4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
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.
12 #include <linux/f2fs_fs.h>
13 #include <linux/stat.h>
14 #include <linux/buffer_head.h>
15 #include <linux/writeback.h>
16 #include <linux/blkdev.h>
17 #include <linux/falloc.h>
18 #include <linux/types.h>
19 #include <linux/compat.h>
20 #include <linux/uaccess.h>
21 #include <linux/mount.h>
22 #include <linux/pagevec.h>
23 #include <linux/uio.h>
24 #include <linux/uuid.h>
25 #include <linux/file.h>
34 #include <trace/events/f2fs.h>
36 static int f2fs_filemap_fault(struct vm_fault *vmf)
38 struct inode *inode = file_inode(vmf->vma->vm_file);
41 down_read(&F2FS_I(inode)->i_mmap_sem);
42 err = filemap_fault(vmf);
43 up_read(&F2FS_I(inode)->i_mmap_sem);
48 static int f2fs_vm_page_mkwrite(struct vm_fault *vmf)
50 struct page *page = vmf->page;
51 struct inode *inode = file_inode(vmf->vma->vm_file);
52 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
53 struct dnode_of_data dn;
56 sb_start_pagefault(inode->i_sb);
58 f2fs_bug_on(sbi, f2fs_has_inline_data(inode));
60 /* block allocation */
62 set_new_dnode(&dn, inode, NULL, NULL, 0);
63 err = f2fs_reserve_block(&dn, page->index);
71 f2fs_balance_fs(sbi, dn.node_changed);
73 file_update_time(vmf->vma->vm_file);
74 down_read(&F2FS_I(inode)->i_mmap_sem);
76 if (unlikely(page->mapping != inode->i_mapping ||
77 page_offset(page) > i_size_read(inode) ||
78 !PageUptodate(page))) {
85 * check to see if the page is mapped already (no holes)
87 if (PageMappedToDisk(page))
90 /* page is wholly or partially inside EOF */
91 if (((loff_t)(page->index + 1) << PAGE_SHIFT) >
94 offset = i_size_read(inode) & ~PAGE_MASK;
95 zero_user_segment(page, offset, PAGE_SIZE);
98 if (!PageUptodate(page))
99 SetPageUptodate(page);
101 trace_f2fs_vm_page_mkwrite(page, DATA);
104 f2fs_wait_on_page_writeback(page, DATA, false);
106 /* wait for GCed encrypted page writeback */
107 if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode))
108 f2fs_wait_on_encrypted_page_writeback(sbi, dn.data_blkaddr);
111 up_read(&F2FS_I(inode)->i_mmap_sem);
113 sb_end_pagefault(inode->i_sb);
114 f2fs_update_time(sbi, REQ_TIME);
115 return block_page_mkwrite_return(err);
118 static const struct vm_operations_struct f2fs_file_vm_ops = {
119 .fault = f2fs_filemap_fault,
120 .map_pages = filemap_map_pages,
121 .page_mkwrite = f2fs_vm_page_mkwrite,
124 static int get_parent_ino(struct inode *inode, nid_t *pino)
126 struct dentry *dentry;
128 inode = igrab(inode);
129 dentry = d_find_any_alias(inode);
134 *pino = parent_ino(dentry);
139 static inline bool need_do_checkpoint(struct inode *inode)
141 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
142 bool need_cp = false;
144 if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1)
146 else if (is_sbi_flag_set(sbi, SBI_NEED_CP))
148 else if (file_wrong_pino(inode))
150 else if (!space_for_roll_forward(sbi))
152 else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino))
154 else if (test_opt(sbi, FASTBOOT))
156 else if (sbi->active_logs == 2)
162 static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino)
164 struct page *i = find_get_page(NODE_MAPPING(sbi), ino);
166 /* But we need to avoid that there are some inode updates */
167 if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino))
173 static void try_to_fix_pino(struct inode *inode)
175 struct f2fs_inode_info *fi = F2FS_I(inode);
178 down_write(&fi->i_sem);
179 if (file_wrong_pino(inode) && inode->i_nlink == 1 &&
180 get_parent_ino(inode, &pino)) {
181 f2fs_i_pino_write(inode, pino);
182 file_got_pino(inode);
184 up_write(&fi->i_sem);
187 static int f2fs_do_sync_file(struct file *file, loff_t start, loff_t end,
188 int datasync, bool atomic)
190 struct inode *inode = file->f_mapping->host;
191 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
192 nid_t ino = inode->i_ino;
194 bool need_cp = false;
195 struct writeback_control wbc = {
196 .sync_mode = WB_SYNC_ALL,
197 .nr_to_write = LONG_MAX,
201 if (unlikely(f2fs_readonly(inode->i_sb)))
204 trace_f2fs_sync_file_enter(inode);
206 /* if fdatasync is triggered, let's do in-place-update */
207 if (datasync || get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks)
208 set_inode_flag(inode, FI_NEED_IPU);
209 ret = filemap_write_and_wait_range(inode->i_mapping, start, end);
210 clear_inode_flag(inode, FI_NEED_IPU);
213 trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret);
217 /* if the inode is dirty, let's recover all the time */
218 if (!f2fs_skip_inode_update(inode, datasync)) {
219 f2fs_write_inode(inode, NULL);
224 * if there is no written data, don't waste time to write recovery info.
226 if (!is_inode_flag_set(inode, FI_APPEND_WRITE) &&
227 !exist_written_data(sbi, ino, APPEND_INO)) {
229 /* it may call write_inode just prior to fsync */
230 if (need_inode_page_update(sbi, ino))
233 if (is_inode_flag_set(inode, FI_UPDATE_WRITE) ||
234 exist_written_data(sbi, ino, UPDATE_INO))
240 * Both of fdatasync() and fsync() are able to be recovered from
243 down_read(&F2FS_I(inode)->i_sem);
244 need_cp = need_do_checkpoint(inode);
245 up_read(&F2FS_I(inode)->i_sem);
248 /* all the dirty node pages should be flushed for POR */
249 ret = f2fs_sync_fs(inode->i_sb, 1);
252 * We've secured consistency through sync_fs. Following pino
253 * will be used only for fsynced inodes after checkpoint.
255 try_to_fix_pino(inode);
256 clear_inode_flag(inode, FI_APPEND_WRITE);
257 clear_inode_flag(inode, FI_UPDATE_WRITE);
261 ret = fsync_node_pages(sbi, inode, &wbc, atomic);
265 /* if cp_error was enabled, we should avoid infinite loop */
266 if (unlikely(f2fs_cp_error(sbi))) {
271 if (need_inode_block_update(sbi, ino)) {
272 f2fs_mark_inode_dirty_sync(inode, true);
273 f2fs_write_inode(inode, NULL);
278 * If it's atomic_write, it's just fine to keep write ordering. So
279 * here we don't need to wait for node write completion, since we use
280 * node chain which serializes node blocks. If one of node writes are
281 * reordered, we can see simply broken chain, resulting in stopping
282 * roll-forward recovery. It means we'll recover all or none node blocks
286 ret = wait_on_node_pages_writeback(sbi, ino);
291 /* once recovery info is written, don't need to tack this */
292 remove_ino_entry(sbi, ino, APPEND_INO);
293 clear_inode_flag(inode, FI_APPEND_WRITE);
295 remove_ino_entry(sbi, ino, UPDATE_INO);
296 clear_inode_flag(inode, FI_UPDATE_WRITE);
298 ret = f2fs_issue_flush(sbi);
299 f2fs_update_time(sbi, REQ_TIME);
301 trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret);
302 f2fs_trace_ios(NULL, 1);
306 int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
308 return f2fs_do_sync_file(file, start, end, datasync, false);
311 static pgoff_t __get_first_dirty_index(struct address_space *mapping,
312 pgoff_t pgofs, int whence)
317 if (whence != SEEK_DATA)
320 /* find first dirty page index */
321 pagevec_init(&pvec, 0);
322 nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs,
323 PAGECACHE_TAG_DIRTY, 1);
324 pgofs = nr_pages ? pvec.pages[0]->index : ULONG_MAX;
325 pagevec_release(&pvec);
329 static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs,
334 if ((blkaddr == NEW_ADDR && dirty == pgofs) ||
335 (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR))
339 if (blkaddr == NULL_ADDR)
346 static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence)
348 struct inode *inode = file->f_mapping->host;
349 loff_t maxbytes = inode->i_sb->s_maxbytes;
350 struct dnode_of_data dn;
351 pgoff_t pgofs, end_offset, dirty;
352 loff_t data_ofs = offset;
358 isize = i_size_read(inode);
362 /* handle inline data case */
363 if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) {
364 if (whence == SEEK_HOLE)
369 pgofs = (pgoff_t)(offset >> PAGE_SHIFT);
371 dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence);
373 for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
374 set_new_dnode(&dn, inode, NULL, NULL, 0);
375 err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE);
376 if (err && err != -ENOENT) {
378 } else if (err == -ENOENT) {
379 /* direct node does not exists */
380 if (whence == SEEK_DATA) {
381 pgofs = get_next_page_offset(&dn, pgofs);
388 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
390 /* find data/hole in dnode block */
391 for (; dn.ofs_in_node < end_offset;
392 dn.ofs_in_node++, pgofs++,
393 data_ofs = (loff_t)pgofs << PAGE_SHIFT) {
395 blkaddr = datablock_addr(dn.inode,
396 dn.node_page, dn.ofs_in_node);
398 if (__found_offset(blkaddr, dirty, pgofs, whence)) {
406 if (whence == SEEK_DATA)
409 if (whence == SEEK_HOLE && data_ofs > isize)
412 return vfs_setpos(file, data_ofs, maxbytes);
418 static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence)
420 struct inode *inode = file->f_mapping->host;
421 loff_t maxbytes = inode->i_sb->s_maxbytes;
427 return generic_file_llseek_size(file, offset, whence,
428 maxbytes, i_size_read(inode));
433 return f2fs_seek_block(file, offset, whence);
439 static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma)
441 struct inode *inode = file_inode(file);
444 /* we don't need to use inline_data strictly */
445 err = f2fs_convert_inline_inode(inode);
450 vma->vm_ops = &f2fs_file_vm_ops;
454 static int f2fs_file_open(struct inode *inode, struct file *filp)
458 if (f2fs_encrypted_inode(inode)) {
459 int ret = fscrypt_get_encryption_info(inode);
462 if (!fscrypt_has_encryption_key(inode))
465 dir = dget_parent(file_dentry(filp));
466 if (f2fs_encrypted_inode(d_inode(dir)) &&
467 !fscrypt_has_permitted_context(d_inode(dir), inode)) {
472 return dquot_file_open(inode, filp);
475 int truncate_data_blocks_range(struct dnode_of_data *dn, int count)
477 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
478 struct f2fs_node *raw_node;
479 int nr_free = 0, ofs = dn->ofs_in_node, len = count;
483 if (IS_INODE(dn->node_page) && f2fs_has_extra_attr(dn->inode))
484 base = get_extra_isize(dn->inode);
486 raw_node = F2FS_NODE(dn->node_page);
487 addr = blkaddr_in_node(raw_node) + base + ofs;
489 for (; count > 0; count--, addr++, dn->ofs_in_node++) {
490 block_t blkaddr = le32_to_cpu(*addr);
491 if (blkaddr == NULL_ADDR)
494 dn->data_blkaddr = NULL_ADDR;
495 set_data_blkaddr(dn);
496 invalidate_blocks(sbi, blkaddr);
497 if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page))
498 clear_inode_flag(dn->inode, FI_FIRST_BLOCK_WRITTEN);
505 * once we invalidate valid blkaddr in range [ofs, ofs + count],
506 * we will invalidate all blkaddr in the whole range.
508 fofs = start_bidx_of_node(ofs_of_node(dn->node_page),
510 f2fs_update_extent_cache_range(dn, fofs, 0, len);
511 dec_valid_block_count(sbi, dn->inode, nr_free);
513 dn->ofs_in_node = ofs;
515 f2fs_update_time(sbi, REQ_TIME);
516 trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
517 dn->ofs_in_node, nr_free);
521 void truncate_data_blocks(struct dnode_of_data *dn)
523 truncate_data_blocks_range(dn, ADDRS_PER_BLOCK);
526 static int truncate_partial_data_page(struct inode *inode, u64 from,
529 unsigned offset = from & (PAGE_SIZE - 1);
530 pgoff_t index = from >> PAGE_SHIFT;
531 struct address_space *mapping = inode->i_mapping;
534 if (!offset && !cache_only)
538 page = find_lock_page(mapping, index);
539 if (page && PageUptodate(page))
541 f2fs_put_page(page, 1);
545 page = get_lock_data_page(inode, index, true);
547 return PTR_ERR(page) == -ENOENT ? 0 : PTR_ERR(page);
549 f2fs_wait_on_page_writeback(page, DATA, true);
550 zero_user(page, offset, PAGE_SIZE - offset);
552 /* An encrypted inode should have a key and truncate the last page. */
553 f2fs_bug_on(F2FS_I_SB(inode), cache_only && f2fs_encrypted_inode(inode));
555 set_page_dirty(page);
556 f2fs_put_page(page, 1);
560 int truncate_blocks(struct inode *inode, u64 from, bool lock)
562 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
563 unsigned int blocksize = inode->i_sb->s_blocksize;
564 struct dnode_of_data dn;
566 int count = 0, err = 0;
568 bool truncate_page = false;
570 trace_f2fs_truncate_blocks_enter(inode, from);
572 free_from = (pgoff_t)F2FS_BYTES_TO_BLK(from + blocksize - 1);
574 if (free_from >= sbi->max_file_blocks)
580 ipage = get_node_page(sbi, inode->i_ino);
582 err = PTR_ERR(ipage);
586 if (f2fs_has_inline_data(inode)) {
587 truncate_inline_inode(inode, ipage, from);
588 f2fs_put_page(ipage, 1);
589 truncate_page = true;
593 set_new_dnode(&dn, inode, ipage, NULL, 0);
594 err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE_RA);
601 count = ADDRS_PER_PAGE(dn.node_page, inode);
603 count -= dn.ofs_in_node;
604 f2fs_bug_on(sbi, count < 0);
606 if (dn.ofs_in_node || IS_INODE(dn.node_page)) {
607 truncate_data_blocks_range(&dn, count);
613 err = truncate_inode_blocks(inode, free_from);
618 /* lastly zero out the first data page */
620 err = truncate_partial_data_page(inode, from, truncate_page);
622 trace_f2fs_truncate_blocks_exit(inode, err);
626 int f2fs_truncate(struct inode *inode)
630 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
631 S_ISLNK(inode->i_mode)))
634 trace_f2fs_truncate(inode);
636 #ifdef CONFIG_F2FS_FAULT_INJECTION
637 if (time_to_inject(F2FS_I_SB(inode), FAULT_TRUNCATE)) {
638 f2fs_show_injection_info(FAULT_TRUNCATE);
642 /* we should check inline_data size */
643 if (!f2fs_may_inline_data(inode)) {
644 err = f2fs_convert_inline_inode(inode);
649 err = truncate_blocks(inode, i_size_read(inode), true);
653 inode->i_mtime = inode->i_ctime = current_time(inode);
654 f2fs_mark_inode_dirty_sync(inode, false);
658 int f2fs_getattr(const struct path *path, struct kstat *stat,
659 u32 request_mask, unsigned int query_flags)
661 struct inode *inode = d_inode(path->dentry);
662 struct f2fs_inode_info *fi = F2FS_I(inode);
665 flags = fi->i_flags & (FS_FL_USER_VISIBLE | FS_PROJINHERIT_FL);
666 if (flags & FS_APPEND_FL)
667 stat->attributes |= STATX_ATTR_APPEND;
668 if (flags & FS_COMPR_FL)
669 stat->attributes |= STATX_ATTR_COMPRESSED;
670 if (f2fs_encrypted_inode(inode))
671 stat->attributes |= STATX_ATTR_ENCRYPTED;
672 if (flags & FS_IMMUTABLE_FL)
673 stat->attributes |= STATX_ATTR_IMMUTABLE;
674 if (flags & FS_NODUMP_FL)
675 stat->attributes |= STATX_ATTR_NODUMP;
677 stat->attributes_mask |= (STATX_ATTR_APPEND |
678 STATX_ATTR_COMPRESSED |
679 STATX_ATTR_ENCRYPTED |
680 STATX_ATTR_IMMUTABLE |
683 generic_fillattr(inode, stat);
687 #ifdef CONFIG_F2FS_FS_POSIX_ACL
688 static void __setattr_copy(struct inode *inode, const struct iattr *attr)
690 unsigned int ia_valid = attr->ia_valid;
692 if (ia_valid & ATTR_UID)
693 inode->i_uid = attr->ia_uid;
694 if (ia_valid & ATTR_GID)
695 inode->i_gid = attr->ia_gid;
696 if (ia_valid & ATTR_ATIME)
697 inode->i_atime = timespec_trunc(attr->ia_atime,
698 inode->i_sb->s_time_gran);
699 if (ia_valid & ATTR_MTIME)
700 inode->i_mtime = timespec_trunc(attr->ia_mtime,
701 inode->i_sb->s_time_gran);
702 if (ia_valid & ATTR_CTIME)
703 inode->i_ctime = timespec_trunc(attr->ia_ctime,
704 inode->i_sb->s_time_gran);
705 if (ia_valid & ATTR_MODE) {
706 umode_t mode = attr->ia_mode;
708 if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID))
710 set_acl_inode(inode, mode);
714 #define __setattr_copy setattr_copy
717 int f2fs_setattr(struct dentry *dentry, struct iattr *attr)
719 struct inode *inode = d_inode(dentry);
721 bool size_changed = false;
723 err = setattr_prepare(dentry, attr);
727 if (is_quota_modification(inode, attr)) {
728 err = dquot_initialize(inode);
732 if ((attr->ia_valid & ATTR_UID &&
733 !uid_eq(attr->ia_uid, inode->i_uid)) ||
734 (attr->ia_valid & ATTR_GID &&
735 !gid_eq(attr->ia_gid, inode->i_gid))) {
736 err = dquot_transfer(inode, attr);
741 if (attr->ia_valid & ATTR_SIZE) {
742 if (f2fs_encrypted_inode(inode)) {
743 err = fscrypt_get_encryption_info(inode);
746 if (!fscrypt_has_encryption_key(inode))
750 if (attr->ia_size <= i_size_read(inode)) {
751 down_write(&F2FS_I(inode)->i_mmap_sem);
752 truncate_setsize(inode, attr->ia_size);
753 err = f2fs_truncate(inode);
754 up_write(&F2FS_I(inode)->i_mmap_sem);
759 * do not trim all blocks after i_size if target size is
760 * larger than i_size.
762 down_write(&F2FS_I(inode)->i_mmap_sem);
763 truncate_setsize(inode, attr->ia_size);
764 up_write(&F2FS_I(inode)->i_mmap_sem);
766 /* should convert inline inode here */
767 if (!f2fs_may_inline_data(inode)) {
768 err = f2fs_convert_inline_inode(inode);
772 inode->i_mtime = inode->i_ctime = current_time(inode);
778 __setattr_copy(inode, attr);
780 if (attr->ia_valid & ATTR_MODE) {
781 err = posix_acl_chmod(inode, get_inode_mode(inode));
782 if (err || is_inode_flag_set(inode, FI_ACL_MODE)) {
783 inode->i_mode = F2FS_I(inode)->i_acl_mode;
784 clear_inode_flag(inode, FI_ACL_MODE);
788 /* file size may changed here */
789 f2fs_mark_inode_dirty_sync(inode, size_changed);
791 /* inode change will produce dirty node pages flushed by checkpoint */
792 f2fs_balance_fs(F2FS_I_SB(inode), true);
797 const struct inode_operations f2fs_file_inode_operations = {
798 .getattr = f2fs_getattr,
799 .setattr = f2fs_setattr,
800 .get_acl = f2fs_get_acl,
801 .set_acl = f2fs_set_acl,
802 #ifdef CONFIG_F2FS_FS_XATTR
803 .listxattr = f2fs_listxattr,
805 .fiemap = f2fs_fiemap,
808 static int fill_zero(struct inode *inode, pgoff_t index,
809 loff_t start, loff_t len)
811 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
817 f2fs_balance_fs(sbi, true);
820 page = get_new_data_page(inode, NULL, index, false);
824 return PTR_ERR(page);
826 f2fs_wait_on_page_writeback(page, DATA, true);
827 zero_user(page, start, len);
828 set_page_dirty(page);
829 f2fs_put_page(page, 1);
833 int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
837 while (pg_start < pg_end) {
838 struct dnode_of_data dn;
839 pgoff_t end_offset, count;
841 set_new_dnode(&dn, inode, NULL, NULL, 0);
842 err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE);
844 if (err == -ENOENT) {
851 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
852 count = min(end_offset - dn.ofs_in_node, pg_end - pg_start);
854 f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset);
856 truncate_data_blocks_range(&dn, count);
864 static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
866 pgoff_t pg_start, pg_end;
867 loff_t off_start, off_end;
870 ret = f2fs_convert_inline_inode(inode);
874 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
875 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
877 off_start = offset & (PAGE_SIZE - 1);
878 off_end = (offset + len) & (PAGE_SIZE - 1);
880 if (pg_start == pg_end) {
881 ret = fill_zero(inode, pg_start, off_start,
882 off_end - off_start);
887 ret = fill_zero(inode, pg_start++, off_start,
888 PAGE_SIZE - off_start);
893 ret = fill_zero(inode, pg_end, 0, off_end);
898 if (pg_start < pg_end) {
899 struct address_space *mapping = inode->i_mapping;
900 loff_t blk_start, blk_end;
901 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
903 f2fs_balance_fs(sbi, true);
905 blk_start = (loff_t)pg_start << PAGE_SHIFT;
906 blk_end = (loff_t)pg_end << PAGE_SHIFT;
907 down_write(&F2FS_I(inode)->i_mmap_sem);
908 truncate_inode_pages_range(mapping, blk_start,
912 ret = truncate_hole(inode, pg_start, pg_end);
914 up_write(&F2FS_I(inode)->i_mmap_sem);
921 static int __read_out_blkaddrs(struct inode *inode, block_t *blkaddr,
922 int *do_replace, pgoff_t off, pgoff_t len)
924 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
925 struct dnode_of_data dn;
929 set_new_dnode(&dn, inode, NULL, NULL, 0);
930 ret = get_dnode_of_data(&dn, off, LOOKUP_NODE_RA);
931 if (ret && ret != -ENOENT) {
933 } else if (ret == -ENOENT) {
934 if (dn.max_level == 0)
936 done = min((pgoff_t)ADDRS_PER_BLOCK - dn.ofs_in_node, len);
942 done = min((pgoff_t)ADDRS_PER_PAGE(dn.node_page, inode) -
943 dn.ofs_in_node, len);
944 for (i = 0; i < done; i++, blkaddr++, do_replace++, dn.ofs_in_node++) {
945 *blkaddr = datablock_addr(dn.inode,
946 dn.node_page, dn.ofs_in_node);
947 if (!is_checkpointed_data(sbi, *blkaddr)) {
949 if (test_opt(sbi, LFS)) {
954 /* do not invalidate this block address */
955 f2fs_update_data_blkaddr(&dn, NULL_ADDR);
968 static int __roll_back_blkaddrs(struct inode *inode, block_t *blkaddr,
969 int *do_replace, pgoff_t off, int len)
971 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
972 struct dnode_of_data dn;
975 for (i = 0; i < len; i++, do_replace++, blkaddr++) {
976 if (*do_replace == 0)
979 set_new_dnode(&dn, inode, NULL, NULL, 0);
980 ret = get_dnode_of_data(&dn, off + i, LOOKUP_NODE_RA);
982 dec_valid_block_count(sbi, inode, 1);
983 invalidate_blocks(sbi, *blkaddr);
985 f2fs_update_data_blkaddr(&dn, *blkaddr);
992 static int __clone_blkaddrs(struct inode *src_inode, struct inode *dst_inode,
993 block_t *blkaddr, int *do_replace,
994 pgoff_t src, pgoff_t dst, pgoff_t len, bool full)
996 struct f2fs_sb_info *sbi = F2FS_I_SB(src_inode);
1001 if (blkaddr[i] == NULL_ADDR && !full) {
1006 if (do_replace[i] || blkaddr[i] == NULL_ADDR) {
1007 struct dnode_of_data dn;
1008 struct node_info ni;
1012 set_new_dnode(&dn, dst_inode, NULL, NULL, 0);
1013 ret = get_dnode_of_data(&dn, dst + i, ALLOC_NODE);
1017 get_node_info(sbi, dn.nid, &ni);
1018 ilen = min((pgoff_t)
1019 ADDRS_PER_PAGE(dn.node_page, dst_inode) -
1020 dn.ofs_in_node, len - i);
1022 dn.data_blkaddr = datablock_addr(dn.inode,
1023 dn.node_page, dn.ofs_in_node);
1024 truncate_data_blocks_range(&dn, 1);
1026 if (do_replace[i]) {
1027 f2fs_i_blocks_write(src_inode,
1029 f2fs_i_blocks_write(dst_inode,
1031 f2fs_replace_block(sbi, &dn, dn.data_blkaddr,
1032 blkaddr[i], ni.version, true, false);
1038 new_size = (dst + i) << PAGE_SHIFT;
1039 if (dst_inode->i_size < new_size)
1040 f2fs_i_size_write(dst_inode, new_size);
1041 } while (--ilen && (do_replace[i] || blkaddr[i] == NULL_ADDR));
1043 f2fs_put_dnode(&dn);
1045 struct page *psrc, *pdst;
1047 psrc = get_lock_data_page(src_inode, src + i, true);
1049 return PTR_ERR(psrc);
1050 pdst = get_new_data_page(dst_inode, NULL, dst + i,
1053 f2fs_put_page(psrc, 1);
1054 return PTR_ERR(pdst);
1056 f2fs_copy_page(psrc, pdst);
1057 set_page_dirty(pdst);
1058 f2fs_put_page(pdst, 1);
1059 f2fs_put_page(psrc, 1);
1061 ret = truncate_hole(src_inode, src + i, src + i + 1);
1070 static int __exchange_data_block(struct inode *src_inode,
1071 struct inode *dst_inode, pgoff_t src, pgoff_t dst,
1072 pgoff_t len, bool full)
1074 block_t *src_blkaddr;
1080 olen = min((pgoff_t)4 * ADDRS_PER_BLOCK, len);
1082 src_blkaddr = kvzalloc(sizeof(block_t) * olen, GFP_KERNEL);
1086 do_replace = kvzalloc(sizeof(int) * olen, GFP_KERNEL);
1088 kvfree(src_blkaddr);
1092 ret = __read_out_blkaddrs(src_inode, src_blkaddr,
1093 do_replace, src, olen);
1097 ret = __clone_blkaddrs(src_inode, dst_inode, src_blkaddr,
1098 do_replace, src, dst, olen, full);
1106 kvfree(src_blkaddr);
1112 __roll_back_blkaddrs(src_inode, src_blkaddr, do_replace, src, len);
1113 kvfree(src_blkaddr);
1118 static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end)
1120 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1121 pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
1124 f2fs_balance_fs(sbi, true);
1127 f2fs_drop_extent_tree(inode);
1129 ret = __exchange_data_block(inode, inode, end, start, nrpages - end, true);
1130 f2fs_unlock_op(sbi);
1134 static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
1136 pgoff_t pg_start, pg_end;
1140 if (offset + len >= i_size_read(inode))
1143 /* collapse range should be aligned to block size of f2fs. */
1144 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1147 ret = f2fs_convert_inline_inode(inode);
1151 pg_start = offset >> PAGE_SHIFT;
1152 pg_end = (offset + len) >> PAGE_SHIFT;
1154 down_write(&F2FS_I(inode)->i_mmap_sem);
1155 /* write out all dirty pages from offset */
1156 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1160 truncate_pagecache(inode, offset);
1162 ret = f2fs_do_collapse(inode, pg_start, pg_end);
1166 /* write out all moved pages, if possible */
1167 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1168 truncate_pagecache(inode, offset);
1170 new_size = i_size_read(inode) - len;
1171 truncate_pagecache(inode, new_size);
1173 ret = truncate_blocks(inode, new_size, true);
1175 f2fs_i_size_write(inode, new_size);
1178 up_write(&F2FS_I(inode)->i_mmap_sem);
1182 static int f2fs_do_zero_range(struct dnode_of_data *dn, pgoff_t start,
1185 struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
1186 pgoff_t index = start;
1187 unsigned int ofs_in_node = dn->ofs_in_node;
1191 for (; index < end; index++, dn->ofs_in_node++) {
1192 if (datablock_addr(dn->inode, dn->node_page,
1193 dn->ofs_in_node) == NULL_ADDR)
1197 dn->ofs_in_node = ofs_in_node;
1198 ret = reserve_new_blocks(dn, count);
1202 dn->ofs_in_node = ofs_in_node;
1203 for (index = start; index < end; index++, dn->ofs_in_node++) {
1204 dn->data_blkaddr = datablock_addr(dn->inode,
1205 dn->node_page, dn->ofs_in_node);
1207 * reserve_new_blocks will not guarantee entire block
1210 if (dn->data_blkaddr == NULL_ADDR) {
1214 if (dn->data_blkaddr != NEW_ADDR) {
1215 invalidate_blocks(sbi, dn->data_blkaddr);
1216 dn->data_blkaddr = NEW_ADDR;
1217 set_data_blkaddr(dn);
1221 f2fs_update_extent_cache_range(dn, start, 0, index - start);
1226 static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
1229 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1230 struct address_space *mapping = inode->i_mapping;
1231 pgoff_t index, pg_start, pg_end;
1232 loff_t new_size = i_size_read(inode);
1233 loff_t off_start, off_end;
1236 ret = inode_newsize_ok(inode, (len + offset));
1240 ret = f2fs_convert_inline_inode(inode);
1244 down_write(&F2FS_I(inode)->i_mmap_sem);
1245 ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1);
1249 truncate_pagecache_range(inode, offset, offset + len - 1);
1251 pg_start = ((unsigned long long) offset) >> PAGE_SHIFT;
1252 pg_end = ((unsigned long long) offset + len) >> PAGE_SHIFT;
1254 off_start = offset & (PAGE_SIZE - 1);
1255 off_end = (offset + len) & (PAGE_SIZE - 1);
1257 if (pg_start == pg_end) {
1258 ret = fill_zero(inode, pg_start, off_start,
1259 off_end - off_start);
1263 new_size = max_t(loff_t, new_size, offset + len);
1266 ret = fill_zero(inode, pg_start++, off_start,
1267 PAGE_SIZE - off_start);
1271 new_size = max_t(loff_t, new_size,
1272 (loff_t)pg_start << PAGE_SHIFT);
1275 for (index = pg_start; index < pg_end;) {
1276 struct dnode_of_data dn;
1277 unsigned int end_offset;
1282 set_new_dnode(&dn, inode, NULL, NULL, 0);
1283 ret = get_dnode_of_data(&dn, index, ALLOC_NODE);
1285 f2fs_unlock_op(sbi);
1289 end_offset = ADDRS_PER_PAGE(dn.node_page, inode);
1290 end = min(pg_end, end_offset - dn.ofs_in_node + index);
1292 ret = f2fs_do_zero_range(&dn, index, end);
1293 f2fs_put_dnode(&dn);
1294 f2fs_unlock_op(sbi);
1296 f2fs_balance_fs(sbi, dn.node_changed);
1302 new_size = max_t(loff_t, new_size,
1303 (loff_t)index << PAGE_SHIFT);
1307 ret = fill_zero(inode, pg_end, 0, off_end);
1311 new_size = max_t(loff_t, new_size, offset + len);
1316 if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size)
1317 f2fs_i_size_write(inode, new_size);
1319 up_write(&F2FS_I(inode)->i_mmap_sem);
1324 static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
1326 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1327 pgoff_t nr, pg_start, pg_end, delta, idx;
1331 new_size = i_size_read(inode) + len;
1332 ret = inode_newsize_ok(inode, new_size);
1336 if (offset >= i_size_read(inode))
1339 /* insert range should be aligned to block size of f2fs. */
1340 if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1))
1343 ret = f2fs_convert_inline_inode(inode);
1347 f2fs_balance_fs(sbi, true);
1349 down_write(&F2FS_I(inode)->i_mmap_sem);
1350 ret = truncate_blocks(inode, i_size_read(inode), true);
1354 /* write out all dirty pages from offset */
1355 ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1359 truncate_pagecache(inode, offset);
1361 pg_start = offset >> PAGE_SHIFT;
1362 pg_end = (offset + len) >> PAGE_SHIFT;
1363 delta = pg_end - pg_start;
1364 idx = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE;
1366 while (!ret && idx > pg_start) {
1367 nr = idx - pg_start;
1373 f2fs_drop_extent_tree(inode);
1375 ret = __exchange_data_block(inode, inode, idx,
1376 idx + delta, nr, false);
1377 f2fs_unlock_op(sbi);
1380 /* write out all moved pages, if possible */
1381 filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX);
1382 truncate_pagecache(inode, offset);
1385 f2fs_i_size_write(inode, new_size);
1387 up_write(&F2FS_I(inode)->i_mmap_sem);
1391 static int expand_inode_data(struct inode *inode, loff_t offset,
1392 loff_t len, int mode)
1394 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1395 struct f2fs_map_blocks map = { .m_next_pgofs = NULL };
1397 loff_t new_size = i_size_read(inode);
1401 err = inode_newsize_ok(inode, (len + offset));
1405 err = f2fs_convert_inline_inode(inode);
1409 f2fs_balance_fs(sbi, true);
1411 pg_end = ((unsigned long long)offset + len) >> PAGE_SHIFT;
1412 off_end = (offset + len) & (PAGE_SIZE - 1);
1414 map.m_lblk = ((unsigned long long)offset) >> PAGE_SHIFT;
1415 map.m_len = pg_end - map.m_lblk;
1419 err = f2fs_map_blocks(inode, &map, 1, F2FS_GET_BLOCK_PRE_AIO);
1426 last_off = map.m_lblk + map.m_len - 1;
1428 /* update new size to the failed position */
1429 new_size = (last_off == pg_end) ? offset + len:
1430 (loff_t)(last_off + 1) << PAGE_SHIFT;
1432 new_size = ((loff_t)pg_end << PAGE_SHIFT) + off_end;
1435 if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size)
1436 f2fs_i_size_write(inode, new_size);
1441 static long f2fs_fallocate(struct file *file, int mode,
1442 loff_t offset, loff_t len)
1444 struct inode *inode = file_inode(file);
1447 /* f2fs only support ->fallocate for regular file */
1448 if (!S_ISREG(inode->i_mode))
1451 if (f2fs_encrypted_inode(inode) &&
1452 (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
1455 if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
1456 FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
1457 FALLOC_FL_INSERT_RANGE))
1462 if (mode & FALLOC_FL_PUNCH_HOLE) {
1463 if (offset >= inode->i_size)
1466 ret = punch_hole(inode, offset, len);
1467 } else if (mode & FALLOC_FL_COLLAPSE_RANGE) {
1468 ret = f2fs_collapse_range(inode, offset, len);
1469 } else if (mode & FALLOC_FL_ZERO_RANGE) {
1470 ret = f2fs_zero_range(inode, offset, len, mode);
1471 } else if (mode & FALLOC_FL_INSERT_RANGE) {
1472 ret = f2fs_insert_range(inode, offset, len);
1474 ret = expand_inode_data(inode, offset, len, mode);
1478 inode->i_mtime = inode->i_ctime = current_time(inode);
1479 f2fs_mark_inode_dirty_sync(inode, false);
1480 if (mode & FALLOC_FL_KEEP_SIZE)
1481 file_set_keep_isize(inode);
1482 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1486 inode_unlock(inode);
1488 trace_f2fs_fallocate(inode, mode, offset, len, ret);
1492 static int f2fs_release_file(struct inode *inode, struct file *filp)
1495 * f2fs_relase_file is called at every close calls. So we should
1496 * not drop any inmemory pages by close called by other process.
1498 if (!(filp->f_mode & FMODE_WRITE) ||
1499 atomic_read(&inode->i_writecount) != 1)
1502 /* some remained atomic pages should discarded */
1503 if (f2fs_is_atomic_file(inode))
1504 drop_inmem_pages(inode);
1505 if (f2fs_is_volatile_file(inode)) {
1506 clear_inode_flag(inode, FI_VOLATILE_FILE);
1507 stat_dec_volatile_write(inode);
1508 set_inode_flag(inode, FI_DROP_CACHE);
1509 filemap_fdatawrite(inode->i_mapping);
1510 clear_inode_flag(inode, FI_DROP_CACHE);
1515 static int f2fs_file_flush(struct file *file, fl_owner_t id)
1517 struct inode *inode = file_inode(file);
1520 * If the process doing a transaction is crashed, we should do
1521 * roll-back. Otherwise, other reader/write can see corrupted database
1522 * until all the writers close its file. Since this should be done
1523 * before dropping file lock, it needs to do in ->flush.
1525 if (f2fs_is_atomic_file(inode) &&
1526 F2FS_I(inode)->inmem_task == current)
1527 drop_inmem_pages(inode);
1531 static int f2fs_ioc_getflags(struct file *filp, unsigned long arg)
1533 struct inode *inode = file_inode(filp);
1534 struct f2fs_inode_info *fi = F2FS_I(inode);
1535 unsigned int flags = fi->i_flags &
1536 (FS_FL_USER_VISIBLE | FS_PROJINHERIT_FL);
1537 return put_user(flags, (int __user *)arg);
1540 static int __f2fs_ioc_setflags(struct inode *inode, unsigned int flags)
1542 struct f2fs_inode_info *fi = F2FS_I(inode);
1543 unsigned int oldflags;
1545 /* Is it quota file? Do not allow user to mess with it */
1546 if (IS_NOQUOTA(inode))
1549 flags = f2fs_mask_flags(inode->i_mode, flags);
1551 oldflags = fi->i_flags;
1553 if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL))
1554 if (!capable(CAP_LINUX_IMMUTABLE))
1557 flags = flags & (FS_FL_USER_MODIFIABLE | FS_PROJINHERIT_FL);
1558 flags |= oldflags & ~(FS_FL_USER_MODIFIABLE | FS_PROJINHERIT_FL);
1559 fi->i_flags = flags;
1561 if (fi->i_flags & FS_PROJINHERIT_FL)
1562 set_inode_flag(inode, FI_PROJ_INHERIT);
1564 clear_inode_flag(inode, FI_PROJ_INHERIT);
1566 inode->i_ctime = current_time(inode);
1567 f2fs_set_inode_flags(inode);
1568 f2fs_mark_inode_dirty_sync(inode, false);
1572 static int f2fs_ioc_setflags(struct file *filp, unsigned long arg)
1574 struct inode *inode = file_inode(filp);
1578 if (!inode_owner_or_capable(inode))
1581 if (get_user(flags, (int __user *)arg))
1584 ret = mnt_want_write_file(filp);
1590 ret = __f2fs_ioc_setflags(inode, flags);
1592 inode_unlock(inode);
1593 mnt_drop_write_file(filp);
1597 static int f2fs_ioc_getversion(struct file *filp, unsigned long arg)
1599 struct inode *inode = file_inode(filp);
1601 return put_user(inode->i_generation, (int __user *)arg);
1604 static int f2fs_ioc_start_atomic_write(struct file *filp)
1606 struct inode *inode = file_inode(filp);
1609 if (!inode_owner_or_capable(inode))
1612 if (!S_ISREG(inode->i_mode))
1615 ret = mnt_want_write_file(filp);
1621 if (f2fs_is_atomic_file(inode))
1624 ret = f2fs_convert_inline_inode(inode);
1628 set_inode_flag(inode, FI_ATOMIC_FILE);
1629 set_inode_flag(inode, FI_HOT_DATA);
1630 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1632 if (!get_dirty_pages(inode))
1635 f2fs_msg(F2FS_I_SB(inode)->sb, KERN_WARNING,
1636 "Unexpected flush for atomic writes: ino=%lu, npages=%u",
1637 inode->i_ino, get_dirty_pages(inode));
1638 ret = filemap_write_and_wait_range(inode->i_mapping, 0, LLONG_MAX);
1640 clear_inode_flag(inode, FI_ATOMIC_FILE);
1645 F2FS_I(inode)->inmem_task = current;
1646 stat_inc_atomic_write(inode);
1647 stat_update_max_atomic_write(inode);
1649 inode_unlock(inode);
1650 mnt_drop_write_file(filp);
1654 static int f2fs_ioc_commit_atomic_write(struct file *filp)
1656 struct inode *inode = file_inode(filp);
1659 if (!inode_owner_or_capable(inode))
1662 ret = mnt_want_write_file(filp);
1668 if (f2fs_is_volatile_file(inode))
1671 if (f2fs_is_atomic_file(inode)) {
1672 ret = commit_inmem_pages(inode);
1676 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
1678 clear_inode_flag(inode, FI_ATOMIC_FILE);
1679 stat_dec_atomic_write(inode);
1682 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
1685 inode_unlock(inode);
1686 mnt_drop_write_file(filp);
1690 static int f2fs_ioc_start_volatile_write(struct file *filp)
1692 struct inode *inode = file_inode(filp);
1695 if (!inode_owner_or_capable(inode))
1698 if (!S_ISREG(inode->i_mode))
1701 ret = mnt_want_write_file(filp);
1707 if (f2fs_is_volatile_file(inode))
1710 ret = f2fs_convert_inline_inode(inode);
1714 stat_inc_volatile_write(inode);
1715 stat_update_max_volatile_write(inode);
1717 set_inode_flag(inode, FI_VOLATILE_FILE);
1718 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1720 inode_unlock(inode);
1721 mnt_drop_write_file(filp);
1725 static int f2fs_ioc_release_volatile_write(struct file *filp)
1727 struct inode *inode = file_inode(filp);
1730 if (!inode_owner_or_capable(inode))
1733 ret = mnt_want_write_file(filp);
1739 if (!f2fs_is_volatile_file(inode))
1742 if (!f2fs_is_first_block_written(inode)) {
1743 ret = truncate_partial_data_page(inode, 0, true);
1747 ret = punch_hole(inode, 0, F2FS_BLKSIZE);
1749 inode_unlock(inode);
1750 mnt_drop_write_file(filp);
1754 static int f2fs_ioc_abort_volatile_write(struct file *filp)
1756 struct inode *inode = file_inode(filp);
1759 if (!inode_owner_or_capable(inode))
1762 ret = mnt_want_write_file(filp);
1768 if (f2fs_is_atomic_file(inode))
1769 drop_inmem_pages(inode);
1770 if (f2fs_is_volatile_file(inode)) {
1771 clear_inode_flag(inode, FI_VOLATILE_FILE);
1772 stat_dec_volatile_write(inode);
1773 ret = f2fs_do_sync_file(filp, 0, LLONG_MAX, 0, true);
1776 inode_unlock(inode);
1778 mnt_drop_write_file(filp);
1779 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1783 static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
1785 struct inode *inode = file_inode(filp);
1786 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1787 struct super_block *sb = sbi->sb;
1791 if (!capable(CAP_SYS_ADMIN))
1794 if (get_user(in, (__u32 __user *)arg))
1797 ret = mnt_want_write_file(filp);
1802 case F2FS_GOING_DOWN_FULLSYNC:
1803 sb = freeze_bdev(sb->s_bdev);
1804 if (sb && !IS_ERR(sb)) {
1805 f2fs_stop_checkpoint(sbi, false);
1806 thaw_bdev(sb->s_bdev, sb);
1809 case F2FS_GOING_DOWN_METASYNC:
1810 /* do checkpoint only */
1811 f2fs_sync_fs(sb, 1);
1812 f2fs_stop_checkpoint(sbi, false);
1814 case F2FS_GOING_DOWN_NOSYNC:
1815 f2fs_stop_checkpoint(sbi, false);
1817 case F2FS_GOING_DOWN_METAFLUSH:
1818 sync_meta_pages(sbi, META, LONG_MAX);
1819 f2fs_stop_checkpoint(sbi, false);
1825 f2fs_update_time(sbi, REQ_TIME);
1827 mnt_drop_write_file(filp);
1831 static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
1833 struct inode *inode = file_inode(filp);
1834 struct super_block *sb = inode->i_sb;
1835 struct request_queue *q = bdev_get_queue(sb->s_bdev);
1836 struct fstrim_range range;
1839 if (!capable(CAP_SYS_ADMIN))
1842 if (!blk_queue_discard(q))
1845 if (copy_from_user(&range, (struct fstrim_range __user *)arg,
1849 ret = mnt_want_write_file(filp);
1853 range.minlen = max((unsigned int)range.minlen,
1854 q->limits.discard_granularity);
1855 ret = f2fs_trim_fs(F2FS_SB(sb), &range);
1856 mnt_drop_write_file(filp);
1860 if (copy_to_user((struct fstrim_range __user *)arg, &range,
1863 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1867 static bool uuid_is_nonzero(__u8 u[16])
1871 for (i = 0; i < 16; i++)
1877 static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
1879 struct inode *inode = file_inode(filp);
1881 f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
1883 return fscrypt_ioctl_set_policy(filp, (const void __user *)arg);
1886 static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg)
1888 return fscrypt_ioctl_get_policy(filp, (void __user *)arg);
1891 static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg)
1893 struct inode *inode = file_inode(filp);
1894 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1897 if (!f2fs_sb_has_crypto(inode->i_sb))
1900 if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt))
1903 err = mnt_want_write_file(filp);
1907 /* update superblock with uuid */
1908 generate_random_uuid(sbi->raw_super->encrypt_pw_salt);
1910 err = f2fs_commit_super(sbi, false);
1913 memset(sbi->raw_super->encrypt_pw_salt, 0, 16);
1914 mnt_drop_write_file(filp);
1917 mnt_drop_write_file(filp);
1919 if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt,
1925 static int f2fs_ioc_gc(struct file *filp, unsigned long arg)
1927 struct inode *inode = file_inode(filp);
1928 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1932 if (!capable(CAP_SYS_ADMIN))
1935 if (get_user(sync, (__u32 __user *)arg))
1938 if (f2fs_readonly(sbi->sb))
1941 ret = mnt_want_write_file(filp);
1946 if (!mutex_trylock(&sbi->gc_mutex)) {
1951 mutex_lock(&sbi->gc_mutex);
1954 ret = f2fs_gc(sbi, sync, true, NULL_SEGNO);
1956 mnt_drop_write_file(filp);
1960 static int f2fs_ioc_gc_range(struct file *filp, unsigned long arg)
1962 struct inode *inode = file_inode(filp);
1963 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
1964 struct f2fs_gc_range range;
1968 if (!capable(CAP_SYS_ADMIN))
1971 if (copy_from_user(&range, (struct f2fs_gc_range __user *)arg,
1975 if (f2fs_readonly(sbi->sb))
1978 ret = mnt_want_write_file(filp);
1982 end = range.start + range.len;
1983 if (range.start < MAIN_BLKADDR(sbi) || end >= MAX_BLKADDR(sbi))
1987 if (!mutex_trylock(&sbi->gc_mutex)) {
1992 mutex_lock(&sbi->gc_mutex);
1995 ret = f2fs_gc(sbi, range.sync, true, GET_SEGNO(sbi, range.start));
1996 range.start += sbi->blocks_per_seg;
1997 if (range.start <= end)
2000 mnt_drop_write_file(filp);
2004 static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg)
2006 struct inode *inode = file_inode(filp);
2007 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2010 if (!capable(CAP_SYS_ADMIN))
2013 if (f2fs_readonly(sbi->sb))
2016 ret = mnt_want_write_file(filp);
2020 ret = f2fs_sync_fs(sbi->sb, 1);
2022 mnt_drop_write_file(filp);
2026 static int f2fs_defragment_range(struct f2fs_sb_info *sbi,
2028 struct f2fs_defragment *range)
2030 struct inode *inode = file_inode(filp);
2031 struct f2fs_map_blocks map = { .m_next_pgofs = NULL };
2032 struct extent_info ei = {0,0,0};
2033 pgoff_t pg_start, pg_end;
2034 unsigned int blk_per_seg = sbi->blocks_per_seg;
2035 unsigned int total = 0, sec_num;
2036 block_t blk_end = 0;
2037 bool fragmented = false;
2040 /* if in-place-update policy is enabled, don't waste time here */
2041 if (need_inplace_update_policy(inode, NULL))
2044 pg_start = range->start >> PAGE_SHIFT;
2045 pg_end = (range->start + range->len) >> PAGE_SHIFT;
2047 f2fs_balance_fs(sbi, true);
2051 /* writeback all dirty pages in the range */
2052 err = filemap_write_and_wait_range(inode->i_mapping, range->start,
2053 range->start + range->len - 1);
2058 * lookup mapping info in extent cache, skip defragmenting if physical
2059 * block addresses are continuous.
2061 if (f2fs_lookup_extent_cache(inode, pg_start, &ei)) {
2062 if (ei.fofs + ei.len >= pg_end)
2066 map.m_lblk = pg_start;
2069 * lookup mapping info in dnode page cache, skip defragmenting if all
2070 * physical block addresses are continuous even if there are hole(s)
2071 * in logical blocks.
2073 while (map.m_lblk < pg_end) {
2074 map.m_len = pg_end - map.m_lblk;
2075 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ);
2079 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
2084 if (blk_end && blk_end != map.m_pblk) {
2088 blk_end = map.m_pblk + map.m_len;
2090 map.m_lblk += map.m_len;
2096 map.m_lblk = pg_start;
2097 map.m_len = pg_end - pg_start;
2099 sec_num = (map.m_len + BLKS_PER_SEC(sbi) - 1) / BLKS_PER_SEC(sbi);
2102 * make sure there are enough free section for LFS allocation, this can
2103 * avoid defragment running in SSR mode when free section are allocated
2106 if (has_not_enough_free_secs(sbi, 0, sec_num)) {
2111 while (map.m_lblk < pg_end) {
2116 map.m_len = pg_end - map.m_lblk;
2117 err = f2fs_map_blocks(inode, &map, 0, F2FS_GET_BLOCK_READ);
2121 if (!(map.m_flags & F2FS_MAP_FLAGS)) {
2126 set_inode_flag(inode, FI_DO_DEFRAG);
2129 while (idx < map.m_lblk + map.m_len && cnt < blk_per_seg) {
2132 page = get_lock_data_page(inode, idx, true);
2134 err = PTR_ERR(page);
2138 set_page_dirty(page);
2139 f2fs_put_page(page, 1);
2148 if (idx < pg_end && cnt < blk_per_seg)
2151 clear_inode_flag(inode, FI_DO_DEFRAG);
2153 err = filemap_fdatawrite(inode->i_mapping);
2158 clear_inode_flag(inode, FI_DO_DEFRAG);
2160 inode_unlock(inode);
2162 range->len = (u64)total << PAGE_SHIFT;
2166 static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
2168 struct inode *inode = file_inode(filp);
2169 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2170 struct f2fs_defragment range;
2173 if (!capable(CAP_SYS_ADMIN))
2176 if (!S_ISREG(inode->i_mode) || f2fs_is_atomic_file(inode))
2179 if (f2fs_readonly(sbi->sb))
2182 if (copy_from_user(&range, (struct f2fs_defragment __user *)arg,
2186 /* verify alignment of offset & size */
2187 if (range.start & (F2FS_BLKSIZE - 1) || range.len & (F2FS_BLKSIZE - 1))
2190 if (unlikely((range.start + range.len) >> PAGE_SHIFT >
2191 sbi->max_file_blocks))
2194 err = mnt_want_write_file(filp);
2198 err = f2fs_defragment_range(sbi, filp, &range);
2199 mnt_drop_write_file(filp);
2201 f2fs_update_time(sbi, REQ_TIME);
2205 if (copy_to_user((struct f2fs_defragment __user *)arg, &range,
2212 static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
2213 struct file *file_out, loff_t pos_out, size_t len)
2215 struct inode *src = file_inode(file_in);
2216 struct inode *dst = file_inode(file_out);
2217 struct f2fs_sb_info *sbi = F2FS_I_SB(src);
2218 size_t olen = len, dst_max_i_size = 0;
2222 if (file_in->f_path.mnt != file_out->f_path.mnt ||
2223 src->i_sb != dst->i_sb)
2226 if (unlikely(f2fs_readonly(src->i_sb)))
2229 if (!S_ISREG(src->i_mode) || !S_ISREG(dst->i_mode))
2232 if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst))
2236 if (pos_in == pos_out)
2238 if (pos_out > pos_in && pos_out < pos_in + len)
2244 if (!inode_trylock(dst)) {
2251 if (pos_in + len > src->i_size || pos_in + len < pos_in)
2254 olen = len = src->i_size - pos_in;
2255 if (pos_in + len == src->i_size)
2256 len = ALIGN(src->i_size, F2FS_BLKSIZE) - pos_in;
2262 dst_osize = dst->i_size;
2263 if (pos_out + olen > dst->i_size)
2264 dst_max_i_size = pos_out + olen;
2266 /* verify the end result is block aligned */
2267 if (!IS_ALIGNED(pos_in, F2FS_BLKSIZE) ||
2268 !IS_ALIGNED(pos_in + len, F2FS_BLKSIZE) ||
2269 !IS_ALIGNED(pos_out, F2FS_BLKSIZE))
2272 ret = f2fs_convert_inline_inode(src);
2276 ret = f2fs_convert_inline_inode(dst);
2280 /* write out all dirty pages from offset */
2281 ret = filemap_write_and_wait_range(src->i_mapping,
2282 pos_in, pos_in + len);
2286 ret = filemap_write_and_wait_range(dst->i_mapping,
2287 pos_out, pos_out + len);
2291 f2fs_balance_fs(sbi, true);
2293 ret = __exchange_data_block(src, dst, pos_in >> F2FS_BLKSIZE_BITS,
2294 pos_out >> F2FS_BLKSIZE_BITS,
2295 len >> F2FS_BLKSIZE_BITS, false);
2299 f2fs_i_size_write(dst, dst_max_i_size);
2300 else if (dst_osize != dst->i_size)
2301 f2fs_i_size_write(dst, dst_osize);
2303 f2fs_unlock_op(sbi);
2312 static int f2fs_ioc_move_range(struct file *filp, unsigned long arg)
2314 struct f2fs_move_range range;
2318 if (!(filp->f_mode & FMODE_READ) ||
2319 !(filp->f_mode & FMODE_WRITE))
2322 if (copy_from_user(&range, (struct f2fs_move_range __user *)arg,
2326 dst = fdget(range.dst_fd);
2330 if (!(dst.file->f_mode & FMODE_WRITE)) {
2335 err = mnt_want_write_file(filp);
2339 err = f2fs_move_file_range(filp, range.pos_in, dst.file,
2340 range.pos_out, range.len);
2342 mnt_drop_write_file(filp);
2346 if (copy_to_user((struct f2fs_move_range __user *)arg,
2347 &range, sizeof(range)))
2354 static int f2fs_ioc_flush_device(struct file *filp, unsigned long arg)
2356 struct inode *inode = file_inode(filp);
2357 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2358 struct sit_info *sm = SIT_I(sbi);
2359 unsigned int start_segno = 0, end_segno = 0;
2360 unsigned int dev_start_segno = 0, dev_end_segno = 0;
2361 struct f2fs_flush_device range;
2364 if (!capable(CAP_SYS_ADMIN))
2367 if (f2fs_readonly(sbi->sb))
2370 if (copy_from_user(&range, (struct f2fs_flush_device __user *)arg,
2374 if (sbi->s_ndevs <= 1 || sbi->s_ndevs - 1 <= range.dev_num ||
2375 sbi->segs_per_sec != 1) {
2376 f2fs_msg(sbi->sb, KERN_WARNING,
2377 "Can't flush %u in %d for segs_per_sec %u != 1\n",
2378 range.dev_num, sbi->s_ndevs,
2383 ret = mnt_want_write_file(filp);
2387 if (range.dev_num != 0)
2388 dev_start_segno = GET_SEGNO(sbi, FDEV(range.dev_num).start_blk);
2389 dev_end_segno = GET_SEGNO(sbi, FDEV(range.dev_num).end_blk);
2391 start_segno = sm->last_victim[FLUSH_DEVICE];
2392 if (start_segno < dev_start_segno || start_segno >= dev_end_segno)
2393 start_segno = dev_start_segno;
2394 end_segno = min(start_segno + range.segments, dev_end_segno);
2396 while (start_segno < end_segno) {
2397 if (!mutex_trylock(&sbi->gc_mutex)) {
2401 sm->last_victim[GC_CB] = end_segno + 1;
2402 sm->last_victim[GC_GREEDY] = end_segno + 1;
2403 sm->last_victim[ALLOC_NEXT] = end_segno + 1;
2404 ret = f2fs_gc(sbi, true, true, start_segno);
2412 mnt_drop_write_file(filp);
2416 static int f2fs_ioc_get_features(struct file *filp, unsigned long arg)
2418 struct inode *inode = file_inode(filp);
2419 u32 sb_feature = le32_to_cpu(F2FS_I_SB(inode)->raw_super->feature);
2421 /* Must validate to set it with SQLite behavior in Android. */
2422 sb_feature |= F2FS_FEATURE_ATOMIC_WRITE;
2424 return put_user(sb_feature, (u32 __user *)arg);
2428 static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
2430 struct inode *inode = file_inode(filp);
2431 struct f2fs_inode_info *fi = F2FS_I(inode);
2432 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2433 struct super_block *sb = sbi->sb;
2434 struct dquot *transfer_to[MAXQUOTAS] = {};
2439 if (!f2fs_sb_has_project_quota(sb)) {
2440 if (projid != F2FS_DEF_PROJID)
2446 if (!f2fs_has_extra_attr(inode))
2449 kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
2451 if (projid_eq(kprojid, F2FS_I(inode)->i_projid))
2454 err = mnt_want_write_file(filp);
2461 /* Is it quota file? Do not allow user to mess with it */
2462 if (IS_NOQUOTA(inode))
2465 ipage = get_node_page(sbi, inode->i_ino);
2466 if (IS_ERR(ipage)) {
2467 err = PTR_ERR(ipage);
2471 if (!F2FS_FITS_IN_INODE(F2FS_INODE(ipage), fi->i_extra_isize,
2474 f2fs_put_page(ipage, 1);
2477 f2fs_put_page(ipage, 1);
2479 dquot_initialize(inode);
2481 transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
2482 if (!IS_ERR(transfer_to[PRJQUOTA])) {
2483 err = __dquot_transfer(inode, transfer_to);
2484 dqput(transfer_to[PRJQUOTA]);
2489 F2FS_I(inode)->i_projid = kprojid;
2490 inode->i_ctime = current_time(inode);
2492 f2fs_mark_inode_dirty_sync(inode, true);
2494 inode_unlock(inode);
2495 mnt_drop_write_file(filp);
2499 static int f2fs_ioc_setproject(struct file *filp, __u32 projid)
2501 if (projid != F2FS_DEF_PROJID)
2507 /* Transfer internal flags to xflags */
2508 static inline __u32 f2fs_iflags_to_xflags(unsigned long iflags)
2512 if (iflags & FS_SYNC_FL)
2513 xflags |= FS_XFLAG_SYNC;
2514 if (iflags & FS_IMMUTABLE_FL)
2515 xflags |= FS_XFLAG_IMMUTABLE;
2516 if (iflags & FS_APPEND_FL)
2517 xflags |= FS_XFLAG_APPEND;
2518 if (iflags & FS_NODUMP_FL)
2519 xflags |= FS_XFLAG_NODUMP;
2520 if (iflags & FS_NOATIME_FL)
2521 xflags |= FS_XFLAG_NOATIME;
2522 if (iflags & FS_PROJINHERIT_FL)
2523 xflags |= FS_XFLAG_PROJINHERIT;
2527 #define F2FS_SUPPORTED_FS_XFLAGS (FS_XFLAG_SYNC | FS_XFLAG_IMMUTABLE | \
2528 FS_XFLAG_APPEND | FS_XFLAG_NODUMP | \
2529 FS_XFLAG_NOATIME | FS_XFLAG_PROJINHERIT)
2531 /* Flags we can manipulate with through EXT4_IOC_FSSETXATTR */
2532 #define F2FS_FL_XFLAG_VISIBLE (FS_SYNC_FL | \
2539 /* Transfer xflags flags to internal */
2540 static inline unsigned long f2fs_xflags_to_iflags(__u32 xflags)
2542 unsigned long iflags = 0;
2544 if (xflags & FS_XFLAG_SYNC)
2545 iflags |= FS_SYNC_FL;
2546 if (xflags & FS_XFLAG_IMMUTABLE)
2547 iflags |= FS_IMMUTABLE_FL;
2548 if (xflags & FS_XFLAG_APPEND)
2549 iflags |= FS_APPEND_FL;
2550 if (xflags & FS_XFLAG_NODUMP)
2551 iflags |= FS_NODUMP_FL;
2552 if (xflags & FS_XFLAG_NOATIME)
2553 iflags |= FS_NOATIME_FL;
2554 if (xflags & FS_XFLAG_PROJINHERIT)
2555 iflags |= FS_PROJINHERIT_FL;
2560 static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg)
2562 struct inode *inode = file_inode(filp);
2563 struct f2fs_inode_info *fi = F2FS_I(inode);
2566 memset(&fa, 0, sizeof(struct fsxattr));
2567 fa.fsx_xflags = f2fs_iflags_to_xflags(fi->i_flags &
2568 (FS_FL_USER_VISIBLE | FS_PROJINHERIT_FL));
2570 if (f2fs_sb_has_project_quota(inode->i_sb))
2571 fa.fsx_projid = (__u32)from_kprojid(&init_user_ns,
2574 if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa)))
2579 static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg)
2581 struct inode *inode = file_inode(filp);
2582 struct f2fs_inode_info *fi = F2FS_I(inode);
2587 if (copy_from_user(&fa, (struct fsxattr __user *)arg, sizeof(fa)))
2590 /* Make sure caller has proper permission */
2591 if (!inode_owner_or_capable(inode))
2594 if (fa.fsx_xflags & ~F2FS_SUPPORTED_FS_XFLAGS)
2597 flags = f2fs_xflags_to_iflags(fa.fsx_xflags);
2598 if (f2fs_mask_flags(inode->i_mode, flags) != flags)
2601 err = mnt_want_write_file(filp);
2606 flags = (fi->i_flags & ~F2FS_FL_XFLAG_VISIBLE) |
2607 (flags & F2FS_FL_XFLAG_VISIBLE);
2608 err = __f2fs_ioc_setflags(inode, flags);
2609 inode_unlock(inode);
2610 mnt_drop_write_file(filp);
2614 err = f2fs_ioc_setproject(filp, fa.fsx_projid);
2621 long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
2624 case F2FS_IOC_GETFLAGS:
2625 return f2fs_ioc_getflags(filp, arg);
2626 case F2FS_IOC_SETFLAGS:
2627 return f2fs_ioc_setflags(filp, arg);
2628 case F2FS_IOC_GETVERSION:
2629 return f2fs_ioc_getversion(filp, arg);
2630 case F2FS_IOC_START_ATOMIC_WRITE:
2631 return f2fs_ioc_start_atomic_write(filp);
2632 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
2633 return f2fs_ioc_commit_atomic_write(filp);
2634 case F2FS_IOC_START_VOLATILE_WRITE:
2635 return f2fs_ioc_start_volatile_write(filp);
2636 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
2637 return f2fs_ioc_release_volatile_write(filp);
2638 case F2FS_IOC_ABORT_VOLATILE_WRITE:
2639 return f2fs_ioc_abort_volatile_write(filp);
2640 case F2FS_IOC_SHUTDOWN:
2641 return f2fs_ioc_shutdown(filp, arg);
2643 return f2fs_ioc_fitrim(filp, arg);
2644 case F2FS_IOC_SET_ENCRYPTION_POLICY:
2645 return f2fs_ioc_set_encryption_policy(filp, arg);
2646 case F2FS_IOC_GET_ENCRYPTION_POLICY:
2647 return f2fs_ioc_get_encryption_policy(filp, arg);
2648 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
2649 return f2fs_ioc_get_encryption_pwsalt(filp, arg);
2650 case F2FS_IOC_GARBAGE_COLLECT:
2651 return f2fs_ioc_gc(filp, arg);
2652 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
2653 return f2fs_ioc_gc_range(filp, arg);
2654 case F2FS_IOC_WRITE_CHECKPOINT:
2655 return f2fs_ioc_write_checkpoint(filp, arg);
2656 case F2FS_IOC_DEFRAGMENT:
2657 return f2fs_ioc_defragment(filp, arg);
2658 case F2FS_IOC_MOVE_RANGE:
2659 return f2fs_ioc_move_range(filp, arg);
2660 case F2FS_IOC_FLUSH_DEVICE:
2661 return f2fs_ioc_flush_device(filp, arg);
2662 case F2FS_IOC_GET_FEATURES:
2663 return f2fs_ioc_get_features(filp, arg);
2664 case F2FS_IOC_FSGETXATTR:
2665 return f2fs_ioc_fsgetxattr(filp, arg);
2666 case F2FS_IOC_FSSETXATTR:
2667 return f2fs_ioc_fssetxattr(filp, arg);
2673 static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
2675 struct file *file = iocb->ki_filp;
2676 struct inode *inode = file_inode(file);
2677 struct blk_plug plug;
2681 ret = generic_write_checks(iocb, from);
2685 if (iov_iter_fault_in_readable(from, iov_iter_count(from)))
2686 set_inode_flag(inode, FI_NO_PREALLOC);
2688 err = f2fs_preallocate_blocks(iocb, from);
2690 inode_unlock(inode);
2693 blk_start_plug(&plug);
2694 ret = __generic_file_write_iter(iocb, from);
2695 blk_finish_plug(&plug);
2696 clear_inode_flag(inode, FI_NO_PREALLOC);
2698 inode_unlock(inode);
2701 ret = generic_write_sync(iocb, ret);
2705 #ifdef CONFIG_COMPAT
2706 long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
2709 case F2FS_IOC32_GETFLAGS:
2710 cmd = F2FS_IOC_GETFLAGS;
2712 case F2FS_IOC32_SETFLAGS:
2713 cmd = F2FS_IOC_SETFLAGS;
2715 case F2FS_IOC32_GETVERSION:
2716 cmd = F2FS_IOC_GETVERSION;
2718 case F2FS_IOC_START_ATOMIC_WRITE:
2719 case F2FS_IOC_COMMIT_ATOMIC_WRITE:
2720 case F2FS_IOC_START_VOLATILE_WRITE:
2721 case F2FS_IOC_RELEASE_VOLATILE_WRITE:
2722 case F2FS_IOC_ABORT_VOLATILE_WRITE:
2723 case F2FS_IOC_SHUTDOWN:
2724 case F2FS_IOC_SET_ENCRYPTION_POLICY:
2725 case F2FS_IOC_GET_ENCRYPTION_PWSALT:
2726 case F2FS_IOC_GET_ENCRYPTION_POLICY:
2727 case F2FS_IOC_GARBAGE_COLLECT:
2728 case F2FS_IOC_GARBAGE_COLLECT_RANGE:
2729 case F2FS_IOC_WRITE_CHECKPOINT:
2730 case F2FS_IOC_DEFRAGMENT:
2731 case F2FS_IOC_MOVE_RANGE:
2732 case F2FS_IOC_FLUSH_DEVICE:
2733 case F2FS_IOC_GET_FEATURES:
2734 case F2FS_IOC_FSGETXATTR:
2735 case F2FS_IOC_FSSETXATTR:
2738 return -ENOIOCTLCMD;
2740 return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg));
2744 const struct file_operations f2fs_file_operations = {
2745 .llseek = f2fs_llseek,
2746 .read_iter = generic_file_read_iter,
2747 .write_iter = f2fs_file_write_iter,
2748 .open = f2fs_file_open,
2749 .release = f2fs_release_file,
2750 .mmap = f2fs_file_mmap,
2751 .flush = f2fs_file_flush,
2752 .fsync = f2fs_sync_file,
2753 .fallocate = f2fs_fallocate,
2754 .unlocked_ioctl = f2fs_ioctl,
2755 #ifdef CONFIG_COMPAT
2756 .compat_ioctl = f2fs_compat_ioctl,
2758 .splice_read = generic_file_splice_read,
2759 .splice_write = iter_file_splice_write,