Merge branch 'for-2.6.37/core' of git://git.kernel.dk/linux-2.6-block

* 'for-2.6.37/core' of git://git.kernel.dk/linux-2.6-block:
block: fix use-after-free bug in blk throttle code

block/blk-core.c

···
 	if (q->elevator)
 		elevator_exit(q->elevator);
 
-	blk_throtl_exit(q);
-
 	blk_put_queue(q);
 }
 EXPORT_SYMBOL(blk_cleanup_queue);

block/blk-sysfs.c

···
 
 	blk_sync_queue(q);
 
+	blk_throtl_exit(q);
+
 	if (rl->rq_pool)
 		mempool_destroy(rl->rq_pool);