fs/f2fs/inode.c

   1 /*
   2  * fs/f2fs/inode.c
   3  *
   4  * Copyright (c) 2012 Samsung Electronics Co., Ltd.
   5  *             http://www.samsung.com/
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11 #include <linux/fs.h>
  12 #include <linux/f2fs_fs.h>
  13 #include <linux/buffer_head.h>
  14 #include <linux/backing-dev.h>
  15 #include <linux/writeback.h>
  16
  17 #include "f2fs.h"
  18 #include "node.h"
  19 #include "segment.h"
  20
  21 #include <trace/events/f2fs.h>
  22
  23 void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync)
  24 {
  25         if (is_inode_flag_set(inode, FI_NEW_INODE))
  26                 return;
  27
  28         if (f2fs_inode_dirtied(inode, sync))
  29                 return;
  30
  31         mark_inode_dirty_sync(inode);
  32 }
  33
  34 void f2fs_set_inode_flags(struct inode *inode)
  35 {
  36         unsigned int flags = F2FS_I(inode)->i_flags;
  37         unsigned int new_fl = 0;
  38
  39         if (flags & FS_SYNC_FL)
  40                 new_fl |= S_SYNC;
  41         if (flags & FS_APPEND_FL)
  42                 new_fl |= S_APPEND;
  43         if (flags & FS_IMMUTABLE_FL)
  44                 new_fl |= S_IMMUTABLE;
  45         if (flags & FS_NOATIME_FL)
  46                 new_fl |= S_NOATIME;
  47         if (flags & FS_DIRSYNC_FL)
  48                 new_fl |= S_DIRSYNC;
  49         if (f2fs_encrypted_inode(inode))
  50                 new_fl |= S_ENCRYPTED;
  51         inode_set_flags(inode, new_fl,
  52                         S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|
  53                         S_ENCRYPTED);
  54 }
  55
  56 static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
  57 {
  58         int extra_size = get_extra_isize(inode);
  59
  60         if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
  61                         S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
  62                 if (ri->i_addr[extra_size])
  63                         inode->i_rdev = old_decode_dev(
  64                                 le32_to_cpu(ri->i_addr[extra_size]));
  65                 else
  66                         inode->i_rdev = new_decode_dev(
  67                                 le32_to_cpu(ri->i_addr[extra_size + 1]));
  68         }
  69 }
  70
  71 static bool __written_first_block(struct f2fs_inode *ri)
  72 {
  73         block_t addr = le32_to_cpu(ri->i_addr[offset_in_addr(ri)]);
  74
  75         if (addr != NEW_ADDR && addr != NULL_ADDR)
  76                 return true;
  77         return false;
  78 }
  79
  80 static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
  81 {
  82         int extra_size = get_extra_isize(inode);
  83
  84         if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
  85                 if (old_valid_dev(inode->i_rdev)) {
  86                         ri->i_addr[extra_size] =
  87                                 cpu_to_le32(old_encode_dev(inode->i_rdev));
  88                         ri->i_addr[extra_size + 1] = 0;
  89                 } else {
  90                         ri->i_addr[extra_size] = 0;
  91                         ri->i_addr[extra_size + 1] =
  92                                 cpu_to_le32(new_encode_dev(inode->i_rdev));
  93                         ri->i_addr[extra_size + 2] = 0;
  94                 }
  95         }
  96 }
  97
  98 static void __recover_inline_status(struct inode *inode, struct page *ipage)
  99 {
 100         void *inline_data = inline_data_addr(inode, ipage);
 101         __le32 *start = inline_data;
 102         __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32);
 103
 104         while (start < end) {
 105                 if (*start++) {
 106                         f2fs_wait_on_page_writeback(ipage, NODE, true);
 107
 108                         set_inode_flag(inode, FI_DATA_EXIST);
 109                         set_raw_inline(inode, F2FS_INODE(ipage));
 110                         set_page_dirty(ipage);
 111                         return;
 112                 }
 113         }
 114         return;
 115 }
 116
 117 static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
 118 {
 119         struct f2fs_inode *ri = &F2FS_NODE(page)->i;
 120         int extra_isize = le32_to_cpu(ri->i_extra_isize);
 121
 122         if (!f2fs_sb_has_inode_chksum(sbi->sb))
 123                 return false;
 124
 125         if (!RAW_IS_INODE(F2FS_NODE(page)) || !(ri->i_inline & F2FS_EXTRA_ATTR))
 126                 return false;
 127
 128         if (!F2FS_FITS_IN_INODE(ri, extra_isize, i_inode_checksum))
 129                 return false;
 130
 131         return true;
 132 }
 133
 134 static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
 135 {
 136         struct f2fs_node *node = F2FS_NODE(page);
 137         struct f2fs_inode *ri = &node->i;
 138         __le32 ino = node->footer.ino;
 139         __le32 gen = ri->i_generation;
 140         __u32 chksum, chksum_seed;
 141         __u32 dummy_cs = 0;
 142         unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum);
 143         unsigned int cs_size = sizeof(dummy_cs);
 144
 145         chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino,
 146                                                         sizeof(ino));
 147         chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen));
 148
 149         chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset);
 150         chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size);
 151         offset += cs_size;
 152         chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset,
 153                                                 F2FS_BLKSIZE - offset);
 154         return chksum;
 155 }
 156
 157 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page)
 158 {
 159         struct f2fs_inode *ri;
 160         __u32 provided, calculated;
 161
 162         if (!f2fs_enable_inode_chksum(sbi, page) ||
 163                         PageDirty(page) || PageWriteback(page))
 164                 return true;
 165
 166         ri = &F2FS_NODE(page)->i;
 167         provided = le32_to_cpu(ri->i_inode_checksum);
 168         calculated = f2fs_inode_chksum(sbi, page);
 169
 170         if (provided != calculated)
 171                 f2fs_msg(sbi->sb, KERN_WARNING,
 172                         "checksum invalid, ino = %x, %x vs. %x",
 173                         ino_of_node(page), provided, calculated);
 174
 175         return provided == calculated;
 176 }
 177
 178 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page)
 179 {
 180         struct f2fs_inode *ri = &F2FS_NODE(page)->i;
 181
 182         if (!f2fs_enable_inode_chksum(sbi, page))
 183                 return;
 184
 185         ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page));
 186 }
 187
 188 static int do_read_inode(struct inode *inode)
 189 {
 190         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 191         struct f2fs_inode_info *fi = F2FS_I(inode);
 192         struct page *node_page;
 193         struct f2fs_inode *ri;
 194         projid_t i_projid;
 195
 196         /* Check if ino is within scope */
 197         if (check_nid_range(sbi, inode->i_ino)) {
 198                 f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu",
 199                          (unsigned long) inode->i_ino);
 200                 WARN_ON(1);
 201                 return -EINVAL;
 202         }
 203
 204         node_page = get_node_page(sbi, inode->i_ino);
 205         if (IS_ERR(node_page))
 206                 return PTR_ERR(node_page);
 207
 208         ri = F2FS_INODE(node_page);
 209
 210         inode->i_mode = le16_to_cpu(ri->i_mode);
 211         i_uid_write(inode, le32_to_cpu(ri->i_uid));
 212         i_gid_write(inode, le32_to_cpu(ri->i_gid));
 213         set_nlink(inode, le32_to_cpu(ri->i_links));
 214         inode->i_size = le64_to_cpu(ri->i_size);
 215         inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
 216
 217         inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
 218         inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
 219         inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
 220         inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
 221         inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
 222         inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
 223         inode->i_generation = le32_to_cpu(ri->i_generation);
 224
 225         fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
 226         fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
 227         fi->i_flags = le32_to_cpu(ri->i_flags);
 228         fi->flags = 0;
 229         fi->i_advise = ri->i_advise;
 230         fi->i_pino = le32_to_cpu(ri->i_pino);
 231         fi->i_dir_level = ri->i_dir_level;
 232
 233         if (f2fs_init_extent_tree(inode, &ri->i_ext))
 234                 set_page_dirty(node_page);
 235
 236         get_inline_info(inode, ri);
 237
 238         fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
 239                                         le16_to_cpu(ri->i_extra_isize) : 0;
 240
 241         if (f2fs_sb_has_flexible_inline_xattr(sbi->sb)) {
 242                 f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode));
 243                 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
 244         } else if (f2fs_has_inline_xattr(inode) ||
 245                                 f2fs_has_inline_dentry(inode)) {
 246                 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
 247         } else {
 248
 249                 /*
 250                  * Previous inline data or directory always reserved 200 bytes
 251                  * in inode layout, even if inline_xattr is disabled. In order
 252                  * to keep inline_dentry's structure for backward compatibility,
 253                  * we get the space back only from inline_data.
 254                  */
 255                 fi->i_inline_xattr_size = 0;
 256         }
 257
 258         /* check data exist */
 259         if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
 260                 __recover_inline_status(inode, node_page);
 261
 262         /* get rdev by using inline_info */
 263         __get_inode_rdev(inode, ri);
 264
 265         if (__written_first_block(ri))
 266                 set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
 267
 268         if (!need_inode_block_update(sbi, inode->i_ino))
 269                 fi->last_disk_size = inode->i_size;
 270
 271         if (fi->i_flags & FS_PROJINHERIT_FL)
 272                 set_inode_flag(inode, FI_PROJ_INHERIT);
 273
 274         if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi->sb) &&
 275                         F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
 276                 i_projid = (projid_t)le32_to_cpu(ri->i_projid);
 277         else
 278                 i_projid = F2FS_DEF_PROJID;
 279         fi->i_projid = make_kprojid(&init_user_ns, i_projid);
 280
 281         if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi->sb) &&
 282                         F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
 283                 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
 284                 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
 285         }
 286
 287         F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
 288         F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
 289         F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
 290         F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
 291         f2fs_put_page(node_page, 1);
 292
 293         stat_inc_inline_xattr(inode);
 294         stat_inc_inline_inode(inode);
 295         stat_inc_inline_dir(inode);
 296
 297         return 0;
 298 }
 299
 300 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
 301 {
 302         struct f2fs_sb_info *sbi = F2FS_SB(sb);
 303         struct inode *inode;
 304         int ret = 0;
 305
 306         inode = iget_locked(sb, ino);
 307         if (!inode)
 308                 return ERR_PTR(-ENOMEM);
 309
 310         if (!(inode->i_state & I_NEW)) {
 311                 trace_f2fs_iget(inode);
 312                 return inode;
 313         }
 314         if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
 315                 goto make_now;
 316
 317         ret = do_read_inode(inode);
 318         if (ret)
 319                 goto bad_inode;
 320 make_now:
 321         if (ino == F2FS_NODE_INO(sbi)) {
 322                 inode->i_mapping->a_ops = &f2fs_node_aops;
 323                 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
 324         } else if (ino == F2FS_META_INO(sbi)) {
 325                 inode->i_mapping->a_ops = &f2fs_meta_aops;
 326                 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO);
 327         } else if (S_ISREG(inode->i_mode)) {
 328                 inode->i_op = &f2fs_file_inode_operations;
 329                 inode->i_fop = &f2fs_file_operations;
 330                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
 331         } else if (S_ISDIR(inode->i_mode)) {
 332                 inode->i_op = &f2fs_dir_inode_operations;
 333                 inode->i_fop = &f2fs_dir_operations;
 334                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
 335                 inode_nohighmem(inode);
 336         } else if (S_ISLNK(inode->i_mode)) {
 337                 if (f2fs_encrypted_inode(inode))
 338                         inode->i_op = &f2fs_encrypted_symlink_inode_operations;
 339                 else
 340                         inode->i_op = &f2fs_symlink_inode_operations;
 341                 inode_nohighmem(inode);
 342                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
 343         } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
 344                         S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
 345                 inode->i_op = &f2fs_special_inode_operations;
 346                 init_special_inode(inode, inode->i_mode, inode->i_rdev);
 347         } else {
 348                 ret = -EIO;
 349                 goto bad_inode;
 350         }
 351         f2fs_set_inode_flags(inode);
 352         unlock_new_inode(inode);
 353         trace_f2fs_iget(inode);
 354         return inode;
 355
 356 bad_inode:
 357         iget_failed(inode);
 358         trace_f2fs_iget_exit(inode, ret);
 359         return ERR_PTR(ret);
 360 }
 361
 362 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
 363 {
 364         struct inode *inode;
 365 retry:
 366         inode = f2fs_iget(sb, ino);
 367         if (IS_ERR(inode)) {
 368                 if (PTR_ERR(inode) == -ENOMEM) {
 369                         congestion_wait(BLK_RW_ASYNC, HZ/50);
 370                         goto retry;
 371                 }
 372         }
 373         return inode;
 374 }
 375
 376 void update_inode(struct inode *inode, struct page *node_page)
 377 {
 378         struct f2fs_inode *ri;
 379         struct extent_tree *et = F2FS_I(inode)->extent_tree;
 380
 381         f2fs_wait_on_page_writeback(node_page, NODE, true);
 382         set_page_dirty(node_page);
 383
 384         f2fs_inode_synced(inode);
 385
 386         ri = F2FS_INODE(node_page);
 387
 388         ri->i_mode = cpu_to_le16(inode->i_mode);
 389         ri->i_advise = F2FS_I(inode)->i_advise;
 390         ri->i_uid = cpu_to_le32(i_uid_read(inode));
 391         ri->i_gid = cpu_to_le32(i_gid_read(inode));
 392         ri->i_links = cpu_to_le32(inode->i_nlink);
 393         ri->i_size = cpu_to_le64(i_size_read(inode));
 394         ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
 395
 396         if (et) {
 397                 read_lock(&et->lock);
 398                 set_raw_extent(&et->largest, &ri->i_ext);
 399                 read_unlock(&et->lock);
 400         } else {
 401                 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
 402         }
 403         set_raw_inline(inode, ri);
 404
 405         ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
 406         ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
 407         ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
 408         ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
 409         ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
 410         ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
 411         ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth);
 412         ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
 413         ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
 414         ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
 415         ri->i_generation = cpu_to_le32(inode->i_generation);
 416         ri->i_dir_level = F2FS_I(inode)->i_dir_level;
 417
 418         if (f2fs_has_extra_attr(inode)) {
 419                 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize);
 420
 421                 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)->sb))
 422                         ri->i_inline_xattr_size =
 423                                 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size);
 424
 425                 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)->sb) &&
 426                         F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
 427                                                                 i_projid)) {
 428                         projid_t i_projid;
 429
 430                         i_projid = from_kprojid(&init_user_ns,
 431                                                 F2FS_I(inode)->i_projid);
 432                         ri->i_projid = cpu_to_le32(i_projid);
 433                 }
 434
 435                 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)->sb) &&
 436                         F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
 437                                                                 i_crtime)) {
 438                         ri->i_crtime =
 439                                 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec);
 440                         ri->i_crtime_nsec =
 441                                 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec);
 442                 }
 443         }
 444
 445         __set_inode_rdev(inode, ri);
 446
 447         /* deleted inode */
 448         if (inode->i_nlink == 0)
 449                 clear_inline_node(node_page);
 450
 451         F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
 452         F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
 453         F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
 454         F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
 455 }
 456
 457 void update_inode_page(struct inode *inode)
 458 {
 459         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 460         struct page *node_page;
 461 retry:
 462         node_page = get_node_page(sbi, inode->i_ino);
 463         if (IS_ERR(node_page)) {
 464                 int err = PTR_ERR(node_page);
 465                 if (err == -ENOMEM) {
 466                         cond_resched();
 467                         goto retry;
 468                 } else if (err != -ENOENT) {
 469                         f2fs_stop_checkpoint(sbi, false);
 470                 }
 471                 return;
 472         }
 473         update_inode(inode, node_page);
 474         f2fs_put_page(node_page, 1);
 475 }
 476
 477 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
 478 {
 479         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 480
 481         if (inode->i_ino == F2FS_NODE_INO(sbi) ||
 482                         inode->i_ino == F2FS_META_INO(sbi))
 483                 return 0;
 484
 485         if (!is_inode_flag_set(inode, FI_DIRTY_INODE))
 486                 return 0;
 487
 488         /*
 489          * We need to balance fs here to prevent from producing dirty node pages
 490          * during the urgent cleaning time when runing out of free sections.
 491          */
 492         update_inode_page(inode);
 493         if (wbc && wbc->nr_to_write)
 494                 f2fs_balance_fs(sbi, true);
 495         return 0;
 496 }
 497
 498 /*
 499  * Called at the last iput() if i_nlink is zero
 500  */
 501 void f2fs_evict_inode(struct inode *inode)
 502 {
 503         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 504         nid_t xnid = F2FS_I(inode)->i_xattr_nid;
 505         int err = 0;
 506
 507         /* some remained atomic pages should discarded */
 508         if (f2fs_is_atomic_file(inode))
 509                 drop_inmem_pages(inode);
 510
 511         trace_f2fs_evict_inode(inode);
 512         truncate_inode_pages_final(&inode->i_data);
 513
 514         if (inode->i_ino == F2FS_NODE_INO(sbi) ||
 515                         inode->i_ino == F2FS_META_INO(sbi))
 516                 goto out_clear;
 517
 518         f2fs_bug_on(sbi, get_dirty_pages(inode));
 519         remove_dirty_inode(inode);
 520
 521         f2fs_destroy_extent_tree(inode);
 522
 523         if (inode->i_nlink || is_bad_inode(inode))
 524                 goto no_delete;
 525
 526         dquot_initialize(inode);
 527
 528         remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
 529         remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
 530         remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);
 531
 532         sb_start_intwrite(inode->i_sb);
 533         set_inode_flag(inode, FI_NO_ALLOC);
 534         i_size_write(inode, 0);
 535 retry:
 536         if (F2FS_HAS_BLOCKS(inode))
 537                 err = f2fs_truncate(inode);
 538
 539 #ifdef CONFIG_F2FS_FAULT_INJECTION
 540         if (time_to_inject(sbi, FAULT_EVICT_INODE)) {
 541                 f2fs_show_injection_info(FAULT_EVICT_INODE);
 542                 err = -EIO;
 543         }
 544 #endif
 545         if (!err) {
 546                 f2fs_lock_op(sbi);
 547                 err = remove_inode_page(inode);
 548                 f2fs_unlock_op(sbi);
 549                 if (err == -ENOENT)
 550                         err = 0;
 551         }
 552
 553         /* give more chances, if ENOMEM case */
 554         if (err == -ENOMEM) {
 555                 err = 0;
 556                 goto retry;
 557         }
 558
 559         if (err)
 560                 update_inode_page(inode);
 561         dquot_free_inode(inode);
 562         sb_end_intwrite(inode->i_sb);
 563 no_delete:
 564         dquot_drop(inode);
 565
 566         stat_dec_inline_xattr(inode);
 567         stat_dec_inline_dir(inode);
 568         stat_dec_inline_inode(inode);
 569
 570         if (likely(!is_set_ckpt_flags(sbi, CP_ERROR_FLAG)))
 571                 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
 572         else
 573                 f2fs_inode_synced(inode);
 574
 575         /* ino == 0, if f2fs_new_inode() was failed t*/
 576         if (inode->i_ino)
 577                 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
 578                                                         inode->i_ino);
 579         if (xnid)
 580                 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
 581         if (inode->i_nlink) {
 582                 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
 583                         add_ino_entry(sbi, inode->i_ino, APPEND_INO);
 584                 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
 585                         add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
 586         }
 587         if (is_inode_flag_set(inode, FI_FREE_NID)) {
 588                 alloc_nid_failed(sbi, inode->i_ino);
 589                 clear_inode_flag(inode, FI_FREE_NID);
 590         } else {
 591                 f2fs_bug_on(sbi, err &&
 592                         !exist_written_data(sbi, inode->i_ino, ORPHAN_INO));
 593         }
 594 out_clear:
 595         fscrypt_put_encryption_info(inode);
 596         clear_inode(inode);
 597 }
 598
 599 /* caller should call f2fs_lock_op() */
 600 void handle_failed_inode(struct inode *inode)
 601 {
 602         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 603         struct node_info ni;
 604
 605         /*
 606          * clear nlink of inode in order to release resource of inode
 607          * immediately.
 608          */
 609         clear_nlink(inode);
 610
 611         /*
 612          * we must call this to avoid inode being remained as dirty, resulting
 613          * in a panic when flushing dirty inodes in gdirty_list.
 614          */
 615         update_inode_page(inode);
 616         f2fs_inode_synced(inode);
 617
 618         /* don't make bad inode, since it becomes a regular file. */
 619         unlock_new_inode(inode);
 620
 621         /*
 622          * Note: we should add inode to orphan list before f2fs_unlock_op()
 623          * so we can prevent losing this orphan when encoutering checkpoint
 624          * and following suddenly power-off.
 625          */
 626         get_node_info(sbi, inode->i_ino, &ni);
 627
 628         if (ni.blk_addr != NULL_ADDR) {
 629                 int err = acquire_orphan_inode(sbi);
 630                 if (err) {
 631                         set_sbi_flag(sbi, SBI_NEED_FSCK);
 632                         f2fs_msg(sbi->sb, KERN_WARNING,
 633                                 "Too many orphan inodes, run fsck to fix.");
 634                 } else {
 635                         add_orphan_inode(inode);
 636                 }
 637                 alloc_nid_done(sbi, inode->i_ino);
 638         } else {
 639                 set_inode_flag(inode, FI_FREE_NID);
 640         }
 641
 642         f2fs_unlock_op(sbi);
 643
 644         /* iput will drop the inode object */
 645         iput(inode);
 646 }