在 2022/7/1 8:31, Darrick J. Wong 写道:
On Thu, Jun 09, 2022 at 10:34:35PM +0800, Shiyang Ruan wrote:
Failure notification is not supported on partitions. So, when we mount
a reflink enabled xfs on a partition with dax option, let it fail with
-EINVAL code.
Signed-off-by: Shiyang Ruan <ruansy.f...@fujitsu.com>
Looks good to me, though I think this patch applies to ... wherever all
those rmap+reflink+dax patches went. I think that's akpm's tree, right?
Yes, they are in his tree, still in mm-unstable now.
Ideally this would go in through there to keep the pieces together, but
I don't mind tossing this in at the end of the 5.20 merge window if akpm
is unwilling.
Both are fine to me. Thanks!
--
Ruan.
Reviewed-by: Darrick J. Wong <djw...@kernel.org>
--D
---
fs/xfs/xfs_super.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 8495ef076ffc..a3c221841fa6 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -348,8 +348,10 @@ xfs_setup_dax_always(
goto disable_dax;
}
- if (xfs_has_reflink(mp)) {
- xfs_alert(mp, "DAX and reflink cannot be used together!");
+ if (xfs_has_reflink(mp) &&
+ bdev_is_partition(mp->m_ddev_targp->bt_bdev)) {
+ xfs_alert(mp,
+ "DAX and reflink cannot work with multi-partitions!");
return -EINVAL;
}
--
2.36.1
