f2fs: truncate page cache before clearing flags when aborting atomic write
In f2fs_do_write_data_page, FI_ATOMIC_FILE flag selects the target inode between the original inode and COW inode. When aborting atomic write and writeback occur simultaneously, invalid data can be written to original inode if the FI_ATOMIC_FILE flag is cleared meanwhile. To prevent the problem, let's truncate all pages before clearing the flag Atomic write thread Writeback thread f2fs_abort_atomic_write clear_inode_flag(inode, FI_ATOMIC_FILE) __writeback_single_inode do_writepages f2fs_do_write_data_page - use dn of original inode truncate_inode_pages_final Fixes: 3db1de0e ("f2fs: change the current atomic write way") Cc: stable@vger.kernel.org #v5.19+ Reviewed-by:Sungjong Seo <sj1557.seo@samsung.com> Reviewed-by:
Yeongjin Gil <youngjin.gil@samsung.com> Signed-off-by:
Sunmin Jeong <s_min.jeong@samsung.com> Reviewed-by:
Daeho Jeong <daehojeong@google.com> Reviewed-by:
Chao Yu <chao@kernel.org> Signed-off-by:
Jaegeuk Kim <jaegeuk@kernel.org>
parent
4bf78322
Please register or sign in to comment