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authorChristoph Hellwig <hch@lst.de>2018-03-13 23:15:33 -0700
committerDarrick J. Wong <darrick.wong@oracle.com>2018-03-15 10:31:38 -0700
commitdf79b81b2e6a801c134c3e06c647715a316b4a92 (patch)
treea744eb0c45de9d6fc72361cc7434d80bdb4bf45e /fs/xfs
parent1d4352de511f4c9b6f4466c8fd4cfc25b14869b7 (diff)
downloadlinux-df79b81b2e6a801c134c3e06c647715a316b4a92.tar.gz
xfs: minor cleanup for xfs_reflink_end_cow
Use xfs_iext_prev_extent to skip to the previous extent instead of
opencoding it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'fs/xfs')
-rw-r--r--fs/xfs/xfs_reflink.c17
1 files changed, 8 insertions, 9 deletions
diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c
index 90aac8889dd9..cdbd342a5249 100644
--- a/fs/xfs/xfs_reflink.c
+++ b/fs/xfs/xfs_reflink.c
@@ -762,10 +762,8 @@ xfs_reflink_end_cow(
 		xfs_trim_extent(&del, offset_fsb, end_fsb - offset_fsb);
 
 		/* Extent delete may have bumped ext forward */
-		if (!del.br_blockcount) {
-			xfs_iext_prev(ifp, &icur);
-			goto next_extent;
-		}
+		if (!del.br_blockcount)
+			goto prev_extent;
 
 		ASSERT(!isnullstartblock(got.br_startblock));
 
@@ -774,10 +772,8 @@ xfs_reflink_end_cow(
 		 * speculatively preallocated CoW extents that have been
 		 * allocated but have not yet been involved in a write.
 		 */
-		if (got.br_state == XFS_EXT_UNWRITTEN) {
-			xfs_iext_prev(ifp, &icur);
-			goto next_extent;
-		}
+		if (got.br_state == XFS_EXT_UNWRITTEN)
+			goto prev_extent;
 
 		/* Unmap the old blocks in the data fork. */
 		xfs_defer_init(&dfops, &firstfsb);
@@ -816,9 +812,12 @@ xfs_reflink_end_cow(
 		error = xfs_defer_finish(&tp, &dfops);
 		if (error)
 			goto out_defer;
-next_extent:
 		if (!xfs_iext_get_extent(ifp, &icur, &got))
 			break;
+		continue;
+prev_extent:
+		if (!xfs_iext_prev_extent(ifp, &icur, &got))
+			break;
 	}
 
 	error = xfs_trans_commit(tp);