xfs: call xfs_qm_dqattach before performing reflink operations

Ensure that we've attached all the necessary dquots before performing
reflink operations so that quota accounting is accurate.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>

1 files changed, 5 insertions, 0 deletions

diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c
index 47aea2e82c26..bcc2ad4f0899 100644
--- a/fs/xfs/xfs_reflink.c
+++ b/fs/xfs/xfs_reflink.c
@@ -1295,6 +1295,11 @@ xfs_reflink_remap_range(
         if (ret <= 0)
                 goto out_unlock;
 
+        /* Attach dquots to dest inode before changing block map */
+        ret = xfs_qm_dqattach(dest, 0);
+        if (ret)
+                goto out_unlock;
+
         trace_xfs_reflink_remap_range(src, pos_in, len, dest, pos_out);
 
         /*