diff mbox series

[v17,08/21] xfs: don't allow to enable DAX on fs-verity sealed inode

Message ID 20261002223705.2175542-9-aalbersh@kernel.org
State Not Applicable
Headers show
Series fs-verity support for XFS with post EOF merkle tree | expand

Commit Message

Andrey Albershteyn Oct. 2, 2026, 10:36 p.m. UTC 
fs-verity doesn't support DAX. Forbid filesystem to enable DAX on
inodes which already have fs-verity enabled. The opposite is checked
when fs-verity is enabled, it won't be enabled if DAX is.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrey Albershteyn <aalbersh@kernel.org>
---
 fs/xfs/xfs_iops.c | 2 ++
 1 file changed, 2 insertions(+)

Comments

sashiko-bot@kernel.org Oct. 3, 2026, 1:34 a.m. UTC | #1 
> fs-verity doesn't support DAX. Forbid filesystem to enable DAX on
> inodes which already have fs-verity enabled. The opposite is checked
> when fs-verity is enabled, it won't be enabled if DAX is.
> 
> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
> Reviewed-by: Christoph Hellwig <hch@lst.de>
> Signed-off-by: Andrey Albershteyn <aalbersh@kernel.org>

Sashiko has reviewed this patch and found no issues. It looks great!
diff mbox series

Patch

diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index c7ecbb3d258a..b07ca2a33c64 100644
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -1369,6 +1369,8 @@  xfs_inode_should_enable_dax(
 		return false;
 	if (!xfs_inode_supports_dax(ip))
 		return false;
+	if (ip->i_diflags2 & XFS_DIFLAG2_VERITY)
+		return false;
 	if (xfs_has_dax_always(ip->i_mount))
 		return true;
 	if (ip->i_diflags2 & XFS_DIFLAG2_DAX)