diff mbox series

[5/6] xfs: check that CoW fork extents are not shared

Message ID 166473480943.1083927.15910341627217842210.stgit@magnolia (mailing list archive)
State Accepted, archived
Headers show
Series xfs: strengthen file mapping scrub | expand

Commit Message

Darrick J. Wong Oct. 2, 2022, 6:20 p.m. UTC 
From: Darrick J. Wong <djwong@kernel.org>

Ensure that extents in an inode's CoW fork are not marked as shared in
the refcount btree.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
---
 fs/xfs/scrub/bmap.c |    2 ++
 1 file changed, 2 insertions(+)

Comments

Dave Chinner Oct. 14, 2022, 5:08 a.m. UTC | #1 
On Sun, Oct 02, 2022 at 11:20:09AM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <djwong@kernel.org>
> 
> Ensure that extents in an inode's CoW fork are not marked as shared in
> the refcount btree.
> 
> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
> ---
>  fs/xfs/scrub/bmap.c |    2 ++
>  1 file changed, 2 insertions(+)

Good catch!

Reviewed-by: Dave Chinner <dchinner@redhat.com>
diff mbox series

Patch

diff --git a/fs/xfs/scrub/bmap.c b/fs/xfs/scrub/bmap.c
index 6986aef80002..c3dd231eea1c 100644
--- a/fs/xfs/scrub/bmap.c
+++ b/fs/xfs/scrub/bmap.c
@@ -338,6 +338,8 @@  xchk_bmap_iextent_xref(
 	case XFS_COW_FORK:
 		xchk_xref_is_cow_staging(info->sc, agbno,
 				irec->br_blockcount);
+		xchk_xref_is_not_shared(info->sc, agbno,
+				irec->br_blockcount);
 		break;
 	}