[PATCH 3.16 253/346] Btrfs: add missing blk_finish_plug in btrfs_sync_log()

[Ben Hutchings]

3.16.39-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Forrest Liu <forrestl@xxxxxxxxxxxx>

commit 3da5ab56482f322a9736c484db8773899c5c731b upstream.

Add missing blk_finish_plug in btrfs_sync_log()

Signed-off-by: Forrest Liu <forrestl@xxxxxxxxxxxx>
Reviewed-by: David Sterba <dsterba@xxxxxxx>
Signed-off-by: Chris Mason <clm@xxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
 fs/btrfs/tree-log.c | 1 +
 1 file changed, 1 insertion(+)

--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -2600,6 +2600,7 @@ int btrfs_sync_log(struct btrfs_trans_ha
 	}
 
 	if (log_root_tree->log_transid_committed >= root_log_ctx.log_transid) {
+		blk_finish_plug(&plug);
 		mutex_unlock(&log_root_tree->log_mutex);
 		ret = root_log_ctx.log_ret;
 		goto out;