1 files changed, 11 insertions, 2 deletions

diff --git a/block/elevator.c b/block/elevator.c
index 9ad5ccc4c5ee..df75676f6671 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -474,6 +474,15 @@ int elv_merge(struct request_queue *q, struct request **req, struct bio *bio)
         int ret;
 
         /*
+         * Levels of merges:
+         *      nomerges:  No merges at all attempted
+         *      noxmerges: Only simple one-hit cache try
+         *      merges:    All merge tries attempted
+         */
+        if (blk_queue_nomerges(q))
+                return ELEVATOR_NO_MERGE;
+
+        /*
          * First try one-hit cache.
          */
         if (q->last_merge) {
@@ -484,7 +493,7 @@ int elv_merge(struct request_queue *q, struct request **req, struct bio *bio)
                 }
         }
 
-        if (blk_queue_nomerges(q))
+        if (blk_queue_noxmerges(q))
                 return ELEVATOR_NO_MERGE;
 
         /*
@@ -883,7 +892,7 @@ elv_attr_store(struct kobject *kobj, struct attribute *attr,
         return error;
 }
 
-static struct sysfs_ops elv_sysfs_ops = {
+static const struct sysfs_ops elv_sysfs_ops = {
         .show   = elv_attr_show,
         .store  = elv_attr_store,
 };