1 files changed, 7 insertions, 14 deletions

diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index 8e9d84825e1c..052b17487625 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -1323,17 +1323,12 @@ cfq_alloc_io_context(struct cfq_data *cfqd, gfp_t gfp_mask)
         struct cfq_io_context *cic = kmem_cache_alloc(cfq_ioc_pool, gfp_mask);
 
         if (cic) {
-                RB_CLEAR(&cic->rb_node);
-                cic->key = NULL;
-                cic->cfqq[ASYNC] = NULL;
-                cic->cfqq[SYNC] = NULL;
+                memset(cic, 0, sizeof(*cic));
+                RB_CLEAR_COLOR(&cic->rb_node);
                 cic->last_end_request = jiffies;
-                cic->ttime_total = 0;
-                cic->ttime_samples = 0;
-                cic->ttime_mean = 0;
+                INIT_LIST_HEAD(&cic->queue_list);
                 cic->dtor = cfq_free_io_context;
                 cic->exit = cfq_exit_io_context;
-                INIT_LIST_HEAD(&cic->queue_list);
                 atomic_inc(&ioc_count);
         }
 
@@ -2251,14 +2246,14 @@ static void cfq_exit_queue(elevator_t *e)
         kfree(cfqd);
 }
 
-static int cfq_init_queue(request_queue_t *q, elevator_t *e)
+static void *cfq_init_queue(request_queue_t *q, elevator_t *e)
 {
         struct cfq_data *cfqd;
         int i;
 
         cfqd = kmalloc(sizeof(*cfqd), GFP_KERNEL);
         if (!cfqd)
-                return -ENOMEM;
+                return NULL;
 
         memset(cfqd, 0, sizeof(*cfqd));
 
@@ -2288,8 +2283,6 @@ static int cfq_init_queue(request_queue_t *q, elevator_t *e)
         for (i = 0; i < CFQ_QHASH_ENTRIES; i++)
                 INIT_HLIST_HEAD(&cfqd->cfq_hash[i]);
 
-        e->elevator_data = cfqd;
-
         cfqd->queue = q;
 
         cfqd->max_queued = q->nr_requests / 4;
@@ -2316,14 +2309,14 @@ static int cfq_init_queue(request_queue_t *q, elevator_t *e)
         cfqd->cfq_slice_async_rq = cfq_slice_async_rq;
         cfqd->cfq_slice_idle = cfq_slice_idle;
 
-        return 0;
+        return cfqd;
 out_crqpool:
         kfree(cfqd->cfq_hash);
 out_cfqhash:
         kfree(cfqd->crq_hash);
 out_crqhash:
         kfree(cfqd);
-        return -ENOMEM;
+        return NULL;
 }
 
 static void cfq_slab_kill(void)