[PATCH 54/58] xfs: swap inode reflink flags when swapping inode extents

["Darrick J. Wong" <darrick.wong@xxxxxxxxxx>]

When we're swapping the extents of two inodes, be sure to swap the
reflink inode flag too.

Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
 fs/xfs/xfs_bmap_util.c |   12 ++++++++++++
 1 file changed, 12 insertions(+)


diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
index f161db1..6d7bd6a 100644
--- a/fs/xfs/xfs_bmap_util.c
+++ b/fs/xfs/xfs_bmap_util.c
@@ -1948,6 +1948,18 @@ xfs_swap_extents(
                break;
        }
 
+       /* Do we have to swap reflink flags? */
+       if ((ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK) ^
+           (tip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK)) {
+               __uint64_t      f;
+
+               f = ip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK;
+               ip->i_d.di_flags2 &= ~XFS_DIFLAG2_REFLINK;
+               ip->i_d.di_flags2 |= tip->i_d.di_flags2 & XFS_DIFLAG2_REFLINK;
+               tip->i_d.di_flags2 &= ~XFS_DIFLAG2_REFLINK;
+               tip->i_d.di_flags2 |= f & XFS_DIFLAG2_REFLINK;
+       }
+
        xfs_trans_log_inode(tp, ip,  src_log_flags);
        xfs_trans_log_inode(tp, tip, target_log_flags);