f2fs: compress: fix to cover f2fs_disable_compressed_file() w/ i_sem

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[ Upstream commit 2f9420d3a9 ]

- f2fs_disable_compressed_file
  - check inode_has_data
					- f2fs_file_mmap
					- mkwrite
					 - f2fs_get_block_locked
					 : update metadata in compressed
					   inode's disk layout
  - fi->i_flags &= ~F2FS_COMPR_FL
  - clear_inode_flag(inode, FI_COMPRESSED_FILE);

we should use i_sem lock to prevent above race case.

Fixes: 4c8ff7095b ("f2fs: support data compression")
Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Chao Yu 2024-01-22 10:23:13 +08:00 • committed by Sasha Levin

parent 67eba3e674

commit 98df108a9a

1 changed files with 11 additions and 2 deletions

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fs/f2fs/f2fs.h

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