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

Darrick J. Wong
2015-10-07T05:01:15Z

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@oracle.com>
---
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);