Revert "f2fs: block cache/dio write during f2fs_enable_checkpoint()"

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This reverts commit 196c81fdd4.

Original patch may cause below deadlock, revert it.

write				remount
- write_begin
 - lock_page  --- lock A
 - prepare_write_begin
  - f2fs_map_lock
				- f2fs_enable_checkpoint
				 - down_write(cp_enable_rwsem)  --- lock B
				 - sync_inode_sb
				  - writepages
				   - lock_page			--- lock A
   - down_read(cp_enable_rwsem)  --- lock A

Cc: stable@kernel.org
Fixes: 196c81fdd4 ("f2fs: block cache/dio write during f2fs_enable_checkpoint()")
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

...

This commit is contained in:

Chao Yu 2026-01-16 11:38:16 +08:00 • committed by Jaegeuk Kim

parent 0eda086de8

commit 3996b70209

3 changed files with 9 additions and 34 deletions

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2

fs/f2fs/data.c

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3

fs/f2fs/f2fs.h

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38

fs/f2fs/super.c

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