5.15-stable review patch. If anyone has any objections, please let me know.
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From: Jaegeuk Kim jaegeuk@kernel.org
[ Upstream commit 5fed0be8583f08c1548b4dcd9e5ee0d1133d0730 ]
If the pinned file has a hole by partial truncation, application that has the block map will be broken.
Reviewed-by: Chao Yu chao@kernel.org Signed-off-by: Jaegeuk Kim jaegeuk@kernel.org Stable-dep-of: 278a6253a673 ("f2fs: fix to relocate check condition in f2fs_fallocate()") Signed-off-by: Sasha Levin sashal@kernel.org --- fs/f2fs/file.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index da071ed11a3f6..959e1458412df 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -1760,7 +1760,11 @@ static long f2fs_fallocate(struct file *file, int mode, (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) return -EOPNOTSUPP;
- if (f2fs_compressed_file(inode) && + /* + * Pinned file should not support partial trucation since the block + * can be used by applications. + */ + if ((f2fs_compressed_file(inode) || f2fs_is_pinned_file(inode)) && (mode & (FALLOC_FL_PUNCH_HOLE | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | FALLOC_FL_INSERT_RANGE))) return -EOPNOTSUPP;