[PATCH] as-iosched: remove state assertion in as_add_request()

Kill the arq->state poison statement in as_add_request(), it can trigger
for perfectly valid code that just reuses a request after io completion
instead of freeing it and allocating a new one. We probably should
introduce a blk_init_request() to start from scratch, but for now just
kill it as we will be removing the as specific poisoning soon.

Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

block/as-iosched.c

@@ -1371,10 +1371,6 @@ static void as_add_request(request_queue_t *q, struct request *rq)
 	struct as_rq *alias;
 	int data_dir;
 
-	if (arq->state != AS_RQ_PRESCHED) {
-		printk("arq->state: %d\n", arq->state);
-		WARN_ON(1);
-	}
 	arq->state = AS_RQ_NEW;
 
 	if (rq_data_dir(arq->request) == READ