[PATCH 17/24] xfs: clear inode reflink flag when freeing blocks

[Darrick J. Wong]

Clear the inode reflink flag when freeing or truncating all blocks
in a file.

Signed-off-by: Darrick J. Wong <darrick.wong at oracle.com>
---
 fs/xfs/xfs_bmap_util.c |    8 ++++++++
 fs/xfs/xfs_inode.c     |    6 ++++++
 2 files changed, 14 insertions(+)


diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
index 345ea79..0091186 100644
--- a/fs/xfs/xfs_bmap_util.c
+++ b/fs/xfs/xfs_bmap_util.c
@@ -1330,6 +1330,14 @@ xfs_free_file_space(
 		}
 
 		/*
+		 * Clear the reflink flag if we freed everything.
+		 */
+		if (ip->i_d.di_nblocks == 0 && xfs_is_reflink_inode(ip)) {
+			ip->i_d.di_flags2 &= ~XFS_DIFLAG2_REFLINK;
+			xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
+		}
+
+		/*
 		 * complete the transaction
 		 */
 		error = xfs_bmap_finish(&tp, &free_list, &committed);
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 3da9f4d..1d97238 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -1566,6 +1566,12 @@ xfs_itruncate_extents(
 	}
 
 	/*
+	 * Clear the reflink flag if we truncated everything.
+	 */
+	if (ip->i_d.di_nblocks == 0 && xfs_is_reflink_inode(ip))
+		ip->i_d.di_flags2 &= ~XFS_DIFLAG2_REFLINK;
+
+	/*
 	 * Always re-log the inode so that our permanent transaction can keep
 	 * on rolling it forward in the log.
 	 */