This is a note to let you know that I've just added the patch titled
f2fs: fix to relocate check condition in f2fs_fallocate()
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
f2fs-fix-to-relocate-check-condition-in-f2fs_falloca.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit afb6a7e47cf1d857621652fb1353b928f77f910f
Author: Chao Yu <chao@xxxxxxxxxx>
Date: Wed Apr 3 22:24:19 2024 +0800
f2fs: fix to relocate check condition in f2fs_fallocate()
[ Upstream commit 278a6253a673611dbc8ab72a3b34b151a8e75822 ]
compress and pinfile flag should be checked after inode lock held to
avoid race condition, fix it.
Fixes: 4c8ff7095bef ("f2fs: support data compression")
Fixes: 5fed0be8583f ("f2fs: do not allow partial truncation on pinned file")
Signed-off-by: Chao Yu <chao@xxxxxxxxxx>
Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 420939ca36422..d908ef72fef6e 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1797,15 +1797,6 @@ static long f2fs_fallocate(struct file *file, int mode,
(mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
return -EOPNOTSUPP;
- /*
- * Pinned file should not support partial truncation 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;
-
if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE |
FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE |
FALLOC_FL_INSERT_RANGE))
@@ -1813,6 +1804,17 @@ static long f2fs_fallocate(struct file *file, int mode,
inode_lock(inode);
+ /*
+ * Pinned file should not support partial truncation 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))) {
+ ret = -EOPNOTSUPP;
+ goto out;
+ }
+
ret = file_modified(file);
if (ret)
goto out;
