X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=block%2Fblk-core.c;h=1905aaba49fb2cd1d999bce222949c938fa3e9e5;hb=b845f313d78e4e259ec449909e3bbadf77b53a6d;hp=2987fe47b5eecaa565bce30a7c3d661813453351;hpb=9604006d283fb67dda5ee9e0e15b7cc6c62e1557;p=linux-2.6-omap-h63xx.git

diff --git a/block/blk-core.c b/block/blk-core.c
index 2987fe47b5e..1905aaba49f 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -482,6 +482,7 @@ struct request_queue *blk_alloc_queue_node(gfp_t gfp_mask, int node_id)
 	kobject_init(&q->kobj, &blk_queue_ktype);
 
 	mutex_init(&q->sysfs_lock);
+	spin_lock_init(&q->__queue_lock);
 
 	return q;
 }
@@ -544,10 +545,8 @@ blk_init_queue_node(request_fn_proc *rfn, spinlock_t *lock, int node_id)
 	 * if caller didn't supply a lock, they get per-queue locking with
 	 * our embedded lock
 	 */
-	if (!lock) {
-		spin_lock_init(&q->__queue_lock);
+	if (!lock)
 		lock = &q->__queue_lock;
-	}
 
 	q->request_fn		= rfn;
 	q->prep_rq_fn		= NULL;
@@ -807,35 +806,32 @@ static struct request *get_request_wait(struct request_queue *q, int rw_flags,
 	rq = get_request(q, rw_flags, bio, GFP_NOIO);
 	while (!rq) {
 		DEFINE_WAIT(wait);
+		struct io_context *ioc;
 		struct request_list *rl = &q->rq;
 
 		prepare_to_wait_exclusive(&rl->wait[rw], &wait,
 				TASK_UNINTERRUPTIBLE);
 
-		rq = get_request(q, rw_flags, bio, GFP_NOIO);
-
-		if (!rq) {
-			struct io_context *ioc;
-
-			blk_add_trace_generic(q, bio, rw, BLK_TA_SLEEPRQ);
+		blk_add_trace_generic(q, bio, rw, BLK_TA_SLEEPRQ);
 
-			__generic_unplug_device(q);
-			spin_unlock_irq(q->queue_lock);
-			io_schedule();
+		__generic_unplug_device(q);
+		spin_unlock_irq(q->queue_lock);
+		io_schedule();
 
-			/*
-			 * After sleeping, we become a "batching" process and
-			 * will be able to allocate at least one request, and
-			 * up to a big batch of them for a small period time.
-			 * See ioc_batching, ioc_set_batching
-			 */
-			ioc = current_io_context(GFP_NOIO, q->node);
-			ioc_set_batching(q, ioc);
+		/*
+		 * After sleeping, we become a "batching" process and
+		 * will be able to allocate at least one request, and
+		 * up to a big batch of them for a small period time.
+		 * See ioc_batching, ioc_set_batching
+		 */
+		ioc = current_io_context(GFP_NOIO, q->node);
+		ioc_set_batching(q, ioc);
 
-			spin_lock_irq(q->queue_lock);
-		}
+		spin_lock_irq(q->queue_lock);
 		finish_wait(&rl->wait[rw], &wait);
-	}
+
+		rq = get_request(q, rw_flags, bio, GFP_NOIO);
+	};
 
 	return rq;
 }