fs/f2fs/file.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * fs/f2fs/file.c
   4  *
   5  * Copyright (c) 2012 Samsung Electronics Co., Ltd.
   6  *             http://www.samsung.com/
   7  */
   8 #include <linux/fs.h>
   9 #include <linux/f2fs_fs.h>
  10 #include <linux/stat.h>
  11 #include <linux/buffer_head.h>
  12 #include <linux/writeback.h>
  13 #include <linux/blkdev.h>
  14 #include <linux/falloc.h>
  15 #include <linux/types.h>
  16 #include <linux/compat.h>
  17 #include <linux/uaccess.h>
  18 #include <linux/mount.h>
  19 #include <linux/pagevec.h>
  20 #include <linux/uio.h>
  21 #include <linux/uuid.h>
  22 #include <linux/file.h>
  23 #include <linux/nls.h>
  24 #include <linux/sched/signal.h>
  25 #include <linux/fileattr.h>
  26
  27 #include "f2fs.h"
  28 #include "node.h"
  29 #include "segment.h"
  30 #include "xattr.h"
  31 #include "acl.h"
  32 #include "gc.h"
  33 #include <trace/events/f2fs.h>
  34 #include <uapi/linux/f2fs.h>
  35
  36 static vm_fault_t f2fs_filemap_fault(struct vm_fault *vmf)
  37 {
  38         struct inode *inode = file_inode(vmf->vma->vm_file);
  39         vm_fault_t ret;
  40
  41         down_read(&F2FS_I(inode)->i_mmap_sem);
  42         ret = filemap_fault(vmf);
  43         up_read(&F2FS_I(inode)->i_mmap_sem);
  44
  45         if (!ret)
  46                 f2fs_update_iostat(F2FS_I_SB(inode), APP_MAPPED_READ_IO,
  47                                                         F2FS_BLKSIZE);
  48
  49         trace_f2fs_filemap_fault(inode, vmf->pgoff, (unsigned long)ret);
  50
  51         return ret;
  52 }
  53
  54 static vm_fault_t f2fs_vm_page_mkwrite(struct vm_fault *vmf)
  55 {
  56         struct page *page = vmf->page;
  57         struct inode *inode = file_inode(vmf->vma->vm_file);
  58         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
  59         struct dnode_of_data dn;
  60         bool need_alloc = true;
  61         int err = 0;
  62
  63         if (unlikely(IS_IMMUTABLE(inode)))
  64                 return VM_FAULT_SIGBUS;
  65
  66         if (unlikely(f2fs_cp_error(sbi))) {
  67                 err = -EIO;
  68                 goto err;
  69         }
  70
  71         if (!f2fs_is_checkpoint_ready(sbi)) {
  72                 err = -ENOSPC;
  73                 goto err;
  74         }
  75
  76         err = f2fs_convert_inline_inode(inode);
  77         if (err)
  78                 goto err;
  79
  80 #ifdef CONFIG_F2FS_FS_COMPRESSION
  81         if (f2fs_compressed_file(inode)) {
  82                 int ret = f2fs_is_compressed_cluster(inode, page->index);
  83
  84                 if (ret < 0) {
  85                         err = ret;
  86                         goto err;
  87                 } else if (ret) {
  88                         if (ret < F2FS_I(inode)->i_cluster_size) {
  89                                 err = -EAGAIN;
  90                                 goto err;
  91                         }
  92                         need_alloc = false;
  93                 }
  94         }
  95 #endif
  96         /* should do out of any locked page */
  97         if (need_alloc)
  98                 f2fs_balance_fs(sbi, true);
  99
 100         sb_start_pagefault(inode->i_sb);
 101
 102         f2fs_bug_on(sbi, f2fs_has_inline_data(inode));
 103
 104         file_update_time(vmf->vma->vm_file);
 105         down_read(&F2FS_I(inode)->i_mmap_sem);
 106         lock_page(page);
 107         if (unlikely(page->mapping != inode->i_mapping ||
 108                         page_offset(page) > i_size_read(inode) ||
 109                         !PageUptodate(page))) {
 110                 unlock_page(page);
 111                 err = -EFAULT;
 112                 goto out_sem;
 113         }
 114
 115         if (need_alloc) {
 116                 /* block allocation */
 117                 f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, true);
 118                 set_new_dnode(&dn, inode, NULL, NULL, 0);
 119                 err = f2fs_get_block(&dn, page->index);
 120                 f2fs_put_dnode(&dn);
 121                 f2fs_do_map_lock(sbi, F2FS_GET_BLOCK_PRE_AIO, false);
 122         }
 123
 124 #ifdef CONFIG_F2FS_FS_COMPRESSION
 125         if (!need_alloc) {
 126                 set_new_dnode(&dn, inode, NULL, NULL, 0);
 127                 err = f2fs_get_dnode_of_data(&dn, page->index, LOOKUP_NODE);
 128                 f2fs_put_dnode(&dn);
 129         }
 130 #endif
 131         if (err) {
 132                 unlock_page(page);
 133                 goto out_sem;
 134         }
 135
 136         f2fs_wait_on_page_writeback(page, DATA, false, true);
 137
 138         /* wait for GCed page writeback via META_MAPPING */
 139         f2fs_wait_on_block_writeback(inode, dn.data_blkaddr);
 140
 141         /*
 142          * check to see if the page is mapped already (no holes)
 143          */
 144         if (PageMappedToDisk(page))
 145                 goto out_sem;
 146
 147         /* page is wholly or partially inside EOF */
 148         if (((loff_t)(page->index + 1) << PAGE_SHIFT) >
 149                                                 i_size_read(inode)) {
 150                 loff_t offset;
 151
 152                 offset = i_size_read(inode) & ~PAGE_MASK;
 153                 zero_user_segment(page, offset, PAGE_SIZE);
 154         }
 155         set_page_dirty(page);
 156         if (!PageUptodate(page))
 157                 SetPageUptodate(page);
 158
 159         f2fs_update_iostat(sbi, APP_MAPPED_IO, F2FS_BLKSIZE);
 160         f2fs_update_time(sbi, REQ_TIME);
 161
 162         trace_f2fs_vm_page_mkwrite(page, DATA);
 163 out_sem:
 164         up_read(&F2FS_I(inode)->i_mmap_sem);
 165
 166         sb_end_pagefault(inode->i_sb);
 167 err:
 168         return block_page_mkwrite_return(err);
 169 }
 170
 171 static const struct vm_operations_struct f2fs_file_vm_ops = {
 172         .fault          = f2fs_filemap_fault,
 173         .map_pages      = filemap_map_pages,
 174         .page_mkwrite   = f2fs_vm_page_mkwrite,
 175 };
 176
 177 static int get_parent_ino(struct inode *inode, nid_t *pino)
 178 {
 179         struct dentry *dentry;
 180
 181         /*
 182          * Make sure to get the non-deleted alias.  The alias associated with
 183          * the open file descriptor being fsync()'ed may be deleted already.
 184          */
 185         dentry = d_find_alias(inode);
 186         if (!dentry)
 187                 return 0;
 188
 189         *pino = parent_ino(dentry);
 190         dput(dentry);
 191         return 1;
 192 }
 193
 194 static inline enum cp_reason_type need_do_checkpoint(struct inode *inode)
 195 {
 196         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 197         enum cp_reason_type cp_reason = CP_NO_NEEDED;
 198
 199         if (!S_ISREG(inode->i_mode))
 200                 cp_reason = CP_NON_REGULAR;
 201         else if (f2fs_compressed_file(inode))
 202                 cp_reason = CP_COMPRESSED;
 203         else if (inode->i_nlink != 1)
 204                 cp_reason = CP_HARDLINK;
 205         else if (is_sbi_flag_set(sbi, SBI_NEED_CP))
 206                 cp_reason = CP_SB_NEED_CP;
 207         else if (file_wrong_pino(inode))
 208                 cp_reason = CP_WRONG_PINO;
 209         else if (!f2fs_space_for_roll_forward(sbi))
 210                 cp_reason = CP_NO_SPC_ROLL;
 211         else if (!f2fs_is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
 212                 cp_reason = CP_NODE_NEED_CP;
 213         else if (test_opt(sbi, FASTBOOT))
 214                 cp_reason = CP_FASTBOOT_MODE;
 215         else if (F2FS_OPTION(sbi).active_logs == 2)
 216                 cp_reason = CP_SPEC_LOG_NUM;
 217         else if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT &&
 218                 f2fs_need_dentry_mark(sbi, inode->i_ino) &&
 219                 f2fs_exist_written_data(sbi, F2FS_I(inode)->i_pino,
 220                                                         TRANS_DIR_INO))
 221                 cp_reason = CP_RECOVER_DIR;
 222
 223         return cp_reason;
 224 }
 225
 226 static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
 227 {
 228         struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
 229         bool ret = false;
 230         /* But we need to avoid that there are some inode updates */
 231         if ((i && PageDirty(i)) || f2fs_need_inode_block_update(sbi, ino))
 232                 ret = true;
 233         f2fs_put_page(i, 0);
 234         return ret;
 235 }
 236
 237 static void try_to_fix_pino(struct inode *inode)
 238 {
 239         struct f2fs_inode_info *fi = F2FS_I(inode);
 240         nid_t pino;
 241
 242         down_write(&fi->i_sem);
 243         if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
 244                         get_parent_ino(inode, &pino)) {
 245                 f2fs_i_pino_write(inode, pino);
 246                 file_got_pino(inode);
 247         }
 248         up_write(&fi->i_sem);
 249 }
 250
 251 static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
 252                                                 int datasync, bool atomic)
 253 {
 254         struct inode *inode = file->f_mapping->host;
 255         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 256         nid_t ino = inode->i_ino;
 257         int ret = 0;
 258         enum cp_reason_type cp_reason = 0;
 259         struct writeback_control wbc = {
 260                 .sync_mode = WB_SYNC_ALL,
 261                 .nr_to_write = LONG_MAX,
 262                 .for_reclaim = 0,
 263         };
 264         unsigned int seq_id = 0;
 265
 266         if (unlikely(f2fs_readonly(inode->i_sb) ||
 267                                 is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
 268                 return 0;
 269
 270         trace_f2fs_sync_file_enter(inode);
 271
 272         if (S_ISDIR(inode->i_mode))
 273                 goto go_write;
 274
 275         /* if fdatasync is triggered, let's do in-place-update */
 276         if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
 277                 set_inode_flag(inode, FI_NEED_IPU);
 278         ret = file_write_and_wait_range(file, start, end);
 279         clear_inode_flag(inode, FI_NEED_IPU);
 280
 281         if (ret) {
 282                 trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
 283                 return ret;
 284         }
 285
 286         /* if the inode is dirty, let's recover all the time */
 287         if (!f2fs_skip_inode_update(inode, datasync)) {
 288                 f2fs_write_inode(inode, NULL);
 289                 goto go_write;
 290         }
 291
 292         /*
 293          * if there is no written data, don't waste time to write recovery info.
 294          */
 295         if (!is_inode_flag_set(inode, FI_APPEND_WRITE) &&
 296                         !f2fs_exist_written_data(sbi, ino, APPEND_INO)) {
 297
 298                 /* it may call write_inode just prior to fsync */
 299                 if (need_inode_page_update(sbi, ino))
 300                         goto go_write;
 301
 302                 if (is_inode_flag_set(inode, FI_UPDATE_WRITE) ||
 303                                 f2fs_exist_written_data(sbi, ino, UPDATE_INO))
 304                         goto flush_out;
 305                 goto out;
 306         }
 307 go_write:
 308         /*
 309          * Both of fdatasync() and fsync() are able to be recovered from
 310          * sudden-power-off.
 311          */
 312         down_read(&F2FS_I(inode)->i_sem);
 313         cp_reason = need_do_checkpoint(inode);
 314         up_read(&F2FS_I(inode)->i_sem);
 315
 316         if (cp_reason) {
 317                 /* all the dirty node pages should be flushed for POR */
 318                 ret = f2fs_sync_fs(inode->i_sb, 1);
 319
 320                 /*
 321                  * We've secured consistency through sync_fs. Following pino
 322                  * will be used only for fsynced inodes after checkpoint.
 323                  */
 324                 try_to_fix_pino(inode);
 325                 clear_inode_flag(inode, FI_APPEND_WRITE);
 326                 clear_inode_flag(inode, FI_UPDATE_WRITE);
 327                 goto out;
 328         }
 329 sync_nodes:
 330         atomic_inc(&sbi->wb_sync_req[NODE]);
 331         ret = f2fs_fsync_node_pages(sbi, inode, &wbc, atomic, &seq_id);
 332         atomic_dec(&sbi->wb_sync_req[NODE]);
 333         if (ret)
 334                 goto out;
 335
 336         /* if cp_error was enabled, we should avoid infinite loop */
 337         if (unlikely(f2fs_cp_error(sbi))) {
 338                 ret = -EIO;
 339                 goto out;
 340         }
 341
 342         if (f2fs_need_inode_block_update(sbi, ino)) {
 343                 f2fs_mark_inode_dirty_sync(inode, true);
 344                 f2fs_write_inode(inode, NULL);
 345                 goto sync_nodes;
 346         }
 347
 348         /*
 349          * If it's atomic_write, it's just fine to keep write ordering. So
 350          * here we don't need to wait for node write completion, since we use
 351          * node chain which serializes node blocks. If one of node writes are
 352          * reordered, we can see simply broken chain, resulting in stopping
 353          * roll-forward recovery. It means we'll recover all or none node blocks
 354          * given fsync mark.
 355          */
 356         if (!atomic) {
 357                 ret = f2fs_wait_on_node_pages_writeback(sbi, seq_id);
 358                 if (ret)
 359                         goto out;
 360         }
 361
 362         /* once recovery info is written, don't need to tack this */
 363         f2fs_remove_ino_entry(sbi, ino, APPEND_INO);
 364         clear_inode_flag(inode, FI_APPEND_WRITE);
 365 flush_out:
 366         if (!atomic && F2FS_OPTION(sbi).fsync_mode != FSYNC_MODE_NOBARRIER)
 367                 ret = f2fs_issue_flush(sbi, inode->i_ino);
 368         if (!ret) {
 369                 f2fs_remove_ino_entry(sbi, ino, UPDATE_INO);
 370                 clear_inode_flag(inode, FI_UPDATE_WRITE);
 371                 f2fs_remove_ino_entry(sbi, ino, FLUSH_INO);
 372         }
 373         f2fs_update_time(sbi, REQ_TIME);
 374 out:
 375         trace_f2fs_sync_file_exit(inode, cp_reason, datasync, ret);
 376         return ret;
 377 }
 378
 379 int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
 380 {
 381         if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
 382                 return -EIO;
 383         return f2fs_do_sync_file(file, start, end, datasync, false);
 384 }
 385
 386 static bool __found_offset(struct address_space *mapping, block_t blkaddr,
 387                                 pgoff_t index, int whence)
 388 {
 389         switch (whence) {
 390         case SEEK_DATA:
 391                 if (__is_valid_data_blkaddr(blkaddr))
 392                         return true;
 393                 if (blkaddr == NEW_ADDR &&
 394                     xa_get_mark(&mapping->i_pages, index, PAGECACHE_TAG_DIRTY))
 395                         return true;
 396                 break;
 397         case SEEK_HOLE:
 398                 if (blkaddr == NULL_ADDR)
 399                         return true;
 400                 break;
 401         }
 402         return false;
 403 }
 404
 405 static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
 406 {
 407         struct inode *inode = file->f_mapping->host;
 408         loff_t maxbytes = inode->i_sb->s_maxbytes;
 409         struct dnode_of_data dn;
 410         pgoff_t pgofs, end_offset;
 411         loff_t data_ofs = offset;
 412         loff_t isize;
 413         int err = 0;
 414
 415         inode_lock(inode);
 416
 417         isize = i_size_read(inode);
 418         if (offset >= isize)
 419                 goto fail;
 420
 421         /* handle inline data case */
 422         if (f2fs_has_inline_data(inode)) {
 423                 if (whence == SEEK_HOLE) {
 424                         data_ofs = isize;
 425                         goto found;
 426                 } else if (whence == SEEK_DATA) {
 427                         data_ofs = offset;
 428                         goto found;
 429                 }
 430         }
 431
 432         pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
 433
 434         for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
 435                 set_new_dnode(&dn, inode, NULL, NULL, 0);
 436                 err = f2fs_get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
 437                 if (err && err != -ENOENT) {
 438                         goto fail;
 439                 } else if (err == -ENOENT) {
 440                         /* direct node does not exists */
 441                         if (whence == SEEK_DATA) {
 442                                 pgofs = f2fs_get_next_page_offset(&dn, pgofs);
 443                                 continue;
 444                         } else {
 445                                 goto found;
 446                         }
 447                 }
 448
 449                 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
 450
 451                 /* find data/hole in dnode block */
 452                 for (; dn.ofs_in_node < end_offset;
 453                                 dn.ofs_in_node++, pgofs++,
 454                                 data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
 455                         block_t blkaddr;
 456
 457                         blkaddr = f2fs_data_blkaddr(&dn);
 458
 459                         if (__is_valid_data_blkaddr(blkaddr) &&
 460                                 !f2fs_is_valid_blkaddr(F2FS_I_SB(inode),
 461                                         blkaddr, DATA_GENERIC_ENHANCE)) {
 462                                 f2fs_put_dnode(&dn);
 463                                 goto fail;
 464                         }
 465
 466                         if (__found_offset(file->f_mapping, blkaddr,
 467                                                         pgofs, whence)) {
 468                                 f2fs_put_dnode(&dn);
 469                                 goto found;
 470                         }
 471                 }
 472                 f2fs_put_dnode(&dn);
 473         }
 474
 475         if (whence == SEEK_DATA)
 476                 goto fail;
 477 found:
 478         if (whence == SEEK_HOLE && data_ofs > isize)
 479                 data_ofs = isize;
 480         inode_unlock(inode);
 481         return vfs_setpos(file, data_ofs, maxbytes);
 482 fail:
 483         inode_unlock(inode);
 484         return -ENXIO;
 485 }
 486
 487 static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
 488 {
 489         struct inode *inode = file->f_mapping->host;
 490         loff_t maxbytes = inode->i_sb->s_maxbytes;
 491
 492         if (f2fs_compressed_file(inode))
 493                 maxbytes = max_file_blocks(inode) << F2FS_BLKSIZE_BITS;
 494
 495         switch (whence) {
 496         case SEEK_SET:
 497         case SEEK_CUR:
 498         case SEEK_END:
 499                 return generic_file_llseek_size(file, offset, whence,
 500                                                 maxbytes, i_size_read(inode));
 501         case SEEK_DATA:
 502         case SEEK_HOLE:
 503                 if (offset < 0)
 504                         return -ENXIO;
 505                 return f2fs_seek_block(file, offset, whence);
 506         }
 507
 508         return -EINVAL;
 509 }
 510
 511 static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
 512 {
 513         struct inode *inode = file_inode(file);
 514
 515         if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
 516                 return -EIO;
 517
 518         if (!f2fs_is_compress_backend_ready(inode))
 519                 return -EOPNOTSUPP;
 520
 521         file_accessed(file);
 522         vma->vm_ops = &f2fs_file_vm_ops;
 523         set_inode_flag(inode, FI_MMAP_FILE);
 524         return 0;
 525 }
 526
 527 static int f2fs_file_open(struct inode *inode, struct file *filp)
 528 {
 529         int err = fscrypt_file_open(inode, filp);
 530
 531         if (err)
 532                 return err;
 533
 534         if (!f2fs_is_compress_backend_ready(inode))
 535                 return -EOPNOTSUPP;
 536
 537         err = fsverity_file_open(inode, filp);
 538         if (err)
 539                 return err;
 540
 541         filp->f_mode |= FMODE_NOWAIT;
 542
 543         return dquot_file_open(inode, filp);
 544 }
 545
 546 void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count)
 547 {
 548         struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
 549         struct f2fs_node *raw_node;
 550         int nr_free = 0, ofs = dn->ofs_in_node, len = count;
 551         __le32 *addr;
 552         int base = 0;
 553         bool compressed_cluster = false;
 554         int cluster_index = 0, valid_blocks = 0;
 555         int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
 556         bool released = !atomic_read(&F2FS_I(dn->inode)->i_compr_blocks);
 557
 558         if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode))
 559                 base = get_extra_isize(dn->inode);
 560
 561         raw_node = F2FS_NODE(dn->node_page);
 562         addr = blkaddr_in_node(raw_node) + base + ofs;
 563
 564         /* Assumption: truncateion starts with cluster */
 565         for (; count > 0; count--, addr++, dn->ofs_in_node++, cluster_index++) {
 566                 block_t blkaddr = le32_to_cpu(*addr);
 567
 568                 if (f2fs_compressed_file(dn->inode) &&
 569                                         !(cluster_index & (cluster_size - 1))) {
 570                         if (compressed_cluster)
 571                                 f2fs_i_compr_blocks_update(dn->inode,
 572                                                         valid_blocks, false);
 573                         compressed_cluster = (blkaddr == COMPRESS_ADDR);
 574                         valid_blocks = 0;
 575                 }
 576
 577                 if (blkaddr == NULL_ADDR)
 578                         continue;
 579
 580                 dn->data_blkaddr = NULL_ADDR;
 581                 f2fs_set_data_blkaddr(dn);
 582
 583                 if (__is_valid_data_blkaddr(blkaddr)) {
 584                         if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
 585                                         DATA_GENERIC_ENHANCE))
 586                                 continue;
 587                         if (compressed_cluster)
 588                                 valid_blocks++;
 589                 }
 590
 591                 if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page))
 592                         clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN);
 593
 594                 f2fs_invalidate_blocks(sbi, blkaddr);
 595
 596                 if (!released || blkaddr != COMPRESS_ADDR)
 597                         nr_free++;
 598         }
 599
 600         if (compressed_cluster)
 601                 f2fs_i_compr_blocks_update(dn->inode, valid_blocks, false);
 602
 603         if (nr_free) {
 604                 pgoff_t fofs;
 605                 /*
 606                  * once we invalidate valid blkaddr in range [ofs, ofs + count],
 607                  * we will invalidate all blkaddr in the whole range.
 608                  */
 609                 fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page),
 610                                                         dn->inode) + ofs;
 611                 f2fs_update_extent_cache_range(dn, fofs, 0, len);
 612                 dec_valid_block_count(sbi, dn->inode, nr_free);
 613         }
 614         dn->ofs_in_node = ofs;
 615
 616         f2fs_update_time(sbi, REQ_TIME);
 617         trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
 618                                          dn->ofs_in_node, nr_free);
 619 }
 620
 621 void f2fs_truncate_data_blocks(struct dnode_of_data *dn)
 622 {
 623         f2fs_truncate_data_blocks_range(dn, ADDRS_PER_BLOCK(dn->inode));
 624 }
 625
 626 static int truncate_partial_data_page(struct inode *inode, u64 from,
 627                                                                 bool cache_only)
 628 {
 629         loff_t offset = from & (PAGE_SIZE - 1);
 630         pgoff_t index = from >> PAGE_SHIFT;
 631         struct address_space *mapping = inode->i_mapping;
 632         struct page *page;
 633
 634         if (!offset && !cache_only)
 635                 return 0;
 636
 637         if (cache_only) {
 638                 page = find_lock_page(mapping, index);
 639                 if (page && PageUptodate(page))
 640                         goto truncate_out;
 641                 f2fs_put_page(page, 1);
 642                 return 0;
 643         }
 644
 645         page = f2fs_get_lock_data_page(inode, index, true);
 646         if (IS_ERR(page))
 647                 return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page);
 648 truncate_out:
 649         f2fs_wait_on_page_writeback(page, DATA, true, true);
 650         zero_user(page, offset, PAGE_SIZE - offset);
 651
 652         /* An encrypted inode should have a key and truncate the last page. */
 653         f2fs_bug_on(F2FS_I_SB(inode), cache_only && IS_ENCRYPTED(inode));
 654         if (!cache_only)
 655                 set_page_dirty(page);
 656         f2fs_put_page(page, 1);
 657         return 0;
 658 }
 659
 660 int f2fs_do_truncate_blocks(struct inode *inode, u64 from, bool lock)
 661 {
 662         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 663         struct dnode_of_data dn;
 664         pgoff_t free_from;
 665         int count = 0, err = 0;
 666         struct page *ipage;
 667         bool truncate_page = false;
 668
 669         trace_f2fs_truncate_blocks_enter(inode, from);
 670
 671         free_from = (pgoff_t)F2FS_BLK_ALIGN(from);
 672
 673         if (free_from >= max_file_blocks(inode))
 674                 goto free_partial;
 675
 676         if (lock)
 677                 f2fs_lock_op(sbi);
 678
 679         ipage = f2fs_get_node_page(sbi, inode->i_ino);
 680         if (IS_ERR(ipage)) {
 681                 err = PTR_ERR(ipage);
 682                 goto out;
 683         }
 684
 685         if (f2fs_has_inline_data(inode)) {
 686                 f2fs_truncate_inline_inode(inode, ipage, from);
 687                 f2fs_put_page(ipage, 1);
 688                 truncate_page = true;
 689                 goto out;
 690         }
 691
 692         set_new_dnode(&dn, inode, ipage, NULL, 0);
 693         err = f2fs_get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA);
 694         if (err) {
 695                 if (err == -ENOENT)
 696                         goto free_next;
 697                 goto out;
 698         }
 699
 700         count = ADDRS_PER_PAGE(dn.node_page, inode);
 701
 702         count -= dn.ofs_in_node;
 703         f2fs_bug_on(sbi, count < 0);
 704
 705         if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
 706                 f2fs_truncate_data_blocks_range(&dn, count);
 707                 free_from += count;
 708         }
 709
 710         f2fs_put_dnode(&dn);
 711 free_next:
 712         err = f2fs_truncate_inode_blocks(inode, free_from);
 713 out:
 714         if (lock)
 715                 f2fs_unlock_op(sbi);
 716 free_partial:
 717         /* lastly zero out the first data page */
 718         if (!err)
 719                 err = truncate_partial_data_page(inode, from, truncate_page);
 720
 721         trace_f2fs_truncate_blocks_exit(inode, err);
 722         return err;
 723 }
 724
 725 int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock)
 726 {
 727         u64 free_from = from;
 728         int err;
 729
 730 #ifdef CONFIG_F2FS_FS_COMPRESSION
 731         /*
 732          * for compressed file, only support cluster size
 733          * aligned truncation.
 734          */
 735         if (f2fs_compressed_file(inode))
 736                 free_from = round_up(from,
 737                                 F2FS_I(inode)->i_cluster_size << PAGE_SHIFT);
 738 #endif
 739
 740         err = f2fs_do_truncate_blocks(inode, free_from, lock);
 741         if (err)
 742                 return err;
 743
 744 #ifdef CONFIG_F2FS_FS_COMPRESSION
 745         if (from != free_from) {
 746                 err = f2fs_truncate_partial_cluster(inode, from, lock);
 747                 if (err)
 748                         return err;
 749         }
 750 #endif
 751
 752         return 0;
 753 }
 754
 755 int f2fs_truncate(struct inode *inode)
 756 {
 757         int err;
 758
 759         if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
 760                 return -EIO;
 761
 762         if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
 763                                 S_ISLNK(inode->i_mode)))
 764                 return 0;
 765
 766         trace_f2fs_truncate(inode);
 767
 768         if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) {
 769                 f2fs_show_injection_info(F2FS_I_SB(inode), FAULT_TRUNCATE);
 770                 return -EIO;
 771         }
 772
 773         err = dquot_initialize(inode);
 774         if (err)
 775                 return err;
 776
 777         /* we should check inline_data size */
 778         if (!f2fs_may_inline_data(inode)) {
 779                 err = f2fs_convert_inline_inode(inode);
 780                 if (err)
 781                         return err;
 782         }
 783
 784         err = f2fs_truncate_blocks(inode, i_size_read(inode), true);
 785         if (err)
 786                 return err;
 787
 788         inode->i_mtime = inode->i_ctime = current_time(inode);
 789         f2fs_mark_inode_dirty_sync(inode, false);
 790         return 0;
 791 }
 792
 793 int f2fs_getattr(struct user_namespace *mnt_userns, const struct path *path,
 794                  struct kstat *stat, u32 request_mask, unsigned int query_flags)
 795 {
 796         struct inode *inode = d_inode(path->dentry);
 797         struct f2fs_inode_info *fi = F2FS_I(inode);
 798         struct f2fs_inode *ri;
 799         unsigned int flags;
 800
 801         if (f2fs_has_extra_attr(inode) &&
 802                         f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
 803                         F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
 804                 stat->result_mask |= STATX_BTIME;
 805                 stat->btime.tv_sec = fi->i_crtime.tv_sec;
 806                 stat->btime.tv_nsec = fi->i_crtime.tv_nsec;
 807         }
 808
 809         flags = fi->i_flags;
 810         if (flags & F2FS_COMPR_FL)
 811                 stat->attributes |= STATX_ATTR_COMPRESSED;
 812         if (flags & F2FS_APPEND_FL)
 813                 stat->attributes |= STATX_ATTR_APPEND;
 814         if (IS_ENCRYPTED(inode))
 815                 stat->attributes |= STATX_ATTR_ENCRYPTED;
 816         if (flags & F2FS_IMMUTABLE_FL)
 817                 stat->attributes |= STATX_ATTR_IMMUTABLE;
 818         if (flags & F2FS_NODUMP_FL)
 819                 stat->attributes |= STATX_ATTR_NODUMP;
 820         if (IS_VERITY(inode))
 821                 stat->attributes |= STATX_ATTR_VERITY;
 822
 823         stat->attributes_mask |= (STATX_ATTR_COMPRESSED |
 824                                   STATX_ATTR_APPEND |
 825                                   STATX_ATTR_ENCRYPTED |
 826                                   STATX_ATTR_IMMUTABLE |
 827                                   STATX_ATTR_NODUMP |
 828                                   STATX_ATTR_VERITY);
 829
 830         generic_fillattr(&init_user_ns, inode, stat);
 831
 832         /* we need to show initial sectors used for inline_data/dentries */
 833         if ((S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode)) ||
 834                                         f2fs_has_inline_dentry(inode))
 835                 stat->blocks += (stat->size + 511) >> 9;
 836
 837         return 0;
 838 }
 839
 840 #ifdef CONFIG_F2FS_FS_POSIX_ACL
 841 static void __setattr_copy(struct user_namespace *mnt_userns,
 842                            struct inode *inode, const struct iattr *attr)
 843 {
 844         unsigned int ia_valid = attr->ia_valid;
 845
 846         if (ia_valid & ATTR_UID)
 847                 inode->i_uid = attr->ia_uid;
 848         if (ia_valid & ATTR_GID)
 849                 inode->i_gid = attr->ia_gid;
 850         if (ia_valid & ATTR_ATIME)
 851                 inode->i_atime = attr->ia_atime;
 852         if (ia_valid & ATTR_MTIME)
 853                 inode->i_mtime = attr->ia_mtime;
 854         if (ia_valid & ATTR_CTIME)
 855                 inode->i_ctime = attr->ia_ctime;
 856         if (ia_valid & ATTR_MODE) {
 857                 umode_t mode = attr->ia_mode;
 858                 kgid_t kgid = i_gid_into_mnt(mnt_userns, inode);
 859
 860                 if (!in_group_p(kgid) && !capable_wrt_inode_uidgid(mnt_userns, inode, CAP_FSETID))
 861                         mode &= ~S_ISGID;
 862                 set_acl_inode(inode, mode);
 863         }
 864 }
 865 #else
 866 #define __setattr_copy setattr_copy
 867 #endif
 868
 869 int f2fs_setattr(struct user_namespace *mnt_userns, struct dentry *dentry,
 870                  struct iattr *attr)
 871 {
 872         struct inode *inode = d_inode(dentry);
 873         int err;
 874
 875         if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
 876                 return -EIO;
 877
 878         if (unlikely(IS_IMMUTABLE(inode)))
 879                 return -EPERM;
 880
 881         if (unlikely(IS_APPEND(inode) &&
 882                         (attr->ia_valid & (ATTR_MODE | ATTR_UID |
 883                                   ATTR_GID | ATTR_TIMES_SET))))
 884                 return -EPERM;
 885
 886         if ((attr->ia_valid & ATTR_SIZE) &&
 887                 !f2fs_is_compress_backend_ready(inode))
 888                 return -EOPNOTSUPP;
 889
 890         err = setattr_prepare(&init_user_ns, dentry, attr);
 891         if (err)
 892                 return err;
 893
 894         err = fscrypt_prepare_setattr(dentry, attr);
 895         if (err)
 896                 return err;
 897
 898         err = fsverity_prepare_setattr(dentry, attr);
 899         if (err)
 900                 return err;
 901
 902         if (is_quota_modification(inode, attr)) {
 903                 err = dquot_initialize(inode);
 904                 if (err)
 905                         return err;
 906         }
 907         if ((attr->ia_valid & ATTR_UID &&
 908                 !uid_eq(attr->ia_uid, inode->i_uid)) ||
 909                 (attr->ia_valid & ATTR_GID &&
 910                 !gid_eq(attr->ia_gid, inode->i_gid))) {
 911                 f2fs_lock_op(F2FS_I_SB(inode));
 912                 err = dquot_transfer(inode, attr);
 913                 if (err) {
 914                         set_sbi_flag(F2FS_I_SB(inode),
 915                                         SBI_QUOTA_NEED_REPAIR);
 916                         f2fs_unlock_op(F2FS_I_SB(inode));
 917                         return err;
 918                 }
 919                 /*
 920                  * update uid/gid under lock_op(), so that dquot and inode can
 921                  * be updated atomically.
 922                  */
 923                 if (attr->ia_valid & ATTR_UID)
 924                         inode->i_uid = attr->ia_uid;
 925                 if (attr->ia_valid & ATTR_GID)
 926                         inode->i_gid = attr->ia_gid;
 927                 f2fs_mark_inode_dirty_sync(inode, true);
 928                 f2fs_unlock_op(F2FS_I_SB(inode));
 929         }
 930
 931         if (attr->ia_valid & ATTR_SIZE) {
 932                 loff_t old_size = i_size_read(inode);
 933
 934                 if (attr->ia_size > MAX_INLINE_DATA(inode)) {
 935                         /*
 936                          * should convert inline inode before i_size_write to
 937                          * keep smaller than inline_data size with inline flag.
 938                          */
 939                         err = f2fs_convert_inline_inode(inode);
 940                         if (err)
 941                                 return err;
 942                 }
 943
 944                 down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
 945                 down_write(&F2FS_I(inode)->i_mmap_sem);
 946
 947                 truncate_setsize(inode, attr->ia_size);
 948
 949                 if (attr->ia_size <= old_size)
 950                         err = f2fs_truncate(inode);
 951                 /*
 952                  * do not trim all blocks after i_size if target size is
 953                  * larger than i_size.
 954                  */
 955                 up_write(&F2FS_I(inode)->i_mmap_sem);
 956                 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
 957                 if (err)
 958                         return err;
 959
 960                 spin_lock(&F2FS_I(inode)->i_size_lock);
 961                 inode->i_mtime = inode->i_ctime = current_time(inode);
 962                 F2FS_I(inode)->last_disk_size = i_size_read(inode);
 963                 spin_unlock(&F2FS_I(inode)->i_size_lock);
 964         }
 965
 966         __setattr_copy(&init_user_ns, inode, attr);
 967
 968         if (attr->ia_valid & ATTR_MODE) {
 969                 err = posix_acl_chmod(&init_user_ns, inode, f2fs_get_inode_mode(inode));
 970
 971                 if (is_inode_flag_set(inode, FI_ACL_MODE)) {
 972                         if (!err)
 973                                 inode->i_mode = F2FS_I(inode)->i_acl_mode;
 974                         clear_inode_flag(inode, FI_ACL_MODE);
 975                 }
 976         }
 977
 978         /* file size may changed here */
 979         f2fs_mark_inode_dirty_sync(inode, true);
 980
 981         /* inode change will produce dirty node pages flushed by checkpoint */
 982         f2fs_balance_fs(F2FS_I_SB(inode), true);
 983
 984         return err;
 985 }
 986
 987 const struct inode_operations f2fs_file_inode_operations = {
 988         .getattr        = f2fs_getattr,
 989         .setattr        = f2fs_setattr,
 990         .get_acl        = f2fs_get_acl,
 991         .set_acl        = f2fs_set_acl,
 992         .listxattr      = f2fs_listxattr,
 993         .fiemap         = f2fs_fiemap,
 994         .fileattr_get   = f2fs_fileattr_get,
 995         .fileattr_set   = f2fs_fileattr_set,
 996 };
 997
 998 static int fill_zero(struct inode *inode, pgoff_t index,
 999                                         loff_t start, loff_t len)
1000 {
1001         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1002         struct page *page;
1003
1004         if (!len)
1005                 return 0;
1006
1007         f2fs_balance_fs(sbi, true);
1008
1009         f2fs_lock_op(sbi);
1010         page = f2fs_get_new_data_page(inode, NULL, index, false);
1011         f2fs_unlock_op(sbi);
1012
1013         if (IS_ERR(page))
1014                 return PTR_ERR(page);
1015
1016         f2fs_wait_on_page_writeback(page, DATA, true, true);
1017         zero_user(page, start, len);
1018         set_page_dirty(page);
1019         f2fs_put_page(page, 1);
1020         return 0;
1021 }
1022
1023 int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
1024 {
1025         int err;
1026
1027         while (pg_start < pg_end) {
1028                 struct dnode_of_data dn;
1029                 pgoff_t end_offset, count;
1030
1031                 set_new_dnode(&dn, inode, NULL, NULL, 0);
1032                 err = f2fs_get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
1033                 if (err) {
1034                         if (err == -ENOENT) {
1035                                 pg_start = f2fs_get_next_page_offset(&dn,
1036                                                                 pg_start);
1037                                 continue;
1038                         }
1039                         return err;
1040                 }
1041
1042                 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1043                 count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
1044
1045                 f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
1046
1047                 f2fs_truncate_data_blocks_range(&dn, count);
1048                 f2fs_put_dnode(&dn);
1049
1050                 pg_start += count;
1051         }
1052         return 0;
1053 }
1054
1055 static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
1056 {
1057         pgoff_t pg_start, pg_end;
1058         loff_t off_start, off_end;
1059         int ret;
1060
1061         ret = f2fs_convert_inline_inode(inode);
1062         if (ret)
1063                 return ret;
1064
1065         pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1066         pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
1067
1068         off_start = offset & (PAGE_SIZE - 1);
1069         off_end = (offset + len) & (PAGE_SIZE - 1);
1070
1071         if (pg_start == pg_end) {
1072                 ret = fill_zero(inode, pg_start, off_start,
1073                                                 off_end - off_start);
1074                 if (ret)
1075                         return ret;
1076         } else {
1077                 if (off_start) {
1078                         ret = fill_zero(inode, pg_start++, off_start,
1079                                                 PAGE_SIZE - off_start);
1080                         if (ret)
1081                                 return ret;
1082                 }
1083                 if (off_end) {
1084                         ret = fill_zero(inode, pg_end, 0, off_end);
1085                         if (ret)
1086                                 return ret;
1087                 }
1088
1089                 if (pg_start < pg_end) {
1090                         struct address_space *mapping = inode->i_mapping;
1091                         loff_t blk_start, blk_end;
1092                         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1093
1094                         f2fs_balance_fs(sbi, true);
1095
1096                         blk_start = (loff_t)pg_start << PAGE_SHIFT;
1097                         blk_end = (loff_t)pg_end << PAGE_SHIFT;
1098
1099                         down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1100                         down_write(&F2FS_I(inode)->i_mmap_sem);
1101
1102                         truncate_inode_pages_range(mapping, blk_start,
1103                                         blk_end - 1);
1104
1105                         f2fs_lock_op(sbi);
1106                         ret = f2fs_truncate_hole(inode, pg_start, pg_end);
1107                         f2fs_unlock_op(sbi);
1108
1109                         up_write(&F2FS_I(inode)->i_mmap_sem);
1110                         up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1111                 }
1112         }
1113
1114         return ret;
1115 }
1116
1117 static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr,
1118                                 int *do_replace, pgoff_t off, pgoff_t len)
1119 {
1120         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1121         struct dnode_of_data dn;
1122         int ret, done, i;
1123
1124 next_dnode:
1125         set_new_dnode(&dn, inode, NULL, NULL, 0);
1126         ret = f2fs_get_dnode_of_data(&dn, off, LOOKUP_NODE_RA);
1127         if (ret && ret != -ENOENT) {
1128                 return ret;
1129         } else if (ret == -ENOENT) {
1130                 if (dn.max_level == 0)
1131                         return -ENOENT;
1132                 done = min((pgoff_t)ADDRS_PER_BLOCK(inode) -
1133                                                 dn.ofs_in_node, len);
1134                 blkaddr += done;
1135                 do_replace += done;
1136                 goto next;
1137         }
1138
1139         done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) -
1140                                                         dn.ofs_in_node, len);
1141         for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) {
1142                 *blkaddr = f2fs_data_blkaddr(&dn);
1143
1144                 if (__is_valid_data_blkaddr(*blkaddr) &&
1145                         !f2fs_is_valid_blkaddr(sbi, *blkaddr,
1146                                         DATA_GENERIC_ENHANCE)) {
1147                         f2fs_put_dnode(&dn);
1148                         return -EFSCORRUPTED;
1149                 }
1150
1151                 if (!f2fs_is_checkpointed_data(sbi, *blkaddr)) {
1152
1153                         if (f2fs_lfs_mode(sbi)) {
1154                                 f2fs_put_dnode(&dn);
1155                                 return -EOPNOTSUPP;
1156                         }
1157
1158                         /* do not invalidate this block address */
1159                         f2fs_update_data_blkaddr(&dn, NULL_ADDR);
1160                         *do_replace = 1;
1161                 }
1162         }
1163         f2fs_put_dnode(&dn);
1164 next:
1165         len -= done;
1166         off += done;
1167         if (len)
1168                 goto next_dnode;
1169         return 0;
1170 }
1171
1172 static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr,
1173                                 int *do_replace, pgoff_t off, int len)
1174 {
1175         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1176         struct dnode_of_data dn;
1177         int ret, i;
1178
1179         for (i = 0; i < len; i++, do_replace++, blkaddr++) {
1180                 if (*do_replace == 0)
1181                         continue;
1182
1183                 set_new_dnode(&dn, inode, NULL, NULL, 0);
1184                 ret = f2fs_get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA);
1185                 if (ret) {
1186                         dec_valid_block_count(sbi, inode, 1);
1187                         f2fs_invalidate_blocks(sbi, *blkaddr);
1188                 } else {
1189                         f2fs_update_data_blkaddr(&dn, *blkaddr);
1190                 }
1191                 f2fs_put_dnode(&dn);
1192         }
1193         return 0;
1194 }
1195
1196 static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode,
1197                         block_t *blkaddr, int *do_replace,
1198                         pgoff_t src, pgoff_t dst, pgoff_t len, bool full)
1199 {
1200         struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode);
1201         pgoff_t i = 0;
1202         int ret;
1203
1204         while (i < len) {
1205                 if (blkaddr[i] == NULL_ADDR && !full) {
1206                         i++;
1207                         continue;
1208                 }
1209
1210                 if (do_replace[i] || blkaddr[i] == NULL_ADDR) {
1211                         struct dnode_of_data dn;
1212                         struct node_info ni;
1213                         size_t new_size;
1214                         pgoff_t ilen;
1215
1216                         set_new_dnode(&dn, dst_inode, NULL, NULL, 0);
1217                         ret = f2fs_get_dnode_of_data(&dn, dst + i, ALLOC_NODE);
1218                         if (ret)
1219                                 return ret;
1220
1221                         ret = f2fs_get_node_info(sbi, dn.nid, &ni);
1222                         if (ret) {
1223                                 f2fs_put_dnode(&dn);
1224                                 return ret;
1225                         }
1226
1227                         ilen = min((pgoff_t)
1228                                 ADDRS_PER_PAGE(dn.node_page, dst_inode) -
1229                                                 dn.ofs_in_node, len - i);
1230                         do {
1231                                 dn.data_blkaddr = f2fs_data_blkaddr(&dn);
1232                                 f2fs_truncate_data_blocks_range(&dn, 1);
1233
1234                                 if (do_replace[i]) {
1235                                         f2fs_i_blocks_write(src_inode,
1236                                                         1, false, false);
1237                                         f2fs_i_blocks_write(dst_inode,
1238                                                         1, true, false);
1239                                         f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
1240                                         blkaddr[i], ni.version, true, false);
1241
1242                                         do_replace[i] = 0;
1243                                 }
1244                                 dn.ofs_in_node++;
1245                                 i++;
1246                                 new_size = (loff_t)(dst + i) << PAGE_SHIFT;
1247                                 if (dst_inode->i_size < new_size)
1248                                         f2fs_i_size_write(dst_inode, new_size);
1249                         } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR));
1250
1251                         f2fs_put_dnode(&dn);
1252                 } else {
1253                         struct page *psrc, *pdst;
1254
1255                         psrc = f2fs_get_lock_data_page(src_inode,
1256                                                         src + i, true);
1257                         if (IS_ERR(psrc))
1258                                 return PTR_ERR(psrc);
1259                         pdst = f2fs_get_new_data_page(dst_inode, NULL, dst + i,
1260                                                                 true);
1261                         if (IS_ERR(pdst)) {
1262                                 f2fs_put_page(psrc, 1);
1263                                 return PTR_ERR(pdst);
1264                         }
1265                         f2fs_copy_page(psrc, pdst);
1266                         set_page_dirty(pdst);
1267                         f2fs_put_page(pdst, 1);
1268                         f2fs_put_page(psrc, 1);
1269
1270                         ret = f2fs_truncate_hole(src_inode,
1271                                                 src + i, src + i + 1);
1272                         if (ret)
1273                                 return ret;
1274                         i++;
1275                 }
1276         }
1277         return 0;
1278 }
1279
1280 static int __exchange_data_block(struct inode *src_inode,
1281                         struct inode *dst_inode, pgoff_t src, pgoff_t dst,
1282                         pgoff_t len, bool full)
1283 {
1284         block_t *src_blkaddr;
1285         int *do_replace;
1286         pgoff_t olen;
1287         int ret;
1288
1289         while (len) {
1290                 olen = min((pgoff_t)4 * ADDRS_PER_BLOCK(src_inode), len);
1291
1292                 src_blkaddr = f2fs_kvzalloc(F2FS_I_SB(src_inode),
1293                                         array_size(olen, sizeof(block_t)),
1294                                         GFP_NOFS);
1295                 if (!src_blkaddr)
1296                         return -ENOMEM;
1297
1298                 do_replace = f2fs_kvzalloc(F2FS_I_SB(src_inode),
1299                                         array_size(olen, sizeof(int)),
1300                                         GFP_NOFS);
1301                 if (!do_replace) {
1302                         kvfree(src_blkaddr);
1303                         return -ENOMEM;
1304                 }
1305
1306                 ret = __read_out_blkaddrs(src_inode, src_blkaddr,
1307                                         do_replace, src, olen);
1308                 if (ret)
1309                         goto roll_back;
1310
1311                 ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr,
1312                                         do_replace, src, dst, olen, full);
1313                 if (ret)
1314                         goto roll_back;
1315
1316                 src += olen;
1317                 dst += olen;
1318                 len -= olen;
1319
1320                 kvfree(src_blkaddr);
1321                 kvfree(do_replace);
1322         }
1323         return 0;
1324
1325 roll_back:
1326         __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, olen);
1327         kvfree(src_blkaddr);
1328         kvfree(do_replace);
1329         return ret;
1330 }
1331
1332 static int f2fs_do_collapse(struct inode *inode, loff_t offset, loff_t len)
1333 {
1334         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1335         pgoff_t nrpages = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
1336         pgoff_t start = offset >> PAGE_SHIFT;
1337         pgoff_t end = (offset + len) >> PAGE_SHIFT;
1338         int ret;
1339
1340         f2fs_balance_fs(sbi, true);
1341
1342         /* avoid gc operation during block exchange */
1343         down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1344         down_write(&F2FS_I(inode)->i_mmap_sem);
1345
1346         f2fs_lock_op(sbi);
1347         f2fs_drop_extent_tree(inode);
1348         truncate_pagecache(inode, offset);
1349         ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true);
1350         f2fs_unlock_op(sbi);
1351
1352         up_write(&F2FS_I(inode)->i_mmap_sem);
1353         up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1354         return ret;
1355 }
1356
1357 static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
1358 {
1359         loff_t new_size;
1360         int ret;
1361
1362         if (offset + len >= i_size_read(inode))
1363                 return -EINVAL;
1364
1365         /* collapse range should be aligned to block size of f2fs. */
1366         if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1367                 return -EINVAL;
1368
1369         ret = f2fs_convert_inline_inode(inode);
1370         if (ret)
1371                 return ret;
1372
1373         /* write out all dirty pages from offset */
1374         ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1375         if (ret)
1376                 return ret;
1377
1378         ret = f2fs_do_collapse(inode, offset, len);
1379         if (ret)
1380                 return ret;
1381
1382         /* write out all moved pages, if possible */
1383         down_write(&F2FS_I(inode)->i_mmap_sem);
1384         filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1385         truncate_pagecache(inode, offset);
1386
1387         new_size = i_size_read(inode) - len;
1388         ret = f2fs_truncate_blocks(inode, new_size, true);
1389         up_write(&F2FS_I(inode)->i_mmap_sem);
1390         if (!ret)
1391                 f2fs_i_size_write(inode, new_size);
1392         return ret;
1393 }
1394
1395 static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start,
1396                                                                 pgoff_t end)
1397 {
1398         struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1399         pgoff_t index = start;
1400         unsigned int ofs_in_node = dn->ofs_in_node;
1401         blkcnt_t count = 0;
1402         int ret;
1403
1404         for (; index < end; index++, dn->ofs_in_node++) {
1405                 if (f2fs_data_blkaddr(dn) == NULL_ADDR)
1406                         count++;
1407         }
1408
1409         dn->ofs_in_node = ofs_in_node;
1410         ret = f2fs_reserve_new_blocks(dn, count);
1411         if (ret)
1412                 return ret;
1413
1414         dn->ofs_in_node = ofs_in_node;
1415         for (index = start; index < end; index++, dn->ofs_in_node++) {
1416                 dn->data_blkaddr = f2fs_data_blkaddr(dn);
1417                 /*
1418                  * f2fs_reserve_new_blocks will not guarantee entire block
1419                  * allocation.
1420                  */
1421                 if (dn->data_blkaddr == NULL_ADDR) {
1422                         ret = -ENOSPC;
1423                         break;
1424                 }
1425                 if (dn->data_blkaddr != NEW_ADDR) {
1426                         f2fs_invalidate_blocks(sbi, dn->data_blkaddr);
1427                         dn->data_blkaddr = NEW_ADDR;
1428                         f2fs_set_data_blkaddr(dn);
1429                 }
1430         }
1431
1432         f2fs_update_extent_cache_range(dn, start, 0, index - start);
1433
1434         return ret;
1435 }
1436
1437 static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
1438                                                                 int mode)
1439 {
1440         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1441         struct address_space *mapping = inode->i_mapping;
1442         pgoff_t index, pg_start, pg_end;
1443         loff_t new_size = i_size_read(inode);
1444         loff_t off_start, off_end;
1445         int ret = 0;
1446
1447         ret = inode_newsize_ok(inode, (len + offset));
1448         if (ret)
1449                 return ret;
1450
1451         ret = f2fs_convert_inline_inode(inode);
1452         if (ret)
1453                 return ret;
1454
1455         ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
1456         if (ret)
1457                 return ret;
1458
1459         pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1460         pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
1461
1462         off_start = offset & (PAGE_SIZE - 1);
1463         off_end = (offset + len) & (PAGE_SIZE - 1);
1464
1465         if (pg_start == pg_end) {
1466                 ret = fill_zero(inode, pg_start, off_start,
1467                                                 off_end - off_start);
1468                 if (ret)
1469                         return ret;
1470
1471                 new_size = max_t(loff_t, new_size, offset + len);
1472         } else {
1473                 if (off_start) {
1474                         ret = fill_zero(inode, pg_start++, off_start,
1475                                                 PAGE_SIZE - off_start);
1476                         if (ret)
1477                                 return ret;
1478
1479                         new_size = max_t(loff_t, new_size,
1480                                         (loff_t)pg_start << PAGE_SHIFT);
1481                 }
1482
1483                 for (index = pg_start; index < pg_end;) {
1484                         struct dnode_of_data dn;
1485                         unsigned int end_offset;
1486                         pgoff_t end;
1487
1488                         down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1489                         down_write(&F2FS_I(inode)->i_mmap_sem);
1490
1491                         truncate_pagecache_range(inode,
1492                                 (loff_t)index << PAGE_SHIFT,
1493                                 ((loff_t)pg_end << PAGE_SHIFT) - 1);
1494
1495                         f2fs_lock_op(sbi);
1496
1497                         set_new_dnode(&dn, inode, NULL, NULL, 0);
1498                         ret = f2fs_get_dnode_of_data(&dn, index, ALLOC_NODE);
1499                         if (ret) {
1500                                 f2fs_unlock_op(sbi);
1501                                 up_write(&F2FS_I(inode)->i_mmap_sem);
1502                                 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1503                                 goto out;
1504                         }
1505
1506                         end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1507                         end = min(pg_end, end_offset - dn.ofs_in_node + index);
1508
1509                         ret = f2fs_do_zero_range(&dn, index, end);
1510                         f2fs_put_dnode(&dn);
1511
1512                         f2fs_unlock_op(sbi);
1513                         up_write(&F2FS_I(inode)->i_mmap_sem);
1514                         up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1515
1516                         f2fs_balance_fs(sbi, dn.node_changed);
1517
1518                         if (ret)
1519                                 goto out;
1520
1521                         index = end;
1522                         new_size = max_t(loff_t, new_size,
1523                                         (loff_t)index << PAGE_SHIFT);
1524                 }
1525
1526                 if (off_end) {
1527                         ret = fill_zero(inode, pg_end, 0, off_end);
1528                         if (ret)
1529                                 goto out;
1530
1531                         new_size = max_t(loff_t, new_size, offset + len);
1532                 }
1533         }
1534
1535 out:
1536         if (new_size > i_size_read(inode)) {
1537                 if (mode & FALLOC_FL_KEEP_SIZE)
1538                         file_set_keep_isize(inode);
1539                 else
1540                         f2fs_i_size_write(inode, new_size);
1541         }
1542         return ret;
1543 }
1544
1545 static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
1546 {
1547         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1548         pgoff_t nr, pg_start, pg_end, delta, idx;
1549         loff_t new_size;
1550         int ret = 0;
1551
1552         new_size = i_size_read(inode) + len;
1553         ret = inode_newsize_ok(inode, new_size);
1554         if (ret)
1555                 return ret;
1556
1557         if (offset >= i_size_read(inode))
1558                 return -EINVAL;
1559
1560         /* insert range should be aligned to block size of f2fs. */
1561         if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1562                 return -EINVAL;
1563
1564         ret = f2fs_convert_inline_inode(inode);
1565         if (ret)
1566                 return ret;
1567
1568         f2fs_balance_fs(sbi, true);
1569
1570         down_write(&F2FS_I(inode)->i_mmap_sem);
1571         ret = f2fs_truncate_blocks(inode, i_size_read(inode), true);
1572         up_write(&F2FS_I(inode)->i_mmap_sem);
1573         if (ret)
1574                 return ret;
1575
1576         /* write out all dirty pages from offset */
1577         ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1578         if (ret)
1579                 return ret;
1580
1581         pg_start = offset >> PAGE_SHIFT;
1582         pg_end = (offset + len) >> PAGE_SHIFT;
1583         delta = pg_end - pg_start;
1584         idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
1585
1586         /* avoid gc operation during block exchange */
1587         down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1588         down_write(&F2FS_I(inode)->i_mmap_sem);
1589         truncate_pagecache(inode, offset);
1590
1591         while (!ret && idx > pg_start) {
1592                 nr = idx - pg_start;
1593                 if (nr > delta)
1594                         nr = delta;
1595                 idx -= nr;
1596
1597                 f2fs_lock_op(sbi);
1598                 f2fs_drop_extent_tree(inode);
1599
1600                 ret = __exchange_data_block(inode, inode, idx,
1601                                         idx + delta, nr, false);
1602                 f2fs_unlock_op(sbi);
1603         }
1604         up_write(&F2FS_I(inode)->i_mmap_sem);
1605         up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
1606
1607         /* write out all moved pages, if possible */
1608         down_write(&F2FS_I(inode)->i_mmap_sem);
1609         filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1610         truncate_pagecache(inode, offset);
1611         up_write(&F2FS_I(inode)->i_mmap_sem);
1612
1613         if (!ret)
1614                 f2fs_i_size_write(inode, new_size);
1615         return ret;
1616 }
1617
1618 static int expand_inode_data(struct inode *inode, loff_t offset,
1619                                         loff_t len, int mode)
1620 {
1621         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1622         struct f2fs_map_blocks map = { .m_next_pgofs = NULL,
1623                         .m_next_extent = NULL, .m_seg_type = NO_CHECK_TYPE,
1624                         .m_may_create = true };
1625         pgoff_t pg_end;
1626         loff_t new_size = i_size_read(inode);
1627         loff_t off_end;
1628         int err;
1629
1630         err = inode_newsize_ok(inode, (len + offset));
1631         if (err)
1632                 return err;
1633
1634         err = f2fs_convert_inline_inode(inode);
1635         if (err)
1636                 return err;
1637
1638         f2fs_balance_fs(sbi, true);
1639
1640         pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT;
1641         off_end = (offset + len) & (PAGE_SIZE - 1);
1642
1643         map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT;
1644         map.m_len = pg_end - map.m_lblk;
1645         if (off_end)
1646                 map.m_len++;
1647
1648         if (!map.m_len)
1649                 return 0;
1650
1651         if (f2fs_is_pinned_file(inode)) {
1652                 block_t len = (map.m_len >> sbi->log_blocks_per_seg) <<
1653                                         sbi->log_blocks_per_seg;
1654                 block_t done = 0;
1655
1656                 if (map.m_len % sbi->blocks_per_seg)
1657                         len += sbi->blocks_per_seg;
1658
1659                 map.m_len = sbi->blocks_per_seg;
1660 next_alloc:
1661                 if (has_not_enough_free_secs(sbi, 0,
1662                         GET_SEC_FROM_SEG(sbi, overprovision_segments(sbi)))) {
1663                         down_write(&sbi->gc_lock);
1664                         err = f2fs_gc(sbi, true, false, NULL_SEGNO);
1665                         if (err && err != -ENODATA && err != -EAGAIN)
1666                                 goto out_err;
1667                 }
1668
1669                 down_write(&sbi->pin_sem);
1670
1671                 f2fs_lock_op(sbi);
1672                 f2fs_allocate_new_segment(sbi, CURSEG_COLD_DATA_PINNED);
1673                 f2fs_unlock_op(sbi);
1674
1675                 map.m_seg_type = CURSEG_COLD_DATA_PINNED;
1676                 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_DIO);
1677
1678                 up_write(&sbi->pin_sem);
1679
1680                 done += map.m_len;
1681                 len -= map.m_len;
1682                 map.m_lblk += map.m_len;
1683                 if (!err && len)
1684                         goto next_alloc;
1685
1686                 map.m_len = done;
1687         } else {
1688                 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
1689         }
1690 out_err:
1691         if (err) {
1692                 pgoff_t last_off;
1693
1694                 if (!map.m_len)
1695                         return err;
1696
1697                 last_off = map.m_lblk + map.m_len - 1;
1698
1699                 /* update new size to the failed position */
1700                 new_size = (last_off == pg_end) ? offset + len :
1701                                         (loff_t)(last_off + 1) << PAGE_SHIFT;
1702         } else {
1703                 new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end;
1704         }
1705
1706         if (new_size > i_size_read(inode)) {
1707                 if (mode & FALLOC_FL_KEEP_SIZE)
1708                         file_set_keep_isize(inode);
1709                 else
1710                         f2fs_i_size_write(inode, new_size);
1711         }
1712
1713         return err;
1714 }
1715
1716 static long f2fs_fallocate(struct file *file, int mode,
1717                                 loff_t offset, loff_t len)
1718 {
1719         struct inode *inode = file_inode(file);
1720         long ret = 0;
1721
1722         if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
1723                 return -EIO;
1724         if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode)))
1725                 return -ENOSPC;
1726         if (!f2fs_is_compress_backend_ready(inode))
1727                 return -EOPNOTSUPP;
1728
1729         /* f2fs only support ->fallocate for regular file */
1730         if (!S_ISREG(inode->i_mode))
1731                 return -EINVAL;
1732
1733         if (IS_ENCRYPTED(inode) &&
1734                 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
1735                 return -EOPNOTSUPP;
1736
1737         if (f2fs_compressed_file(inode) &&
1738                 (mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_COLLAPSE_RANGE |
1739                         FALLOC_FL_ZERO_RANGE | FALLOC_FL_INSERT_RANGE)))
1740                 return -EOPNOTSUPP;
1741
1742         if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
1743                         FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
1744                         FALLOC_FL_INSERT_RANGE))
1745                 return -EOPNOTSUPP;
1746
1747         inode_lock(inode);
1748
1749         if (mode & FALLOC_FL_PUNCH_HOLE) {
1750                 if (offset >= inode->i_size)
1751                         goto out;
1752
1753                 ret = punch_hole(inode, offset, len);
1754         } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
1755                 ret = f2fs_collapse_range(inode, offset, len);
1756         } else if (mode & FALLOC_FL_ZERO_RANGE) {
1757                 ret = f2fs_zero_range(inode, offset, len, mode);
1758         } else if (mode & FALLOC_FL_INSERT_RANGE) {
1759                 ret = f2fs_insert_range(inode, offset, len);
1760         } else {
1761                 ret = expand_inode_data(inode, offset, len, mode);
1762         }
1763
1764         if (!ret) {
1765                 inode->i_mtime = inode->i_ctime = current_time(inode);
1766                 f2fs_mark_inode_dirty_sync(inode, false);
1767                 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1768         }
1769
1770 out:
1771         inode_unlock(inode);
1772
1773         trace_f2fs_fallocate(inode, mode, offset, len, ret);
1774         return ret;
1775 }
1776
1777 static int f2fs_release_file(struct inode *inode, struct file *filp)
1778 {
1779         /*
1780          * f2fs_relase_file is called at every close calls. So we should
1781          * not drop any inmemory pages by close called by other process.
1782          */
1783         if (!(filp->f_mode & FMODE_WRITE) ||
1784                         atomic_read(&inode->i_writecount) != 1)
1785                 return 0;
1786
1787         /* some remained atomic pages should discarded */
1788         if (f2fs_is_atomic_file(inode))
1789                 f2fs_drop_inmem_pages(inode);
1790         if (f2fs_is_volatile_file(inode)) {
1791                 set_inode_flag(inode, FI_DROP_CACHE);
1792                 filemap_fdatawrite(inode->i_mapping);
1793                 clear_inode_flag(inode, FI_DROP_CACHE);
1794                 clear_inode_flag(inode, FI_VOLATILE_FILE);
1795                 stat_dec_volatile_write(inode);
1796         }
1797         return 0;
1798 }
1799
1800 static int f2fs_file_flush(struct file *file, fl_owner_t id)
1801 {
1802         struct inode *inode = file_inode(file);
1803
1804         /*
1805          * If the process doing a transaction is crashed, we should do
1806          * roll-back. Otherwise, other reader/write can see corrupted database
1807          * until all the writers close its file. Since this should be done
1808          * before dropping file lock, it needs to do in ->flush.
1809          */
1810         if (f2fs_is_atomic_file(inode) &&
1811                         F2FS_I(inode)->inmem_task == current)
1812                 f2fs_drop_inmem_pages(inode);
1813         return 0;
1814 }
1815
1816 static int f2fs_setflags_common(struct inode *inode, u32 iflags, u32 mask)
1817 {
1818         struct f2fs_inode_info *fi = F2FS_I(inode);
1819         u32 masked_flags = fi->i_flags & mask;
1820
1821         f2fs_bug_on(F2FS_I_SB(inode), (iflags & ~mask));
1822
1823         /* Is it quota file? Do not allow user to mess with it */
1824         if (IS_NOQUOTA(inode))
1825                 return -EPERM;
1826
1827         if ((iflags ^ masked_flags) & F2FS_CASEFOLD_FL) {
1828                 if (!f2fs_sb_has_casefold(F2FS_I_SB(inode)))
1829                         return -EOPNOTSUPP;
1830                 if (!f2fs_empty_dir(inode))
1831                         return -ENOTEMPTY;
1832         }
1833
1834         if (iflags & (F2FS_COMPR_FL | F2FS_NOCOMP_FL)) {
1835                 if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
1836                         return -EOPNOTSUPP;
1837                 if ((iflags & F2FS_COMPR_FL) && (iflags & F2FS_NOCOMP_FL))
1838                         return -EINVAL;
1839         }
1840
1841         if ((iflags ^ masked_flags) & F2FS_COMPR_FL) {
1842                 if (masked_flags & F2FS_COMPR_FL) {
1843                         if (!f2fs_disable_compressed_file(inode))
1844                                 return -EINVAL;
1845                 }
1846                 if (iflags & F2FS_NOCOMP_FL)
1847                         return -EINVAL;
1848                 if (iflags & F2FS_COMPR_FL) {
1849                         if (!f2fs_may_compress(inode))
1850                                 return -EINVAL;
1851                         if (S_ISREG(inode->i_mode) && inode->i_size)
1852                                 return -EINVAL;
1853
1854                         set_compress_context(inode);
1855                 }
1856         }
1857         if ((iflags ^ masked_flags) & F2FS_NOCOMP_FL) {
1858                 if (masked_flags & F2FS_COMPR_FL)
1859                         return -EINVAL;
1860         }
1861
1862         fi->i_flags = iflags | (fi->i_flags & ~mask);
1863         f2fs_bug_on(F2FS_I_SB(inode), (fi->i_flags & F2FS_COMPR_FL) &&
1864                                         (fi->i_flags & F2FS_NOCOMP_FL));
1865
1866         if (fi->i_flags & F2FS_PROJINHERIT_FL)
1867                 set_inode_flag(inode, FI_PROJ_INHERIT);
1868         else
1869                 clear_inode_flag(inode, FI_PROJ_INHERIT);
1870
1871         inode->i_ctime = current_time(inode);
1872         f2fs_set_inode_flags(inode);
1873         f2fs_mark_inode_dirty_sync(inode, true);
1874         return 0;
1875 }
1876
1877 /* FS_IOC_[GS]ETFLAGS and FS_IOC_FS[GS]ETXATTR support */
1878
1879 /*
1880  * To make a new on-disk f2fs i_flag gettable via FS_IOC_GETFLAGS, add an entry
1881  * for it to f2fs_fsflags_map[], and add its FS_*_FL equivalent to
1882  * F2FS_GETTABLE_FS_FL.  To also make it settable via FS_IOC_SETFLAGS, also add
1883  * its FS_*_FL equivalent to F2FS_SETTABLE_FS_FL.
1884  *
1885  * Translating flags to fsx_flags value used by FS_IOC_FSGETXATTR and
1886  * FS_IOC_FSSETXATTR is done by the VFS.
1887  */
1888
1889 static const struct {
1890         u32 iflag;
1891         u32 fsflag;
1892 } f2fs_fsflags_map[] = {
1893         { F2FS_COMPR_FL,        FS_COMPR_FL },
1894         { F2FS_SYNC_FL,         FS_SYNC_FL },
1895         { F2FS_IMMUTABLE_FL,    FS_IMMUTABLE_FL },
1896         { F2FS_APPEND_FL,       FS_APPEND_FL },
1897         { F2FS_NODUMP_FL,       FS_NODUMP_FL },
1898         { F2FS_NOATIME_FL,      FS_NOATIME_FL },
1899         { F2FS_NOCOMP_FL,       FS_NOCOMP_FL },
1900         { F2FS_INDEX_FL,        FS_INDEX_FL },
1901         { F2FS_DIRSYNC_FL,      FS_DIRSYNC_FL },
1902         { F2FS_PROJINHERIT_FL,  FS_PROJINHERIT_FL },
1903         { F2FS_CASEFOLD_FL,     FS_CASEFOLD_FL },
1904 };
1905
1906 #define F2FS_GETTABLE_FS_FL (           \
1907                 FS_COMPR_FL |           \
1908                 FS_SYNC_FL |            \
1909                 FS_IMMUTABLE_FL |       \
1910                 FS_APPEND_FL |          \
1911                 FS_NODUMP_FL |          \
1912                 FS_NOATIME_FL |         \
1913                 FS_NOCOMP_FL |          \
1914                 FS_INDEX_FL |           \
1915                 FS_DIRSYNC_FL |         \
1916                 FS_PROJINHERIT_FL |     \
1917                 FS_ENCRYPT_FL |         \
1918                 FS_INLINE_DATA_FL |     \
1919                 FS_NOCOW_FL |           \
1920                 FS_VERITY_FL |          \
1921                 FS_CASEFOLD_FL)
1922
1923 #define F2FS_SETTABLE_FS_FL (           \
1924                 FS_COMPR_FL |           \
1925                 FS_SYNC_FL |            \
1926                 FS_IMMUTABLE_FL |       \
1927                 FS_APPEND_FL |          \
1928                 FS_NODUMP_FL |          \
1929                 FS_NOATIME_FL |         \
1930                 FS_NOCOMP_FL |          \
1931                 FS_DIRSYNC_FL |         \
1932                 FS_PROJINHERIT_FL |     \
1933                 FS_CASEFOLD_FL)
1934
1935 /* Convert f2fs on-disk i_flags to FS_IOC_{GET,SET}FLAGS flags */
1936 static inline u32 f2fs_iflags_to_fsflags(u32 iflags)
1937 {
1938         u32 fsflags = 0;
1939         int i;
1940
1941         for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1942                 if (iflags & f2fs_fsflags_map[i].iflag)
1943                         fsflags |= f2fs_fsflags_map[i].fsflag;
1944
1945         return fsflags;
1946 }
1947
1948 /* Convert FS_IOC_{GET,SET}FLAGS flags to f2fs on-disk i_flags */
1949 static inline u32 f2fs_fsflags_to_iflags(u32 fsflags)
1950 {
1951         u32 iflags = 0;
1952         int i;
1953
1954         for (i = 0; i < ARRAY_SIZE(f2fs_fsflags_map); i++)
1955                 if (fsflags & f2fs_fsflags_map[i].fsflag)
1956                         iflags |= f2fs_fsflags_map[i].iflag;
1957
1958         return iflags;
1959 }
1960
1961 static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
1962 {
1963         struct inode *inode = file_inode(filp);
1964
1965         return put_user(inode->i_generation, (int __user *)arg);
1966 }
1967
1968 static int f2fs_ioc_start_atomic_write(struct file *filp)
1969 {
1970         struct inode *inode = file_inode(filp);
1971         struct f2fs_inode_info *fi = F2FS_I(inode);
1972         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1973         int ret;
1974
1975         if (!inode_owner_or_capable(&init_user_ns, inode))
1976                 return -EACCES;
1977
1978         if (!S_ISREG(inode->i_mode))
1979                 return -EINVAL;
1980
1981         if (filp->f_flags & O_DIRECT)
1982                 return -EINVAL;
1983
1984         ret = mnt_want_write_file(filp);
1985         if (ret)
1986                 return ret;
1987
1988         inode_lock(inode);
1989
1990         f2fs_disable_compressed_file(inode);
1991
1992         if (f2fs_is_atomic_file(inode)) {
1993                 if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST))
1994                         ret = -EINVAL;
1995                 goto out;
1996         }
1997
1998         ret = f2fs_convert_inline_inode(inode);
1999         if (ret)
2000                 goto out;
2001
2002         down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
2003
2004         /*
2005          * Should wait end_io to count F2FS_WB_CP_DATA correctly by
2006          * f2fs_is_atomic_file.
2007          */
2008         if (get_dirty_pages(inode))
2009                 f2fs_warn(F2FS_I_SB(inode), "Unexpected flush for atomic writes: ino=%lu, npages=%u",
2010                           inode->i_ino, get_dirty_pages(inode));
2011         ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
2012         if (ret) {
2013                 up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
2014                 goto out;
2015         }
2016
2017         spin_lock(&sbi->inode_lock[ATOMIC_FILE]);
2018         if (list_empty(&fi->inmem_ilist))
2019                 list_add_tail(&fi->inmem_ilist, &sbi->inode_list[ATOMIC_FILE]);
2020         sbi->atomic_files++;
2021         spin_unlock(&sbi->inode_lock[ATOMIC_FILE]);
2022
2023         /* add inode in inmem_list first and set atomic_file */
2024         set_inode_flag(inode, FI_ATOMIC_FILE);
2025         clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2026         up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
2027
2028         f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2029         F2FS_I(inode)->inmem_task = current;
2030         stat_update_max_atomic_write(inode);
2031 out:
2032         inode_unlock(inode);
2033         mnt_drop_write_file(filp);
2034         return ret;
2035 }
2036
2037 static int f2fs_ioc_commit_atomic_write(struct file *filp)
2038 {
2039         struct inode *inode = file_inode(filp);
2040         int ret;
2041
2042         if (!inode_owner_or_capable(&init_user_ns, inode))
2043                 return -EACCES;
2044
2045         ret = mnt_want_write_file(filp);
2046         if (ret)
2047                 return ret;
2048
2049         f2fs_balance_fs(F2FS_I_SB(inode), true);
2050
2051         inode_lock(inode);
2052
2053         if (f2fs_is_volatile_file(inode)) {
2054                 ret = -EINVAL;
2055                 goto err_out;
2056         }
2057
2058         if (f2fs_is_atomic_file(inode)) {
2059                 ret = f2fs_commit_inmem_pages(inode);
2060                 if (ret)
2061                         goto err_out;
2062
2063                 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
2064                 if (!ret)
2065                         f2fs_drop_inmem_pages(inode);
2066         } else {
2067                 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 1, false);
2068         }
2069 err_out:
2070         if (is_inode_flag_set(inode, FI_ATOMIC_REVOKE_REQUEST)) {
2071                 clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2072                 ret = -EINVAL;
2073         }
2074         inode_unlock(inode);
2075         mnt_drop_write_file(filp);
2076         return ret;
2077 }
2078
2079 static int f2fs_ioc_start_volatile_write(struct file *filp)
2080 {
2081         struct inode *inode = file_inode(filp);
2082         int ret;
2083
2084         if (!inode_owner_or_capable(&init_user_ns, inode))
2085                 return -EACCES;
2086
2087         if (!S_ISREG(inode->i_mode))
2088                 return -EINVAL;
2089
2090         ret = mnt_want_write_file(filp);
2091         if (ret)
2092                 return ret;
2093
2094         inode_lock(inode);
2095
2096         if (f2fs_is_volatile_file(inode))
2097                 goto out;
2098
2099         ret = f2fs_convert_inline_inode(inode);
2100         if (ret)
2101                 goto out;
2102
2103         stat_inc_volatile_write(inode);
2104         stat_update_max_volatile_write(inode);
2105
2106         set_inode_flag(inode, FI_VOLATILE_FILE);
2107         f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2108 out:
2109         inode_unlock(inode);
2110         mnt_drop_write_file(filp);
2111         return ret;
2112 }
2113
2114 static int f2fs_ioc_release_volatile_write(struct file *filp)
2115 {
2116         struct inode *inode = file_inode(filp);
2117         int ret;
2118
2119         if (!inode_owner_or_capable(&init_user_ns, inode))
2120                 return -EACCES;
2121
2122         ret = mnt_want_write_file(filp);
2123         if (ret)
2124                 return ret;
2125
2126         inode_lock(inode);
2127
2128         if (!f2fs_is_volatile_file(inode))
2129                 goto out;
2130
2131         if (!f2fs_is_first_block_written(inode)) {
2132                 ret = truncate_partial_data_page(inode, 0, true);
2133                 goto out;
2134         }
2135
2136         ret = punch_hole(inode, 0, F2FS_BLKSIZE);
2137 out:
2138         inode_unlock(inode);
2139         mnt_drop_write_file(filp);
2140         return ret;
2141 }
2142
2143 static int f2fs_ioc_abort_volatile_write(struct file *filp)
2144 {
2145         struct inode *inode = file_inode(filp);
2146         int ret;
2147
2148         if (!inode_owner_or_capable(&init_user_ns, inode))
2149                 return -EACCES;
2150
2151         ret = mnt_want_write_file(filp);
2152         if (ret)
2153                 return ret;
2154
2155         inode_lock(inode);
2156
2157         if (f2fs_is_atomic_file(inode))
2158                 f2fs_drop_inmem_pages(inode);
2159         if (f2fs_is_volatile_file(inode)) {
2160                 clear_inode_flag(inode, FI_VOLATILE_FILE);
2161                 stat_dec_volatile_write(inode);
2162                 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
2163         }
2164
2165         clear_inode_flag(inode, FI_ATOMIC_REVOKE_REQUEST);
2166
2167         inode_unlock(inode);
2168
2169         mnt_drop_write_file(filp);
2170         f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2171         return ret;
2172 }
2173
2174 static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
2175 {
2176         struct inode *inode = file_inode(filp);
2177         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2178         struct super_block *sb = sbi->sb;
2179         __u32 in;
2180         int ret = 0;
2181
2182         if (!capable(CAP_SYS_ADMIN))
2183                 return -EPERM;
2184
2185         if (get_user(in, (__u32 __user *)arg))
2186                 return -EFAULT;
2187
2188         if (in != F2FS_GOING_DOWN_FULLSYNC) {
2189                 ret = mnt_want_write_file(filp);
2190                 if (ret) {
2191                         if (ret == -EROFS) {
2192                                 ret = 0;
2193                                 f2fs_stop_checkpoint(sbi, false);
2194                                 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2195                                 trace_f2fs_shutdown(sbi, in, ret);
2196                         }
2197                         return ret;
2198                 }
2199         }
2200
2201         switch (in) {
2202         case F2FS_GOING_DOWN_FULLSYNC:
2203                 ret = freeze_bdev(sb->s_bdev);
2204                 if (ret)
2205                         goto out;
2206                 f2fs_stop_checkpoint(sbi, false);
2207                 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2208                 thaw_bdev(sb->s_bdev);
2209                 break;
2210         case F2FS_GOING_DOWN_METASYNC:
2211                 /* do checkpoint only */
2212                 ret = f2fs_sync_fs(sb, 1);
2213                 if (ret)
2214                         goto out;
2215                 f2fs_stop_checkpoint(sbi, false);
2216                 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2217                 break;
2218         case F2FS_GOING_DOWN_NOSYNC:
2219                 f2fs_stop_checkpoint(sbi, false);
2220                 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2221                 break;
2222         case F2FS_GOING_DOWN_METAFLUSH:
2223                 f2fs_sync_meta_pages(sbi, META, LONG_MAX, FS_META_IO);
2224                 f2fs_stop_checkpoint(sbi, false);
2225                 set_sbi_flag(sbi, SBI_IS_SHUTDOWN);
2226                 break;
2227         case F2FS_GOING_DOWN_NEED_FSCK:
2228                 set_sbi_flag(sbi, SBI_NEED_FSCK);
2229                 set_sbi_flag(sbi, SBI_CP_DISABLED_QUICK);
2230                 set_sbi_flag(sbi, SBI_IS_DIRTY);
2231                 /* do checkpoint only */
2232                 ret = f2fs_sync_fs(sb, 1);
2233                 goto out;
2234         default:
2235                 ret = -EINVAL;
2236                 goto out;
2237         }
2238
2239         f2fs_stop_gc_thread(sbi);
2240         f2fs_stop_discard_thread(sbi);
2241
2242         f2fs_drop_discard_cmd(sbi);
2243         clear_opt(sbi, DISCARD);
2244
2245         f2fs_update_time(sbi, REQ_TIME);
2246 out:
2247         if (in != F2FS_GOING_DOWN_FULLSYNC)
2248                 mnt_drop_write_file(filp);
2249
2250         trace_f2fs_shutdown(sbi, in, ret);
2251
2252         return ret;
2253 }
2254
2255 static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
2256 {
2257         struct inode *inode = file_inode(filp);
2258         struct super_block *sb = inode->i_sb;
2259         struct request_queue *q = bdev_get_queue(sb->s_bdev);
2260         struct fstrim_range range;
2261         int ret;
2262
2263         if (!capable(CAP_SYS_ADMIN))
2264                 return -EPERM;
2265
2266         if (!f2fs_hw_support_discard(F2FS_SB(sb)))
2267                 return -EOPNOTSUPP;
2268
2269         if (copy_from_user(&range, (struct fstrim_range __user *)arg,
2270                                 sizeof(range)))
2271                 return -EFAULT;
2272
2273         ret = mnt_want_write_file(filp);
2274         if (ret)
2275                 return ret;
2276
2277         range.minlen = max((unsigned int)range.minlen,
2278                                 q->limits.discard_granularity);
2279         ret = f2fs_trim_fs(F2FS_SB(sb), &range);
2280         mnt_drop_write_file(filp);
2281         if (ret < 0)
2282                 return ret;
2283
2284         if (copy_to_user((struct fstrim_range __user *)arg, &range,
2285                                 sizeof(range)))
2286                 return -EFAULT;
2287         f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2288         return 0;
2289 }
2290
2291 static bool uuid_is_nonzero(__u8 u[16])
2292 {
2293         int i;
2294
2295         for (i = 0; i < 16; i++)
2296                 if (u[i])
2297                         return true;
2298         return false;
2299 }
2300
2301 static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
2302 {
2303         struct inode *inode = file_inode(filp);
2304
2305         if (!f2fs_sb_has_encrypt(F2FS_I_SB(inode)))
2306                 return -EOPNOTSUPP;
2307
2308         f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
2309
2310         return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
2311 }
2312
2313 static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
2314 {
2315         if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2316                 return -EOPNOTSUPP;
2317         return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
2318 }
2319
2320 static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
2321 {
2322         struct inode *inode = file_inode(filp);
2323         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2324         int err;
2325
2326         if (!f2fs_sb_has_encrypt(sbi))
2327                 return -EOPNOTSUPP;
2328
2329         err = mnt_want_write_file(filp);
2330         if (err)
2331                 return err;
2332
2333         down_write(&sbi->sb_lock);
2334
2335         if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
2336                 goto got_it;
2337
2338         /* update superblock with uuid */
2339         generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
2340
2341         err = f2fs_commit_super(sbi, false);
2342         if (err) {
2343                 /* undo new data */
2344                 memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
2345                 goto out_err;
2346         }
2347 got_it:
2348         if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt,
2349                                                                         16))
2350                 err = -EFAULT;
2351 out_err:
2352         up_write(&sbi->sb_lock);
2353         mnt_drop_write_file(filp);
2354         return err;
2355 }
2356
2357 static int f2fs_ioc_get_encryption_policy_ex(struct file *filp,
2358                                              unsigned long arg)
2359 {
2360         if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2361                 return -EOPNOTSUPP;
2362
2363         return fscrypt_ioctl_get_policy_ex(filp, (void __user *)arg);
2364 }
2365
2366 static int f2fs_ioc_add_encryption_key(struct file *filp, unsigned long arg)
2367 {
2368         if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2369                 return -EOPNOTSUPP;
2370
2371         return fscrypt_ioctl_add_key(filp, (void __user *)arg);
2372 }
2373
2374 static int f2fs_ioc_remove_encryption_key(struct file *filp, unsigned long arg)
2375 {
2376         if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2377                 return -EOPNOTSUPP;
2378
2379         return fscrypt_ioctl_remove_key(filp, (void __user *)arg);
2380 }
2381
2382 static int f2fs_ioc_remove_encryption_key_all_users(struct file *filp,
2383                                                     unsigned long arg)
2384 {
2385         if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2386                 return -EOPNOTSUPP;
2387
2388         return fscrypt_ioctl_remove_key_all_users(filp, (void __user *)arg);
2389 }
2390
2391 static int f2fs_ioc_get_encryption_key_status(struct file *filp,
2392                                               unsigned long arg)
2393 {
2394         if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2395                 return -EOPNOTSUPP;
2396
2397         return fscrypt_ioctl_get_key_status(filp, (void __user *)arg);
2398 }
2399
2400 static int f2fs_ioc_get_encryption_nonce(struct file *filp, unsigned long arg)
2401 {
2402         if (!f2fs_sb_has_encrypt(F2FS_I_SB(file_inode(filp))))
2403                 return -EOPNOTSUPP;
2404
2405         return fscrypt_ioctl_get_nonce(filp, (void __user *)arg);
2406 }
2407
2408 static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
2409 {
2410         struct inode *inode = file_inode(filp);
2411         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2412         __u32 sync;
2413         int ret;
2414
2415         if (!capable(CAP_SYS_ADMIN))
2416                 return -EPERM;
2417
2418         if (get_user(sync, (__u32 __user *)arg))
2419                 return -EFAULT;
2420
2421         if (f2fs_readonly(sbi->sb))
2422                 return -EROFS;
2423
2424         ret = mnt_want_write_file(filp);
2425         if (ret)
2426                 return ret;
2427
2428         if (!sync) {
2429                 if (!down_write_trylock(&sbi->gc_lock)) {
2430                         ret = -EBUSY;
2431                         goto out;
2432                 }
2433         } else {
2434                 down_write(&sbi->gc_lock);
2435         }
2436
2437         ret = f2fs_gc(sbi, sync, true, NULL_SEGNO);
2438 out:
2439         mnt_drop_write_file(filp);
2440         return ret;
2441 }
2442
2443 static int __f2fs_ioc_gc_range(struct file *filp, struct f2fs_gc_range *range)
2444 {
2445         struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
2446         u64 end;
2447         int ret;
2448
2449         if (!capable(CAP_SYS_ADMIN))
2450                 return -EPERM;
2451         if (f2fs_readonly(sbi->sb))
2452                 return -EROFS;
2453
2454         end = range->start + range->len;
2455         if (end < range->start || range->start < MAIN_BLKADDR(sbi) ||
2456                                         end >= MAX_BLKADDR(sbi))
2457                 return -EINVAL;
2458
2459         ret = mnt_want_write_file(filp);
2460         if (ret)
2461                 return ret;
2462
2463 do_more:
2464         if (!range->sync) {
2465                 if (!down_write_trylock(&sbi->gc_lock)) {
2466                         ret = -EBUSY;
2467                         goto out;
2468                 }
2469         } else {
2470                 down_write(&sbi->gc_lock);
2471         }
2472
2473         ret = f2fs_gc(sbi, range->sync, true, GET_SEGNO(sbi, range->start));
2474         if (ret) {
2475                 if (ret == -EBUSY)
2476                         ret = -EAGAIN;
2477                 goto out;
2478         }
2479         range->start += BLKS_PER_SEC(sbi);
2480         if (range->start <= end)
2481                 goto do_more;
2482 out:
2483         mnt_drop_write_file(filp);
2484         return ret;
2485 }
2486
2487 static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
2488 {
2489         struct f2fs_gc_range range;
2490
2491         if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
2492                                                         sizeof(range)))
2493                 return -EFAULT;
2494         return __f2fs_ioc_gc_range(filp, &range);
2495 }
2496
2497 static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
2498 {
2499         struct inode *inode = file_inode(filp);
2500         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2501         int ret;
2502
2503         if (!capable(CAP_SYS_ADMIN))
2504                 return -EPERM;
2505
2506         if (f2fs_readonly(sbi->sb))
2507                 return -EROFS;
2508
2509         if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
2510                 f2fs_info(sbi, "Skipping Checkpoint. Checkpoints currently disabled.");
2511                 return -EINVAL;
2512         }
2513
2514         ret = mnt_want_write_file(filp);
2515         if (ret)
2516                 return ret;
2517
2518         ret = f2fs_sync_fs(sbi->sb, 1);
2519
2520         mnt_drop_write_file(filp);
2521         return ret;
2522 }
2523
2524 static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
2525                                         struct file *filp,
2526                                         struct f2fs_defragment *range)
2527 {
2528         struct inode *inode = file_inode(filp);
2529         struct f2fs_map_blocks map = { .m_next_extent = NULL,
2530                                         .m_seg_type = NO_CHECK_TYPE ,
2531                                         .m_may_create = false };
2532         struct extent_info ei = {0, 0, 0};
2533         pgoff_t pg_start, pg_end, next_pgofs;
2534         unsigned int blk_per_seg = sbi->blocks_per_seg;
2535         unsigned int total = 0, sec_num;
2536         block_t blk_end = 0;
2537         bool fragmented = false;
2538         int err;
2539
2540         /* if in-place-update policy is enabled, don't waste time here */
2541         if (f2fs_should_update_inplace(inode, NULL))
2542                 return -EINVAL;
2543
2544         pg_start = range->start >> PAGE_SHIFT;
2545         pg_end = (range->start + range->len) >> PAGE_SHIFT;
2546
2547         f2fs_balance_fs(sbi, true);
2548
2549         inode_lock(inode);
2550
2551         /* writeback all dirty pages in the range */
2552         err = filemap_write_and_wait_range(inode->i_mapping, range->start,
2553                                                 range->start + range->len - 1);
2554         if (err)
2555                 goto out;
2556
2557         /*
2558          * lookup mapping info in extent cache, skip defragmenting if physical
2559          * block addresses are continuous.
2560          */
2561         if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) {
2562                 if (ei.fofs + ei.len >= pg_end)
2563                         goto out;
2564         }
2565
2566         map.m_lblk = pg_start;
2567         map.m_next_pgofs = &next_pgofs;
2568
2569         /*
2570          * lookup mapping info in dnode page cache, skip defragmenting if all
2571          * physical block addresses are continuous even if there are hole(s)
2572          * in logical blocks.
2573          */
2574         while (map.m_lblk < pg_end) {
2575                 map.m_len = pg_end - map.m_lblk;
2576                 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
2577                 if (err)
2578                         goto out;
2579
2580                 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
2581                         map.m_lblk = next_pgofs;
2582                         continue;
2583                 }
2584
2585                 if (blk_end && blk_end != map.m_pblk)
2586                         fragmented = true;
2587
2588                 /* record total count of block that we're going to move */
2589                 total += map.m_len;
2590
2591                 blk_end = map.m_pblk + map.m_len;
2592
2593                 map.m_lblk += map.m_len;
2594         }
2595
2596         if (!fragmented) {
2597                 total = 0;
2598                 goto out;
2599         }
2600
2601         sec_num = DIV_ROUND_UP(total, BLKS_PER_SEC(sbi));
2602
2603         /*
2604          * make sure there are enough free section for LFS allocation, this can
2605          * avoid defragment running in SSR mode when free section are allocated
2606          * intensively
2607          */
2608         if (has_not_enough_free_secs(sbi, 0, sec_num)) {
2609                 err = -EAGAIN;
2610                 goto out;
2611         }
2612
2613         map.m_lblk = pg_start;
2614         map.m_len = pg_end - pg_start;
2615         total = 0;
2616
2617         while (map.m_lblk < pg_end) {
2618                 pgoff_t idx;
2619                 int cnt = 0;
2620
2621 do_map:
2622                 map.m_len = pg_end - map.m_lblk;
2623                 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_DEFAULT);
2624                 if (err)
2625                         goto clear_out;
2626
2627                 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
2628                         map.m_lblk = next_pgofs;
2629                         goto check;
2630                 }
2631
2632                 set_inode_flag(inode, FI_DO_DEFRAG);
2633
2634                 idx = map.m_lblk;
2635                 while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) {
2636                         struct page *page;
2637
2638                         page = f2fs_get_lock_data_page(inode, idx, true);
2639                         if (IS_ERR(page)) {
2640                                 err = PTR_ERR(page);
2641                                 goto clear_out;
2642                         }
2643
2644                         set_page_dirty(page);
2645                         f2fs_put_page(page, 1);
2646
2647                         idx++;
2648                         cnt++;
2649                         total++;
2650                 }
2651
2652                 map.m_lblk = idx;
2653 check:
2654                 if (map.m_lblk < pg_end && cnt < blk_per_seg)
2655                         goto do_map;
2656
2657                 clear_inode_flag(inode, FI_DO_DEFRAG);
2658
2659                 err = filemap_fdatawrite(inode->i_mapping);
2660                 if (err)
2661                         goto out;
2662         }
2663 clear_out:
2664         clear_inode_flag(inode, FI_DO_DEFRAG);
2665 out:
2666         inode_unlock(inode);
2667         if (!err)
2668                 range->len = (u64)total << PAGE_SHIFT;
2669         return err;
2670 }
2671
2672 static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
2673 {
2674         struct inode *inode = file_inode(filp);
2675         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2676         struct f2fs_defragment range;
2677         int err;
2678
2679         if (!capable(CAP_SYS_ADMIN))
2680                 return -EPERM;
2681
2682         if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode))
2683                 return -EINVAL;
2684
2685         if (f2fs_readonly(sbi->sb))
2686                 return -EROFS;
2687
2688         if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
2689                                                         sizeof(range)))
2690                 return -EFAULT;
2691
2692         /* verify alignment of offset & size */
2693         if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1))
2694                 return -EINVAL;
2695
2696         if (unlikely((range.start + range.len) >> PAGE_SHIFT >
2697                                         max_file_blocks(inode)))
2698                 return -EINVAL;
2699
2700         err = mnt_want_write_file(filp);
2701         if (err)
2702                 return err;
2703
2704         err = f2fs_defragment_range(sbi, filp, &range);
2705         mnt_drop_write_file(filp);
2706
2707         f2fs_update_time(sbi, REQ_TIME);
2708         if (err < 0)
2709                 return err;
2710
2711         if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
2712                                                         sizeof(range)))
2713                 return -EFAULT;
2714
2715         return 0;
2716 }
2717
2718 static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
2719                         struct file *file_out, loff_t pos_out, size_t len)
2720 {
2721         struct inode *src = file_inode(file_in);
2722         struct inode *dst = file_inode(file_out);
2723         struct f2fs_sb_info *sbi = F2FS_I_SB(src);
2724         size_t olen = len, dst_max_i_size = 0;
2725         size_t dst_osize;
2726         int ret;
2727
2728         if (file_in->f_path.mnt != file_out->f_path.mnt ||
2729                                 src->i_sb != dst->i_sb)
2730                 return -EXDEV;
2731
2732         if (unlikely(f2fs_readonly(src->i_sb)))
2733                 return -EROFS;
2734
2735         if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode))
2736                 return -EINVAL;
2737
2738         if (IS_ENCRYPTED(src) || IS_ENCRYPTED(dst))
2739                 return -EOPNOTSUPP;
2740
2741         if (pos_out < 0 || pos_in < 0)
2742                 return -EINVAL;
2743
2744         if (src == dst) {
2745                 if (pos_in == pos_out)
2746                         return 0;
2747                 if (pos_out > pos_in && pos_out < pos_in + len)
2748                         return -EINVAL;
2749         }
2750
2751         inode_lock(src);
2752         if (src != dst) {
2753                 ret = -EBUSY;
2754                 if (!inode_trylock(dst))
2755                         goto out;
2756         }
2757
2758         ret = -EINVAL;
2759         if (pos_in + len > src->i_size || pos_in + len < pos_in)
2760                 goto out_unlock;
2761         if (len == 0)
2762                 olen = len = src->i_size - pos_in;
2763         if (pos_in + len == src->i_size)
2764                 len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in;
2765         if (len == 0) {
2766                 ret = 0;
2767                 goto out_unlock;
2768         }
2769
2770         dst_osize = dst->i_size;
2771         if (pos_out + olen > dst->i_size)
2772                 dst_max_i_size = pos_out + olen;
2773
2774         /* verify the end result is block aligned */
2775         if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) ||
2776                         !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) ||
2777                         !IS_ALIGNED(pos_out, F2FS_BLKSIZE))
2778                 goto out_unlock;
2779
2780         ret = f2fs_convert_inline_inode(src);
2781         if (ret)
2782                 goto out_unlock;
2783
2784         ret = f2fs_convert_inline_inode(dst);
2785         if (ret)
2786                 goto out_unlock;
2787
2788         /* write out all dirty pages from offset */
2789         ret = filemap_write_and_wait_range(src->i_mapping,
2790                                         pos_in, pos_in + len);
2791         if (ret)
2792                 goto out_unlock;
2793
2794         ret = filemap_write_and_wait_range(dst->i_mapping,
2795                                         pos_out, pos_out + len);
2796         if (ret)
2797                 goto out_unlock;
2798
2799         f2fs_balance_fs(sbi, true);
2800
2801         down_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2802         if (src != dst) {
2803                 ret = -EBUSY;
2804                 if (!down_write_trylock(&F2FS_I(dst)->i_gc_rwsem[WRITE]))
2805                         goto out_src;
2806         }
2807
2808         f2fs_lock_op(sbi);
2809         ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS,
2810                                 pos_out >> F2FS_BLKSIZE_BITS,
2811                                 len >> F2FS_BLKSIZE_BITS, false);
2812
2813         if (!ret) {
2814                 if (dst_max_i_size)
2815                         f2fs_i_size_write(dst, dst_max_i_size);
2816                 else if (dst_osize != dst->i_size)
2817                         f2fs_i_size_write(dst, dst_osize);
2818         }
2819         f2fs_unlock_op(sbi);
2820
2821         if (src != dst)
2822                 up_write(&F2FS_I(dst)->i_gc_rwsem[WRITE]);
2823 out_src:
2824         up_write(&F2FS_I(src)->i_gc_rwsem[WRITE]);
2825 out_unlock:
2826         if (src != dst)
2827                 inode_unlock(dst);
2828 out:
2829         inode_unlock(src);
2830         return ret;
2831 }
2832
2833 static int __f2fs_ioc_move_range(struct file *filp,
2834                                 struct f2fs_move_range *range)
2835 {
2836         struct fd dst;
2837         int err;
2838
2839         if (!(filp->f_mode & FMODE_READ) ||
2840                         !(filp->f_mode & FMODE_WRITE))
2841                 return -EBADF;
2842
2843         dst = fdget(range->dst_fd);
2844         if (!dst.file)
2845                 return -EBADF;
2846
2847         if (!(dst.file->f_mode & FMODE_WRITE)) {
2848                 err = -EBADF;
2849                 goto err_out;
2850         }
2851
2852         err = mnt_want_write_file(filp);
2853         if (err)
2854                 goto err_out;
2855
2856         err = f2fs_move_file_range(filp, range->pos_in, dst.file,
2857                                         range->pos_out, range->len);
2858
2859         mnt_drop_write_file(filp);
2860 err_out:
2861         fdput(dst);
2862         return err;
2863 }
2864
2865 static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
2866 {
2867         struct f2fs_move_range range;
2868
2869         if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
2870                                                         sizeof(range)))
2871                 return -EFAULT;
2872         return __f2fs_ioc_move_range(filp, &range);
2873 }
2874
2875 static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
2876 {
2877         struct inode *inode = file_inode(filp);
2878         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2879         struct sit_info *sm = SIT_I(sbi);
2880         unsigned int start_segno = 0, end_segno = 0;
2881         unsigned int dev_start_segno = 0, dev_end_segno = 0;
2882         struct f2fs_flush_device range;
2883         int ret;
2884
2885         if (!capable(CAP_SYS_ADMIN))
2886                 return -EPERM;
2887
2888         if (f2fs_readonly(sbi->sb))
2889                 return -EROFS;
2890
2891         if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2892                 return -EINVAL;
2893
2894         if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg,
2895                                                         sizeof(range)))
2896                 return -EFAULT;
2897
2898         if (!f2fs_is_multi_device(sbi) || sbi->s_ndevs - 1 <= range.dev_num ||
2899                         __is_large_section(sbi)) {
2900                 f2fs_warn(sbi, "Can't flush %u in %d for segs_per_sec %u != 1",
2901                           range.dev_num, sbi->s_ndevs, sbi->segs_per_sec);
2902                 return -EINVAL;
2903         }
2904
2905         ret = mnt_want_write_file(filp);
2906         if (ret)
2907                 return ret;
2908
2909         if (range.dev_num != 0)
2910                 dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk);
2911         dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk);
2912
2913         start_segno = sm->last_victim[FLUSH_DEVICE];
2914         if (start_segno < dev_start_segno || start_segno >= dev_end_segno)
2915                 start_segno = dev_start_segno;
2916         end_segno = min(start_segno + range.segments, dev_end_segno);
2917
2918         while (start_segno < end_segno) {
2919                 if (!down_write_trylock(&sbi->gc_lock)) {
2920                         ret = -EBUSY;
2921                         goto out;
2922                 }
2923                 sm->last_victim[GC_CB] = end_segno + 1;
2924                 sm->last_victim[GC_GREEDY] = end_segno + 1;
2925                 sm->last_victim[ALLOC_NEXT] = end_segno + 1;
2926                 ret = f2fs_gc(sbi, true, true, start_segno);
2927                 if (ret == -EAGAIN)
2928                         ret = 0;
2929                 else if (ret < 0)
2930                         break;
2931                 start_segno++;
2932         }
2933 out:
2934         mnt_drop_write_file(filp);
2935         return ret;
2936 }
2937
2938 static int f2fs_ioc_get_features(struct file *filp, unsigned long arg)
2939 {
2940         struct inode *inode = file_inode(filp);
2941         u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature);
2942
2943         /* Must validate to set it with SQLite behavior in Android. */
2944         sb_feature |= F2FS_FEATURE_ATOMIC_WRITE;
2945
2946         return put_user(sb_feature, (u32 __user *)arg);
2947 }
2948
2949 #ifdef CONFIG_QUOTA
2950 int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
2951 {
2952         struct dquot *transfer_to[MAXQUOTAS] = {};
2953         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2954         struct super_block *sb = sbi->sb;
2955         int err = 0;
2956
2957         transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
2958         if (!IS_ERR(transfer_to[PRJQUOTA])) {
2959                 err = __dquot_transfer(inode, transfer_to);
2960                 if (err)
2961                         set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
2962                 dqput(transfer_to[PRJQUOTA]);
2963         }
2964         return err;
2965 }
2966
2967 static int f2fs_ioc_setproject(struct inode *inode, __u32 projid)
2968 {
2969         struct f2fs_inode_info *fi = F2FS_I(inode);
2970         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2971         struct page *ipage;
2972         kprojid_t kprojid;
2973         int err;
2974
2975         if (!f2fs_sb_has_project_quota(sbi)) {
2976                 if (projid != F2FS_DEF_PROJID)
2977                         return -EOPNOTSUPP;
2978                 else
2979                         return 0;
2980         }
2981
2982         if (!f2fs_has_extra_attr(inode))
2983                 return -EOPNOTSUPP;
2984
2985         kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
2986
2987         if (projid_eq(kprojid, F2FS_I(inode)->i_projid))
2988                 return 0;
2989
2990         err = -EPERM;
2991         /* Is it quota file? Do not allow user to mess with it */
2992         if (IS_NOQUOTA(inode))
2993                 return err;
2994
2995         ipage = f2fs_get_node_page(sbi, inode->i_ino);
2996         if (IS_ERR(ipage))
2997                 return PTR_ERR(ipage);
2998
2999         if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize,
3000                                                                 i_projid)) {
3001                 err = -EOVERFLOW;
3002                 f2fs_put_page(ipage, 1);
3003                 return err;
3004         }
3005         f2fs_put_page(ipage, 1);
3006
3007         err = dquot_initialize(inode);
3008         if (err)
3009                 return err;
3010
3011         f2fs_lock_op(sbi);
3012         err = f2fs_transfer_project_quota(inode, kprojid);
3013         if (err)
3014                 goto out_unlock;
3015
3016         F2FS_I(inode)->i_projid = kprojid;
3017         inode->i_ctime = current_time(inode);
3018         f2fs_mark_inode_dirty_sync(inode, true);
3019 out_unlock:
3020         f2fs_unlock_op(sbi);
3021         return err;
3022 }
3023 #else
3024 int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid)
3025 {
3026         return 0;
3027 }
3028
3029 static int f2fs_ioc_setproject(struct inode *inode, __u32 projid)
3030 {
3031         if (projid != F2FS_DEF_PROJID)
3032                 return -EOPNOTSUPP;
3033         return 0;
3034 }
3035 #endif
3036
3037 int f2fs_fileattr_get(struct dentry *dentry, struct fileattr *fa)
3038 {
3039         struct inode *inode = d_inode(dentry);
3040         struct f2fs_inode_info *fi = F2FS_I(inode);
3041         u32 fsflags = f2fs_iflags_to_fsflags(fi->i_flags);
3042
3043         if (IS_ENCRYPTED(inode))
3044                 fsflags |= FS_ENCRYPT_FL;
3045         if (IS_VERITY(inode))
3046                 fsflags |= FS_VERITY_FL;
3047         if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode))
3048                 fsflags |= FS_INLINE_DATA_FL;
3049         if (is_inode_flag_set(inode, FI_PIN_FILE))
3050                 fsflags |= FS_NOCOW_FL;
3051
3052         fileattr_fill_flags(fa, fsflags & F2FS_GETTABLE_FS_FL);
3053
3054         if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)))
3055                 fa->fsx_projid = from_kprojid(&init_user_ns, fi->i_projid);
3056
3057         return 0;
3058 }
3059
3060 int f2fs_fileattr_set(struct user_namespace *mnt_userns,
3061                       struct dentry *dentry, struct fileattr *fa)
3062 {
3063         struct inode *inode = d_inode(dentry);
3064         u32 fsflags = fa->flags, mask = F2FS_SETTABLE_FS_FL;
3065         u32 iflags;
3066         int err;
3067
3068         if (unlikely(f2fs_cp_error(F2FS_I_SB(inode))))
3069                 return -EIO;
3070         if (!f2fs_is_checkpoint_ready(F2FS_I_SB(inode)))
3071                 return -ENOSPC;
3072         if (fsflags & ~F2FS_GETTABLE_FS_FL)
3073                 return -EOPNOTSUPP;
3074         fsflags &= F2FS_SETTABLE_FS_FL;
3075         if (!fa->flags_valid)
3076                 mask &= FS_COMMON_FL;
3077
3078         iflags = f2fs_fsflags_to_iflags(fsflags);
3079         if (f2fs_mask_flags(inode->i_mode, iflags) != iflags)
3080                 return -EOPNOTSUPP;
3081
3082         err = f2fs_setflags_common(inode, iflags, f2fs_fsflags_to_iflags(mask));
3083         if (!err)
3084                 err = f2fs_ioc_setproject(inode, fa->fsx_projid);
3085
3086         return err;
3087 }
3088
3089 int f2fs_pin_file_control(struct inode *inode, bool inc)
3090 {
3091         struct f2fs_inode_info *fi = F2FS_I(inode);
3092         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3093
3094         /* Use i_gc_failures for normal file as a risk signal. */
3095         if (inc)
3096                 f2fs_i_gc_failures_write(inode,
3097                                 fi->i_gc_failures[GC_FAILURE_PIN] + 1);
3098
3099         if (fi->i_gc_failures[GC_FAILURE_PIN] > sbi->gc_pin_file_threshold) {
3100                 f2fs_warn(sbi, "%s: Enable GC = ino %lx after %x GC trials",
3101                           __func__, inode->i_ino,
3102                           fi->i_gc_failures[GC_FAILURE_PIN]);
3103                 clear_inode_flag(inode, FI_PIN_FILE);
3104                 return -EAGAIN;
3105         }
3106         return 0;
3107 }
3108
3109 static int f2fs_ioc_set_pin_file(struct file *filp, unsigned long arg)
3110 {
3111         struct inode *inode = file_inode(filp);
3112         __u32 pin;
3113         int ret = 0;
3114
3115         if (get_user(pin, (__u32 __user *)arg))
3116                 return -EFAULT;
3117
3118         if (!S_ISREG(inode->i_mode))
3119                 return -EINVAL;
3120
3121         if (f2fs_readonly(F2FS_I_SB(inode)->sb))
3122                 return -EROFS;
3123
3124         ret = mnt_want_write_file(filp);
3125         if (ret)
3126                 return ret;
3127
3128         inode_lock(inode);
3129
3130         if (f2fs_should_update_outplace(inode, NULL)) {
3131                 ret = -EINVAL;
3132                 goto out;
3133         }
3134
3135         if (!pin) {
3136                 clear_inode_flag(inode, FI_PIN_FILE);
3137                 f2fs_i_gc_failures_write(inode, 0);
3138                 goto done;
3139         }
3140
3141         if (f2fs_pin_file_control(inode, false)) {
3142                 ret = -EAGAIN;
3143                 goto out;
3144         }
3145
3146         ret = f2fs_convert_inline_inode(inode);
3147         if (ret)
3148                 goto out;
3149
3150         if (!f2fs_disable_compressed_file(inode)) {
3151                 ret = -EOPNOTSUPP;
3152                 goto out;
3153         }
3154
3155         set_inode_flag(inode, FI_PIN_FILE);
3156         ret = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
3157 done:
3158         f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3159 out:
3160         inode_unlock(inode);
3161         mnt_drop_write_file(filp);
3162         return ret;
3163 }
3164
3165 static int f2fs_ioc_get_pin_file(struct file *filp, unsigned long arg)
3166 {
3167         struct inode *inode = file_inode(filp);
3168         __u32 pin = 0;
3169
3170         if (is_inode_flag_set(inode, FI_PIN_FILE))
3171                 pin = F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN];
3172         return put_user(pin, (u32 __user *)arg);
3173 }
3174
3175 int f2fs_precache_extents(struct inode *inode)
3176 {
3177         struct f2fs_inode_info *fi = F2FS_I(inode);
3178         struct f2fs_map_blocks map;
3179         pgoff_t m_next_extent;
3180         loff_t end;
3181         int err;
3182
3183         if (is_inode_flag_set(inode, FI_NO_EXTENT))
3184                 return -EOPNOTSUPP;
3185
3186         map.m_lblk = 0;
3187         map.m_next_pgofs = NULL;
3188         map.m_next_extent = &m_next_extent;
3189         map.m_seg_type = NO_CHECK_TYPE;
3190         map.m_may_create = false;
3191         end = max_file_blocks(inode);
3192
3193         while (map.m_lblk < end) {
3194                 map.m_len = end - map.m_lblk;
3195
3196                 down_write(&fi->i_gc_rwsem[WRITE]);
3197                 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_PRECACHE);
3198                 up_write(&fi->i_gc_rwsem[WRITE]);
3199                 if (err)
3200                         return err;
3201
3202                 map.m_lblk = m_next_extent;
3203         }
3204
3205         return err;
3206 }
3207
3208 static int f2fs_ioc_precache_extents(struct file *filp, unsigned long arg)
3209 {
3210         return f2fs_precache_extents(file_inode(filp));
3211 }
3212
3213 static int f2fs_ioc_resize_fs(struct file *filp, unsigned long arg)
3214 {
3215         struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
3216         __u64 block_count;
3217
3218         if (!capable(CAP_SYS_ADMIN))
3219                 return -EPERM;
3220
3221         if (f2fs_readonly(sbi->sb))
3222                 return -EROFS;
3223
3224         if (copy_from_user(&block_count, (void __user *)arg,
3225                            sizeof(block_count)))
3226                 return -EFAULT;
3227
3228         return f2fs_resize_fs(sbi, block_count);
3229 }
3230
3231 static int f2fs_ioc_enable_verity(struct file *filp, unsigned long arg)
3232 {
3233         struct inode *inode = file_inode(filp);
3234
3235         f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
3236
3237         if (!f2fs_sb_has_verity(F2FS_I_SB(inode))) {
3238                 f2fs_warn(F2FS_I_SB(inode),
3239                           "Can't enable fs-verity on inode %lu: the verity feature is not enabled on this filesystem.\n",
3240                           inode->i_ino);
3241                 return -EOPNOTSUPP;
3242         }
3243
3244         return fsverity_ioctl_enable(filp, (const void __user *)arg);
3245 }
3246
3247 static int f2fs_ioc_measure_verity(struct file *filp, unsigned long arg)
3248 {
3249         if (!f2fs_sb_has_verity(F2FS_I_SB(file_inode(filp))))
3250                 return -EOPNOTSUPP;
3251
3252         return fsverity_ioctl_measure(filp, (void __user *)arg);
3253 }
3254
3255 static int f2fs_ioc_read_verity_metadata(struct file *filp, unsigned long arg)
3256 {
3257         if (!f2fs_sb_has_verity(F2FS_I_SB(file_inode(filp))))
3258                 return -EOPNOTSUPP;
3259
3260         return fsverity_ioctl_read_metadata(filp, (const void __user *)arg);
3261 }
3262
3263 static int f2fs_ioc_getfslabel(struct file *filp, unsigned long arg)
3264 {
3265         struct inode *inode = file_inode(filp);
3266         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3267         char *vbuf;
3268         int count;
3269         int err = 0;
3270
3271         vbuf = f2fs_kzalloc(sbi, MAX_VOLUME_NAME, GFP_KERNEL);
3272         if (!vbuf)
3273                 return -ENOMEM;
3274
3275         down_read(&sbi->sb_lock);
3276         count = utf16s_to_utf8s(sbi->raw_super->volume_name,
3277                         ARRAY_SIZE(sbi->raw_super->volume_name),
3278                         UTF16_LITTLE_ENDIAN, vbuf, MAX_VOLUME_NAME);
3279         up_read(&sbi->sb_lock);
3280
3281         if (copy_to_user((char __user *)arg, vbuf,
3282                                 min(FSLABEL_MAX, count)))
3283                 err = -EFAULT;
3284
3285         kfree(vbuf);
3286         return err;
3287 }
3288
3289 static int f2fs_ioc_setfslabel(struct file *filp, unsigned long arg)
3290 {
3291         struct inode *inode = file_inode(filp);
3292         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3293         char *vbuf;
3294         int err = 0;
3295
3296         if (!capable(CAP_SYS_ADMIN))
3297                 return -EPERM;
3298
3299         vbuf = strndup_user((const char __user *)arg, FSLABEL_MAX);
3300         if (IS_ERR(vbuf))
3301                 return PTR_ERR(vbuf);
3302
3303         err = mnt_want_write_file(filp);
3304         if (err)
3305                 goto out;
3306
3307         down_write(&sbi->sb_lock);
3308
3309         memset(sbi->raw_super->volume_name, 0,
3310                         sizeof(sbi->raw_super->volume_name));
3311         utf8s_to_utf16s(vbuf, strlen(vbuf), UTF16_LITTLE_ENDIAN,
3312                         sbi->raw_super->volume_name,
3313                         ARRAY_SIZE(sbi->raw_super->volume_name));
3314
3315         err = f2fs_commit_super(sbi, false);
3316
3317         up_write(&sbi->sb_lock);
3318
3319         mnt_drop_write_file(filp);
3320 out:
3321         kfree(vbuf);
3322         return err;
3323 }
3324
3325 static int f2fs_get_compress_blocks(struct file *filp, unsigned long arg)
3326 {
3327         struct inode *inode = file_inode(filp);
3328         __u64 blocks;
3329
3330         if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3331                 return -EOPNOTSUPP;
3332
3333         if (!f2fs_compressed_file(inode))
3334                 return -EINVAL;
3335
3336         blocks = atomic_read(&F2FS_I(inode)->i_compr_blocks);
3337         return put_user(blocks, (u64 __user *)arg);
3338 }
3339
3340 static int release_compress_blocks(struct dnode_of_data *dn, pgoff_t count)
3341 {
3342         struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
3343         unsigned int released_blocks = 0;
3344         int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
3345         block_t blkaddr;
3346         int i;
3347
3348         for (i = 0; i < count; i++) {
3349                 blkaddr = data_blkaddr(dn->inode, dn->node_page,
3350                                                 dn->ofs_in_node + i);
3351
3352                 if (!__is_valid_data_blkaddr(blkaddr))
3353                         continue;
3354                 if (unlikely(!f2fs_is_valid_blkaddr(sbi, blkaddr,
3355                                         DATA_GENERIC_ENHANCE)))
3356                         return -EFSCORRUPTED;
3357         }
3358
3359         while (count) {
3360                 int compr_blocks = 0;
3361
3362                 for (i = 0; i < cluster_size; i++, dn->ofs_in_node++) {
3363                         blkaddr = f2fs_data_blkaddr(dn);
3364
3365                         if (i == 0) {
3366                                 if (blkaddr == COMPRESS_ADDR)
3367                                         continue;
3368                                 dn->ofs_in_node += cluster_size;
3369                                 goto next;
3370                         }
3371
3372                         if (__is_valid_data_blkaddr(blkaddr))
3373                                 compr_blocks++;
3374
3375                         if (blkaddr != NEW_ADDR)
3376                                 continue;
3377
3378                         dn->data_blkaddr = NULL_ADDR;
3379                         f2fs_set_data_blkaddr(dn);
3380                 }
3381
3382                 f2fs_i_compr_blocks_update(dn->inode, compr_blocks, false);
3383                 dec_valid_block_count(sbi, dn->inode,
3384                                         cluster_size - compr_blocks);
3385
3386                 released_blocks += cluster_size - compr_blocks;
3387 next:
3388                 count -= cluster_size;
3389         }
3390
3391         return released_blocks;
3392 }
3393
3394 static int f2fs_release_compress_blocks(struct file *filp, unsigned long arg)
3395 {
3396         struct inode *inode = file_inode(filp);
3397         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3398         pgoff_t page_idx = 0, last_idx;
3399         unsigned int released_blocks = 0;
3400         int ret;
3401         int writecount;
3402
3403         if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3404                 return -EOPNOTSUPP;
3405
3406         if (!f2fs_compressed_file(inode))
3407                 return -EINVAL;
3408
3409         if (f2fs_readonly(sbi->sb))
3410                 return -EROFS;
3411
3412         ret = mnt_want_write_file(filp);
3413         if (ret)
3414                 return ret;
3415
3416         f2fs_balance_fs(F2FS_I_SB(inode), true);
3417
3418         inode_lock(inode);
3419
3420         writecount = atomic_read(&inode->i_writecount);
3421         if ((filp->f_mode & FMODE_WRITE && writecount != 1) ||
3422                         (!(filp->f_mode & FMODE_WRITE) && writecount)) {
3423                 ret = -EBUSY;
3424                 goto out;
3425         }
3426
3427         if (IS_IMMUTABLE(inode)) {
3428                 ret = -EINVAL;
3429                 goto out;
3430         }
3431
3432         ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
3433         if (ret)
3434                 goto out;
3435
3436         F2FS_I(inode)->i_flags |= F2FS_IMMUTABLE_FL;
3437         f2fs_set_inode_flags(inode);
3438         inode->i_ctime = current_time(inode);
3439         f2fs_mark_inode_dirty_sync(inode, true);
3440
3441         if (!atomic_read(&F2FS_I(inode)->i_compr_blocks))
3442                 goto out;
3443
3444         down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3445         down_write(&F2FS_I(inode)->i_mmap_sem);
3446
3447         last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
3448
3449         while (page_idx < last_idx) {
3450                 struct dnode_of_data dn;
3451                 pgoff_t end_offset, count;
3452
3453                 set_new_dnode(&dn, inode, NULL, NULL, 0);
3454                 ret = f2fs_get_dnode_of_data(&dn, page_idx, LOOKUP_NODE);
3455                 if (ret) {
3456                         if (ret == -ENOENT) {
3457                                 page_idx = f2fs_get_next_page_offset(&dn,
3458                                                                 page_idx);
3459                                 ret = 0;
3460                                 continue;
3461                         }
3462                         break;
3463                 }
3464
3465                 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
3466                 count = min(end_offset - dn.ofs_in_node, last_idx - page_idx);
3467                 count = round_up(count, F2FS_I(inode)->i_cluster_size);
3468
3469                 ret = release_compress_blocks(&dn, count);
3470
3471                 f2fs_put_dnode(&dn);
3472
3473                 if (ret < 0)
3474                         break;
3475
3476                 page_idx += count;
3477                 released_blocks += ret;
3478         }
3479
3480         up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3481         up_write(&F2FS_I(inode)->i_mmap_sem);
3482 out:
3483         inode_unlock(inode);
3484
3485         mnt_drop_write_file(filp);
3486
3487         if (ret >= 0) {
3488                 ret = put_user(released_blocks, (u64 __user *)arg);
3489         } else if (released_blocks &&
3490                         atomic_read(&F2FS_I(inode)->i_compr_blocks)) {
3491                 set_sbi_flag(sbi, SBI_NEED_FSCK);
3492                 f2fs_warn(sbi, "%s: partial blocks were released i_ino=%lx "
3493                         "iblocks=%llu, released=%u, compr_blocks=%u, "
3494                         "run fsck to fix.",
3495                         __func__, inode->i_ino, inode->i_blocks,
3496                         released_blocks,
3497                         atomic_read(&F2FS_I(inode)->i_compr_blocks));
3498         }
3499
3500         return ret;
3501 }
3502
3503 static int reserve_compress_blocks(struct dnode_of_data *dn, pgoff_t count)
3504 {
3505         struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
3506         unsigned int reserved_blocks = 0;
3507         int cluster_size = F2FS_I(dn->inode)->i_cluster_size;
3508         block_t blkaddr;
3509         int i;
3510
3511         for (i = 0; i < count; i++) {
3512                 blkaddr = data_blkaddr(dn->inode, dn->node_page,
3513                                                 dn->ofs_in_node + i);
3514
3515                 if (!__is_valid_data_blkaddr(blkaddr))
3516                         continue;
3517                 if (unlikely(!f2fs_is_valid_blkaddr(sbi, blkaddr,
3518                                         DATA_GENERIC_ENHANCE)))
3519                         return -EFSCORRUPTED;
3520         }
3521
3522         while (count) {
3523                 int compr_blocks = 0;
3524                 blkcnt_t reserved;
3525                 int ret;
3526
3527                 for (i = 0; i < cluster_size; i++, dn->ofs_in_node++) {
3528                         blkaddr = f2fs_data_blkaddr(dn);
3529
3530                         if (i == 0) {
3531                                 if (blkaddr == COMPRESS_ADDR)
3532                                         continue;
3533                                 dn->ofs_in_node += cluster_size;
3534                                 goto next;
3535                         }
3536
3537                         if (__is_valid_data_blkaddr(blkaddr)) {
3538                                 compr_blocks++;
3539                                 continue;
3540                         }
3541
3542                         dn->data_blkaddr = NEW_ADDR;
3543                         f2fs_set_data_blkaddr(dn);
3544                 }
3545
3546                 reserved = cluster_size - compr_blocks;
3547                 ret = inc_valid_block_count(sbi, dn->inode, &reserved);
3548                 if (ret)
3549                         return ret;
3550
3551                 if (reserved != cluster_size - compr_blocks)
3552                         return -ENOSPC;
3553
3554                 f2fs_i_compr_blocks_update(dn->inode, compr_blocks, true);
3555
3556                 reserved_blocks += reserved;
3557 next:
3558                 count -= cluster_size;
3559         }
3560
3561         return reserved_blocks;
3562 }
3563
3564 static int f2fs_reserve_compress_blocks(struct file *filp, unsigned long arg)
3565 {
3566         struct inode *inode = file_inode(filp);
3567         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3568         pgoff_t page_idx = 0, last_idx;
3569         unsigned int reserved_blocks = 0;
3570         int ret;
3571
3572         if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3573                 return -EOPNOTSUPP;
3574
3575         if (!f2fs_compressed_file(inode))
3576                 return -EINVAL;
3577
3578         if (f2fs_readonly(sbi->sb))
3579                 return -EROFS;
3580
3581         ret = mnt_want_write_file(filp);
3582         if (ret)
3583                 return ret;
3584
3585         if (atomic_read(&F2FS_I(inode)->i_compr_blocks))
3586                 goto out;
3587
3588         f2fs_balance_fs(F2FS_I_SB(inode), true);
3589
3590         inode_lock(inode);
3591
3592         if (!IS_IMMUTABLE(inode)) {
3593                 ret = -EINVAL;
3594                 goto unlock_inode;
3595         }
3596
3597         down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3598         down_write(&F2FS_I(inode)->i_mmap_sem);
3599
3600         last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
3601
3602         while (page_idx < last_idx) {
3603                 struct dnode_of_data dn;
3604                 pgoff_t end_offset, count;
3605
3606                 set_new_dnode(&dn, inode, NULL, NULL, 0);
3607                 ret = f2fs_get_dnode_of_data(&dn, page_idx, LOOKUP_NODE);
3608                 if (ret) {
3609                         if (ret == -ENOENT) {
3610                                 page_idx = f2fs_get_next_page_offset(&dn,
3611                                                                 page_idx);
3612                                 ret = 0;
3613                                 continue;
3614                         }
3615                         break;
3616                 }
3617
3618                 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
3619                 count = min(end_offset - dn.ofs_in_node, last_idx - page_idx);
3620                 count = round_up(count, F2FS_I(inode)->i_cluster_size);
3621
3622                 ret = reserve_compress_blocks(&dn, count);
3623
3624                 f2fs_put_dnode(&dn);
3625
3626                 if (ret < 0)
3627                         break;
3628
3629                 page_idx += count;
3630                 reserved_blocks += ret;
3631         }
3632
3633         up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3634         up_write(&F2FS_I(inode)->i_mmap_sem);
3635
3636         if (ret >= 0) {
3637                 F2FS_I(inode)->i_flags &= ~F2FS_IMMUTABLE_FL;
3638                 f2fs_set_inode_flags(inode);
3639                 inode->i_ctime = current_time(inode);
3640                 f2fs_mark_inode_dirty_sync(inode, true);
3641         }
3642 unlock_inode:
3643         inode_unlock(inode);
3644 out:
3645         mnt_drop_write_file(filp);
3646
3647         if (ret >= 0) {
3648                 ret = put_user(reserved_blocks, (u64 __user *)arg);
3649         } else if (reserved_blocks &&
3650                         atomic_read(&F2FS_I(inode)->i_compr_blocks)) {
3651                 set_sbi_flag(sbi, SBI_NEED_FSCK);
3652                 f2fs_warn(sbi, "%s: partial blocks were released i_ino=%lx "
3653                         "iblocks=%llu, reserved=%u, compr_blocks=%u, "
3654                         "run fsck to fix.",
3655                         __func__, inode->i_ino, inode->i_blocks,
3656                         reserved_blocks,
3657                         atomic_read(&F2FS_I(inode)->i_compr_blocks));
3658         }
3659
3660         return ret;
3661 }
3662
3663 static int f2fs_secure_erase(struct block_device *bdev, struct inode *inode,
3664                 pgoff_t off, block_t block, block_t len, u32 flags)
3665 {
3666         struct request_queue *q = bdev_get_queue(bdev);
3667         sector_t sector = SECTOR_FROM_BLOCK(block);
3668         sector_t nr_sects = SECTOR_FROM_BLOCK(len);
3669         int ret = 0;
3670
3671         if (!q)
3672                 return -ENXIO;
3673
3674         if (flags & F2FS_TRIM_FILE_DISCARD)
3675                 ret = blkdev_issue_discard(bdev, sector, nr_sects, GFP_NOFS,
3676                                                 blk_queue_secure_erase(q) ?
3677                                                 BLKDEV_DISCARD_SECURE : 0);
3678
3679         if (!ret && (flags & F2FS_TRIM_FILE_ZEROOUT)) {
3680                 if (IS_ENCRYPTED(inode))
3681                         ret = fscrypt_zeroout_range(inode, off, block, len);
3682                 else
3683                         ret = blkdev_issue_zeroout(bdev, sector, nr_sects,
3684                                         GFP_NOFS, 0);
3685         }
3686
3687         return ret;
3688 }
3689
3690 static int f2fs_sec_trim_file(struct file *filp, unsigned long arg)
3691 {
3692         struct inode *inode = file_inode(filp);
3693         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3694         struct address_space *mapping = inode->i_mapping;
3695         struct block_device *prev_bdev = NULL;
3696         struct f2fs_sectrim_range range;
3697         pgoff_t index, pg_end, prev_index = 0;
3698         block_t prev_block = 0, len = 0;
3699         loff_t end_addr;
3700         bool to_end = false;
3701         int ret = 0;
3702
3703         if (!(filp->f_mode & FMODE_WRITE))
3704                 return -EBADF;
3705
3706         if (copy_from_user(&range, (struct f2fs_sectrim_range __user *)arg,
3707                                 sizeof(range)))
3708                 return -EFAULT;
3709
3710         if (range.flags == 0 || (range.flags & ~F2FS_TRIM_FILE_MASK) ||
3711                         !S_ISREG(inode->i_mode))
3712                 return -EINVAL;
3713
3714         if (((range.flags & F2FS_TRIM_FILE_DISCARD) &&
3715                         !f2fs_hw_support_discard(sbi)) ||
3716                         ((range.flags & F2FS_TRIM_FILE_ZEROOUT) &&
3717                          IS_ENCRYPTED(inode) && f2fs_is_multi_device(sbi)))
3718                 return -EOPNOTSUPP;
3719
3720         file_start_write(filp);
3721         inode_lock(inode);
3722
3723         if (f2fs_is_atomic_file(inode) || f2fs_compressed_file(inode) ||
3724                         range.start >= inode->i_size) {
3725                 ret = -EINVAL;
3726                 goto err;
3727         }
3728
3729         if (range.len == 0)
3730                 goto err;
3731
3732         if (inode->i_size - range.start > range.len) {
3733                 end_addr = range.start + range.len;
3734         } else {
3735                 end_addr = range.len == (u64)-1 ?
3736                         sbi->sb->s_maxbytes : inode->i_size;
3737                 to_end = true;
3738         }
3739
3740         if (!IS_ALIGNED(range.start, F2FS_BLKSIZE) ||
3741                         (!to_end && !IS_ALIGNED(end_addr, F2FS_BLKSIZE))) {
3742                 ret = -EINVAL;
3743                 goto err;
3744         }
3745
3746         index = F2FS_BYTES_TO_BLK(range.start);
3747         pg_end = DIV_ROUND_UP(end_addr, F2FS_BLKSIZE);
3748
3749         ret = f2fs_convert_inline_inode(inode);
3750         if (ret)
3751                 goto err;
3752
3753         down_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3754         down_write(&F2FS_I(inode)->i_mmap_sem);
3755
3756         ret = filemap_write_and_wait_range(mapping, range.start,
3757                         to_end ? LLONG_MAX : end_addr - 1);
3758         if (ret)
3759                 goto out;
3760
3761         truncate_inode_pages_range(mapping, range.start,
3762                         to_end ? -1 : end_addr - 1);
3763
3764         while (index < pg_end) {
3765                 struct dnode_of_data dn;
3766                 pgoff_t end_offset, count;
3767                 int i;
3768
3769                 set_new_dnode(&dn, inode, NULL, NULL, 0);
3770                 ret = f2fs_get_dnode_of_data(&dn, index, LOOKUP_NODE);
3771                 if (ret) {
3772                         if (ret == -ENOENT) {
3773                                 index = f2fs_get_next_page_offset(&dn, index);
3774                                 continue;
3775                         }
3776                         goto out;
3777                 }
3778
3779                 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
3780                 count = min(end_offset - dn.ofs_in_node, pg_end - index);
3781                 for (i = 0; i < count; i++, index++, dn.ofs_in_node++) {
3782                         struct block_device *cur_bdev;
3783                         block_t blkaddr = f2fs_data_blkaddr(&dn);
3784
3785                         if (!__is_valid_data_blkaddr(blkaddr))
3786                                 continue;
3787
3788                         if (!f2fs_is_valid_blkaddr(sbi, blkaddr,
3789                                                 DATA_GENERIC_ENHANCE)) {
3790                                 ret = -EFSCORRUPTED;
3791                                 f2fs_put_dnode(&dn);
3792                                 goto out;
3793                         }
3794
3795                         cur_bdev = f2fs_target_device(sbi, blkaddr, NULL);
3796                         if (f2fs_is_multi_device(sbi)) {
3797                                 int di = f2fs_target_device_index(sbi, blkaddr);
3798
3799                                 blkaddr -= FDEV(di).start_blk;
3800                         }
3801
3802                         if (len) {
3803                                 if (prev_bdev == cur_bdev &&
3804                                                 index == prev_index + len &&
3805                                                 blkaddr == prev_block + len) {
3806                                         len++;
3807                                 } else {
3808                                         ret = f2fs_secure_erase(prev_bdev,
3809                                                 inode, prev_index, prev_block,
3810                                                 len, range.flags);
3811                                         if (ret) {
3812                                                 f2fs_put_dnode(&dn);
3813                                                 goto out;
3814                                         }
3815
3816                                         len = 0;
3817                                 }
3818                         }
3819
3820                         if (!len) {
3821                                 prev_bdev = cur_bdev;
3822                                 prev_index = index;
3823                                 prev_block = blkaddr;
3824                                 len = 1;
3825                         }
3826                 }
3827
3828                 f2fs_put_dnode(&dn);
3829
3830                 if (fatal_signal_pending(current)) {
3831                         ret = -EINTR;
3832                         goto out;
3833                 }
3834                 cond_resched();
3835         }
3836
3837         if (len)
3838                 ret = f2fs_secure_erase(prev_bdev, inode, prev_index,
3839                                 prev_block, len, range.flags);
3840 out:
3841         up_write(&F2FS_I(inode)->i_mmap_sem);
3842         up_write(&F2FS_I(inode)->i_gc_rwsem[WRITE]);
3843 err:
3844         inode_unlock(inode);
3845         file_end_write(filp);
3846
3847         return ret;
3848 }
3849
3850 static int f2fs_ioc_get_compress_option(struct file *filp, unsigned long arg)
3851 {
3852         struct inode *inode = file_inode(filp);
3853         struct f2fs_comp_option option;
3854
3855         if (!f2fs_sb_has_compression(F2FS_I_SB(inode)))
3856                 return -EOPNOTSUPP;
3857
3858         inode_lock_shared(inode);
3859
3860         if (!f2fs_compressed_file(inode)) {
3861                 inode_unlock_shared(inode);
3862                 return -ENODATA;
3863         }
3864
3865         option.algorithm = F2FS_I(inode)->i_compress_algorithm;
3866         option.log_cluster_size = F2FS_I(inode)->i_log_cluster_size;
3867
3868         inode_unlock_shared(inode);
3869
3870         if (copy_to_user((struct f2fs_comp_option __user *)arg, &option,
3871                                 sizeof(option)))
3872                 return -EFAULT;
3873
3874         return 0;
3875 }
3876
3877 static int f2fs_ioc_set_compress_option(struct file *filp, unsigned long arg)
3878 {
3879         struct inode *inode = file_inode(filp);
3880         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3881         struct f2fs_comp_option option;
3882         int ret = 0;
3883
3884         if (!f2fs_sb_has_compression(sbi))
3885                 return -EOPNOTSUPP;
3886
3887         if (!(filp->f_mode & FMODE_WRITE))
3888                 return -EBADF;
3889
3890         if (copy_from_user(&option, (struct f2fs_comp_option __user *)arg,
3891                                 sizeof(option)))
3892                 return -EFAULT;
3893
3894         if (!f2fs_compressed_file(inode) ||
3895                         option.log_cluster_size < MIN_COMPRESS_LOG_SIZE ||
3896                         option.log_cluster_size > MAX_COMPRESS_LOG_SIZE ||
3897                         option.algorithm >= COMPRESS_MAX)
3898                 return -EINVAL;
3899
3900         file_start_write(filp);
3901         inode_lock(inode);
3902
3903         if (f2fs_is_mmap_file(inode) || get_dirty_pages(inode)) {
3904                 ret = -EBUSY;
3905                 goto out;
3906         }
3907
3908         if (inode->i_size != 0) {
3909                 ret = -EFBIG;
3910                 goto out;
3911         }
3912
3913         F2FS_I(inode)->i_compress_algorithm = option.algorithm;
3914         F2FS_I(inode)->i_log_cluster_size = option.log_cluster_size;
3915         F2FS_I(inode)->i_cluster_size = 1 << option.log_cluster_size;
3916         f2fs_mark_inode_dirty_sync(inode, true);
3917
3918         if (!f2fs_is_compress_backend_ready(inode))
3919                 f2fs_warn(sbi, "compression algorithm is successfully set, "
3920                         "but current kernel doesn't support this algorithm.");
3921 out:
3922         inode_unlock(inode);
3923         file_end_write(filp);
3924
3925         return ret;
3926 }
3927
3928 static int redirty_blocks(struct inode *inode, pgoff_t page_idx, int len)
3929 {
3930         DEFINE_READAHEAD(ractl, NULL, NULL, inode->i_mapping, page_idx);
3931         struct address_space *mapping = inode->i_mapping;
3932         struct page *page;
3933         pgoff_t redirty_idx = page_idx;
3934         int i, page_len = 0, ret = 0;
3935
3936         page_cache_ra_unbounded(&ractl, len, 0);
3937
3938         for (i = 0; i < len; i++, page_idx++) {
3939                 page = read_cache_page(mapping, page_idx, NULL, NULL);
3940                 if (IS_ERR(page)) {
3941                         ret = PTR_ERR(page);
3942                         break;
3943                 }
3944                 page_len++;
3945         }
3946
3947         for (i = 0; i < page_len; i++, redirty_idx++) {
3948                 page = find_lock_page(mapping, redirty_idx);
3949                 if (!page) {
3950                         ret = -ENOMEM;
3951                         break;
3952                 }
3953                 set_page_dirty(page);
3954                 f2fs_put_page(page, 1);
3955                 f2fs_put_page(page, 0);
3956         }
3957
3958         return ret;
3959 }
3960
3961 static int f2fs_ioc_decompress_file(struct file *filp, unsigned long arg)
3962 {
3963         struct inode *inode = file_inode(filp);
3964         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3965         struct f2fs_inode_info *fi = F2FS_I(inode);
3966         pgoff_t page_idx = 0, last_idx;
3967         unsigned int blk_per_seg = sbi->blocks_per_seg;
3968         int cluster_size = F2FS_I(inode)->i_cluster_size;
3969         int count, ret;
3970
3971         if (!f2fs_sb_has_compression(sbi) ||
3972                         F2FS_OPTION(sbi).compress_mode != COMPR_MODE_USER)
3973                 return -EOPNOTSUPP;
3974
3975         if (!(filp->f_mode & FMODE_WRITE))
3976                 return -EBADF;
3977
3978         if (!f2fs_compressed_file(inode))
3979                 return -EINVAL;
3980
3981         f2fs_balance_fs(F2FS_I_SB(inode), true);
3982
3983         file_start_write(filp);
3984         inode_lock(inode);
3985
3986         if (!f2fs_is_compress_backend_ready(inode)) {
3987                 ret = -EOPNOTSUPP;
3988                 goto out;
3989         }
3990
3991         if (f2fs_is_mmap_file(inode)) {
3992                 ret = -EBUSY;
3993                 goto out;
3994         }
3995
3996         ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
3997         if (ret)
3998                 goto out;
3999
4000         if (!atomic_read(&fi->i_compr_blocks))
4001                 goto out;
4002
4003         last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
4004
4005         count = last_idx - page_idx;
4006         while (count) {
4007                 int len = min(cluster_size, count);
4008
4009                 ret = redirty_blocks(inode, page_idx, len);
4010                 if (ret < 0)
4011                         break;
4012
4013                 if (get_dirty_pages(inode) >= blk_per_seg)
4014                         filemap_fdatawrite(inode->i_mapping);
4015
4016                 count -= len;
4017                 page_idx += len;
4018         }
4019
4020         if (!ret)
4021                 ret = filemap_write_and_wait_range(inode->i_mapping, 0,
4022                                                         LLONG_MAX);
4023
4024         if (ret)
4025                 f2fs_warn(sbi, "%s: The file might be partially decompressed "
4026                                 "(errno=%d). Please delete the file.\n",
4027                                 __func__, ret);
4028 out:
4029         inode_unlock(inode);
4030         file_end_write(filp);
4031
4032         return ret;
4033 }
4034
4035 static int f2fs_ioc_compress_file(struct file *filp, unsigned long arg)
4036 {
4037         struct inode *inode = file_inode(filp);
4038         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4039         pgoff_t page_idx = 0, last_idx;
4040         unsigned int blk_per_seg = sbi->blocks_per_seg;
4041         int cluster_size = F2FS_I(inode)->i_cluster_size;
4042         int count, ret;
4043
4044         if (!f2fs_sb_has_compression(sbi) ||
4045                         F2FS_OPTION(sbi).compress_mode != COMPR_MODE_USER)
4046                 return -EOPNOTSUPP;
4047
4048         if (!(filp->f_mode & FMODE_WRITE))
4049                 return -EBADF;
4050
4051         if (!f2fs_compressed_file(inode))
4052                 return -EINVAL;
4053
4054         f2fs_balance_fs(F2FS_I_SB(inode), true);
4055
4056         file_start_write(filp);
4057         inode_lock(inode);
4058
4059         if (!f2fs_is_compress_backend_ready(inode)) {
4060                 ret = -EOPNOTSUPP;
4061                 goto out;
4062         }
4063
4064         if (f2fs_is_mmap_file(inode)) {
4065                 ret = -EBUSY;
4066                 goto out;
4067         }
4068
4069         ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
4070         if (ret)
4071                 goto out;
4072
4073         set_inode_flag(inode, FI_ENABLE_COMPRESS);
4074
4075         last_idx = DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE);
4076
4077         count = last_idx - page_idx;
4078         while (count) {
4079                 int len = min(cluster_size, count);
4080
4081                 ret = redirty_blocks(inode, page_idx, len);
4082                 if (ret < 0)
4083                         break;
4084
4085                 if (get_dirty_pages(inode) >= blk_per_seg)
4086                         filemap_fdatawrite(inode->i_mapping);
4087
4088                 count -= len;
4089                 page_idx += len;
4090         }
4091
4092         if (!ret)
4093                 ret = filemap_write_and_wait_range(inode->i_mapping, 0,
4094                                                         LLONG_MAX);
4095
4096         clear_inode_flag(inode, FI_ENABLE_COMPRESS);
4097
4098         if (ret)
4099                 f2fs_warn(sbi, "%s: The file might be partially compressed "
4100                                 "(errno=%d). Please delete the file.\n",
4101                                 __func__, ret);
4102 out:
4103         inode_unlock(inode);
4104         file_end_write(filp);
4105
4106         return ret;
4107 }
4108
4109 static long __f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
4110 {
4111         switch (cmd) {
4112         case FS_IOC_GETVERSION:
4113                 return f2fs_ioc_getversion(filp, arg);
4114         case F2FS_IOC_START_ATOMIC_WRITE:
4115                 return f2fs_ioc_start_atomic_write(filp);
4116         case F2FS_IOC_COMMIT_ATOMIC_WRITE:
4117                 return f2fs_ioc_commit_atomic_write(filp);
4118         case F2FS_IOC_START_VOLATILE_WRITE:
4119                 return f2fs_ioc_start_volatile_write(filp);
4120         case F2FS_IOC_RELEASE_VOLATILE_WRITE:
4121                 return f2fs_ioc_release_volatile_write(filp);
4122         case F2FS_IOC_ABORT_VOLATILE_WRITE:
4123                 return f2fs_ioc_abort_volatile_write(filp);
4124         case F2FS_IOC_SHUTDOWN:
4125                 return f2fs_ioc_shutdown(filp, arg);
4126         case FITRIM:
4127                 return f2fs_ioc_fitrim(filp, arg);
4128         case FS_IOC_SET_ENCRYPTION_POLICY:
4129                 return f2fs_ioc_set_encryption_policy(filp, arg);
4130         case FS_IOC_GET_ENCRYPTION_POLICY:
4131                 return f2fs_ioc_get_encryption_policy(filp, arg);
4132         case FS_IOC_GET_ENCRYPTION_PWSALT:
4133                 return f2fs_ioc_get_encryption_pwsalt(filp, arg);
4134         case FS_IOC_GET_ENCRYPTION_POLICY_EX:
4135                 return f2fs_ioc_get_encryption_policy_ex(filp, arg);
4136         case FS_IOC_ADD_ENCRYPTION_KEY:
4137                 return f2fs_ioc_add_encryption_key(filp, arg);
4138         case FS_IOC_REMOVE_ENCRYPTION_KEY:
4139                 return f2fs_ioc_remove_encryption_key(filp, arg);
4140         case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
4141                 return f2fs_ioc_remove_encryption_key_all_users(filp, arg);
4142         case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
4143                 return f2fs_ioc_get_encryption_key_status(filp, arg);
4144         case FS_IOC_GET_ENCRYPTION_NONCE:
4145                 return f2fs_ioc_get_encryption_nonce(filp, arg);
4146         case F2FS_IOC_GARBAGE_COLLECT:
4147                 return f2fs_ioc_gc(filp, arg);
4148         case F2FS_IOC_GARBAGE_COLLECT_RANGE:
4149                 return f2fs_ioc_gc_range(filp, arg);
4150         case F2FS_IOC_WRITE_CHECKPOINT:
4151                 return f2fs_ioc_write_checkpoint(filp, arg);
4152         case F2FS_IOC_DEFRAGMENT:
4153                 return f2fs_ioc_defragment(filp, arg);
4154         case F2FS_IOC_MOVE_RANGE:
4155                 return f2fs_ioc_move_range(filp, arg);
4156         case F2FS_IOC_FLUSH_DEVICE:
4157                 return f2fs_ioc_flush_device(filp, arg);
4158         case F2FS_IOC_GET_FEATURES:
4159                 return f2fs_ioc_get_features(filp, arg);
4160         case F2FS_IOC_GET_PIN_FILE:
4161                 return f2fs_ioc_get_pin_file(filp, arg);
4162         case F2FS_IOC_SET_PIN_FILE:
4163                 return f2fs_ioc_set_pin_file(filp, arg);
4164         case F2FS_IOC_PRECACHE_EXTENTS:
4165                 return f2fs_ioc_precache_extents(filp, arg);
4166         case F2FS_IOC_RESIZE_FS:
4167                 return f2fs_ioc_resize_fs(filp, arg);
4168         case FS_IOC_ENABLE_VERITY:
4169                 return f2fs_ioc_enable_verity(filp, arg);
4170         case FS_IOC_MEASURE_VERITY:
4171                 return f2fs_ioc_measure_verity(filp, arg);
4172         case FS_IOC_READ_VERITY_METADATA:
4173                 return f2fs_ioc_read_verity_metadata(filp, arg);
4174         case FS_IOC_GETFSLABEL:
4175                 return f2fs_ioc_getfslabel(filp, arg);
4176         case FS_IOC_SETFSLABEL:
4177                 return f2fs_ioc_setfslabel(filp, arg);
4178         case F2FS_IOC_GET_COMPRESS_BLOCKS:
4179                 return f2fs_get_compress_blocks(filp, arg);
4180         case F2FS_IOC_RELEASE_COMPRESS_BLOCKS:
4181                 return f2fs_release_compress_blocks(filp, arg);
4182         case F2FS_IOC_RESERVE_COMPRESS_BLOCKS:
4183                 return f2fs_reserve_compress_blocks(filp, arg);
4184         case F2FS_IOC_SEC_TRIM_FILE:
4185                 return f2fs_sec_trim_file(filp, arg);
4186         case F2FS_IOC_GET_COMPRESS_OPTION:
4187                 return f2fs_ioc_get_compress_option(filp, arg);
4188         case F2FS_IOC_SET_COMPRESS_OPTION:
4189                 return f2fs_ioc_set_compress_option(filp, arg);
4190         case F2FS_IOC_DECOMPRESS_FILE:
4191                 return f2fs_ioc_decompress_file(filp, arg);
4192         case F2FS_IOC_COMPRESS_FILE:
4193                 return f2fs_ioc_compress_file(filp, arg);
4194         default:
4195                 return -ENOTTY;
4196         }
4197 }
4198
4199 long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
4200 {
4201         if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(filp)))))
4202                 return -EIO;
4203         if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(filp))))
4204                 return -ENOSPC;
4205
4206         return __f2fs_ioctl(filp, cmd, arg);
4207 }
4208
4209 static ssize_t f2fs_file_read_iter(struct kiocb *iocb, struct iov_iter *iter)
4210 {
4211         struct file *file = iocb->ki_filp;
4212         struct inode *inode = file_inode(file);
4213         int ret;
4214
4215         if (!f2fs_is_compress_backend_ready(inode))
4216                 return -EOPNOTSUPP;
4217
4218         ret = generic_file_read_iter(iocb, iter);
4219
4220         if (ret > 0)
4221                 f2fs_update_iostat(F2FS_I_SB(inode), APP_READ_IO, ret);
4222
4223         return ret;
4224 }
4225
4226 static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
4227 {
4228         struct file *file = iocb->ki_filp;
4229         struct inode *inode = file_inode(file);
4230         ssize_t ret;
4231
4232         if (unlikely(f2fs_cp_error(F2FS_I_SB(inode)))) {
4233                 ret = -EIO;
4234                 goto out;
4235         }
4236
4237         if (!f2fs_is_compress_backend_ready(inode)) {
4238                 ret = -EOPNOTSUPP;
4239                 goto out;
4240         }
4241
4242         if (iocb->ki_flags & IOCB_NOWAIT) {
4243                 if (!inode_trylock(inode)) {
4244                         ret = -EAGAIN;
4245                         goto out;
4246                 }
4247         } else {
4248                 inode_lock(inode);
4249         }
4250
4251         if (unlikely(IS_IMMUTABLE(inode))) {
4252                 ret = -EPERM;
4253                 goto unlock;
4254         }
4255
4256         ret = generic_write_checks(iocb, from);
4257         if (ret > 0) {
4258                 bool preallocated = false;
4259                 size_t target_size = 0;
4260                 int err;
4261
4262                 if (iov_iter_fault_in_readable(from, iov_iter_count(from)))
4263                         set_inode_flag(inode, FI_NO_PREALLOC);
4264
4265                 if ((iocb->ki_flags & IOCB_NOWAIT)) {
4266                         if (!f2fs_overwrite_io(inode, iocb->ki_pos,
4267                                                 iov_iter_count(from)) ||
4268                                 f2fs_has_inline_data(inode) ||
4269                                 f2fs_force_buffered_io(inode, iocb, from)) {
4270                                 clear_inode_flag(inode, FI_NO_PREALLOC);
4271                                 inode_unlock(inode);
4272                                 ret = -EAGAIN;
4273                                 goto out;
4274                         }
4275                         goto write;
4276                 }
4277
4278                 if (is_inode_flag_set(inode, FI_NO_PREALLOC))
4279                         goto write;
4280
4281                 if (iocb->ki_flags & IOCB_DIRECT) {
4282                         /*
4283                          * Convert inline data for Direct I/O before entering
4284                          * f2fs_direct_IO().
4285                          */
4286                         err = f2fs_convert_inline_inode(inode);
4287                         if (err)
4288                                 goto out_err;
4289                         /*
4290                          * If force_buffere_io() is true, we have to allocate
4291                          * blocks all the time, since f2fs_direct_IO will fall
4292                          * back to buffered IO.
4293                          */
4294                         if (!f2fs_force_buffered_io(inode, iocb, from) &&
4295                                         allow_outplace_dio(inode, iocb, from))
4296                                 goto write;
4297                 }
4298                 preallocated = true;
4299                 target_size = iocb->ki_pos + iov_iter_count(from);
4300
4301                 err = f2fs_preallocate_blocks(iocb, from);
4302                 if (err) {
4303 out_err:
4304                         clear_inode_flag(inode, FI_NO_PREALLOC);
4305                         inode_unlock(inode);
4306                         ret = err;
4307                         goto out;
4308                 }
4309 write:
4310                 ret = __generic_file_write_iter(iocb, from);
4311                 clear_inode_flag(inode, FI_NO_PREALLOC);
4312
4313                 /* if we couldn't write data, we should deallocate blocks. */
4314                 if (preallocated && i_size_read(inode) < target_size)
4315                         f2fs_truncate(inode);
4316
4317                 if (ret > 0)
4318                         f2fs_update_iostat(F2FS_I_SB(inode), APP_WRITE_IO, ret);
4319         }
4320 unlock:
4321         inode_unlock(inode);
4322 out:
4323         trace_f2fs_file_write_iter(inode, iocb->ki_pos,
4324                                         iov_iter_count(from), ret);
4325         if (ret > 0)
4326                 ret = generic_write_sync(iocb, ret);
4327         return ret;
4328 }
4329
4330 #ifdef CONFIG_COMPAT
4331 struct compat_f2fs_gc_range {
4332         u32 sync;
4333         compat_u64 start;
4334         compat_u64 len;
4335 };
4336 #define F2FS_IOC32_GARBAGE_COLLECT_RANGE        _IOW(F2FS_IOCTL_MAGIC, 11,\
4337                                                 struct compat_f2fs_gc_range)
4338
4339 static int f2fs_compat_ioc_gc_range(struct file *file, unsigned long arg)
4340 {
4341         struct compat_f2fs_gc_range __user *urange;
4342         struct f2fs_gc_range range;
4343         int err;
4344
4345         urange = compat_ptr(arg);
4346         err = get_user(range.sync, &urange->sync);
4347         err |= get_user(range.start, &urange->start);
4348         err |= get_user(range.len, &urange->len);
4349         if (err)
4350                 return -EFAULT;
4351
4352         return __f2fs_ioc_gc_range(file, &range);
4353 }
4354
4355 struct compat_f2fs_move_range {
4356         u32 dst_fd;
4357         compat_u64 pos_in;
4358         compat_u64 pos_out;
4359         compat_u64 len;
4360 };
4361 #define F2FS_IOC32_MOVE_RANGE           _IOWR(F2FS_IOCTL_MAGIC, 9,      \
4362                                         struct compat_f2fs_move_range)
4363
4364 static int f2fs_compat_ioc_move_range(struct file *file, unsigned long arg)
4365 {
4366         struct compat_f2fs_move_range __user *urange;
4367         struct f2fs_move_range range;
4368         int err;
4369
4370         urange = compat_ptr(arg);
4371         err = get_user(range.dst_fd, &urange->dst_fd);
4372         err |= get_user(range.pos_in, &urange->pos_in);
4373         err |= get_user(range.pos_out, &urange->pos_out);
4374         err |= get_user(range.len, &urange->len);
4375         if (err)
4376                 return -EFAULT;
4377
4378         return __f2fs_ioc_move_range(file, &range);
4379 }
4380
4381 long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
4382 {
4383         if (unlikely(f2fs_cp_error(F2FS_I_SB(file_inode(file)))))
4384                 return -EIO;
4385         if (!f2fs_is_checkpoint_ready(F2FS_I_SB(file_inode(file))))
4386                 return -ENOSPC;
4387
4388         switch (cmd) {
4389         case FS_IOC32_GETVERSION:
4390                 cmd = FS_IOC_GETVERSION;
4391                 break;
4392         case F2FS_IOC32_GARBAGE_COLLECT_RANGE:
4393                 return f2fs_compat_ioc_gc_range(file, arg);
4394         case F2FS_IOC32_MOVE_RANGE:
4395                 return f2fs_compat_ioc_move_range(file, arg);
4396         case F2FS_IOC_START_ATOMIC_WRITE:
4397         case F2FS_IOC_COMMIT_ATOMIC_WRITE:
4398         case F2FS_IOC_START_VOLATILE_WRITE:
4399         case F2FS_IOC_RELEASE_VOLATILE_WRITE:
4400         case F2FS_IOC_ABORT_VOLATILE_WRITE:
4401         case F2FS_IOC_SHUTDOWN:
4402         case FITRIM:
4403         case FS_IOC_SET_ENCRYPTION_POLICY:
4404         case FS_IOC_GET_ENCRYPTION_PWSALT:
4405         case FS_IOC_GET_ENCRYPTION_POLICY:
4406         case FS_IOC_GET_ENCRYPTION_POLICY_EX:
4407         case FS_IOC_ADD_ENCRYPTION_KEY:
4408         case FS_IOC_REMOVE_ENCRYPTION_KEY:
4409         case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS:
4410         case FS_IOC_GET_ENCRYPTION_KEY_STATUS:
4411         case FS_IOC_GET_ENCRYPTION_NONCE:
4412         case F2FS_IOC_GARBAGE_COLLECT:
4413         case F2FS_IOC_WRITE_CHECKPOINT:
4414         case F2FS_IOC_DEFRAGMENT:
4415         case F2FS_IOC_FLUSH_DEVICE:
4416         case F2FS_IOC_GET_FEATURES:
4417         case F2FS_IOC_GET_PIN_FILE:
4418         case F2FS_IOC_SET_PIN_FILE:
4419         case F2FS_IOC_PRECACHE_EXTENTS:
4420         case F2FS_IOC_RESIZE_FS:
4421         case FS_IOC_ENABLE_VERITY:
4422         case FS_IOC_MEASURE_VERITY:
4423         case FS_IOC_READ_VERITY_METADATA:
4424         case FS_IOC_GETFSLABEL:
4425         case FS_IOC_SETFSLABEL:
4426         case F2FS_IOC_GET_COMPRESS_BLOCKS:
4427         case F2FS_IOC_RELEASE_COMPRESS_BLOCKS:
4428         case F2FS_IOC_RESERVE_COMPRESS_BLOCKS:
4429         case F2FS_IOC_SEC_TRIM_FILE:
4430         case F2FS_IOC_GET_COMPRESS_OPTION:
4431         case F2FS_IOC_SET_COMPRESS_OPTION:
4432         case F2FS_IOC_DECOMPRESS_FILE:
4433         case F2FS_IOC_COMPRESS_FILE:
4434                 break;
4435         default:
4436                 return -ENOIOCTLCMD;
4437         }
4438         return __f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
4439 }
4440 #endif
4441
4442 const struct file_operations f2fs_file_operations = {
4443         .llseek         = f2fs_llseek,
4444         .read_iter      = f2fs_file_read_iter,
4445         .write_iter     = f2fs_file_write_iter,
4446         .open           = f2fs_file_open,
4447         .release        = f2fs_release_file,
4448         .mmap           = f2fs_file_mmap,
4449         .flush          = f2fs_file_flush,
4450         .fsync          = f2fs_sync_file,
4451         .fallocate      = f2fs_fallocate,
4452         .unlocked_ioctl = f2fs_ioctl,
4453 #ifdef CONFIG_COMPAT
4454         .compat_ioctl   = f2fs_compat_ioctl,
4455 #endif
4456         .splice_read    = generic_file_splice_read,
4457         .splice_write   = iter_file_splice_write,
4458 };