[PATCH 02/10] xfs: fix FITRIM reporting again

Darrick J. Wong
2024-08-27T23:34:15Z

From: Darrick J. Wong <djwong@kernel.org>

Don't report FITRIMming more bytes than possibly exist in the
filesystem.

Fixes: 410e8a18f8e93 ("xfs: don't bother reporting blocks trimmed via FITRIM")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
---
fs/xfs/xfs_discard.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/xfs/xfs_discard.c b/fs/xfs/xfs_discard.c
index bf1e3f330018d..d8c4a5dcca7ae 100644
--- a/fs/xfs/xfs_discard.c
+++ b/fs/xfs/xfs_discard.c
@@ -707,7 +707,7 @@ xfs_ioc_trim(
return last_error;

range.len = min_t(unsigned long long, range.len,
- XFS_FSB_TO_B(mp, max_blocks));
+ XFS_FSB_TO_B(mp, max_blocks) - range.start);
if (copy_to_user(urange, &range, sizeof(range)))
return -EFAULT;
return 0;