From: Darrick J. Wong <darrick.wong@oracle.com>
Date: Fri, 19 Jan 2018 16:56:04 +0000 (-0800)
Subject: xfs: call xfs_qm_dqattach before performing reflink operations
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=09ac862397041fc484cd7294b15d41073aa78864;p=openwrt%2Fstaging%2Fblogic.git

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>
---

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);
 
 	/*