block: don't set bounce limit in blk_init_allocated_queue

And just move it into scsi_transport_sas which needs it due to low-level
drivers directly derferencing bio_data, and into blk_init_queue_node,
which will need a further push into the callers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

block/blk-core.c

@@ -960,6 +960,11 @@ blk_init_queue_node(request_fn_proc *rfn, spinlock_t *lock, int node_id)
 		return NULL;
 	}
 
+	/*
+	 * by default assume old behaviour and bounce for any highmem page
+	 */
+	blk_queue_bounce_limit(q, BLK_BOUNCE_HIGH);
+
 	return q;
 }
 EXPORT_SYMBOL(blk_init_queue_node);
@@ -989,11 +994,6 @@ int blk_init_allocated_queue(struct request_queue *q)
 	 */
 	blk_queue_make_request(q, blk_queue_bio);
 
-	/*
-	 * by default assume old behaviour and bounce for any highmem page
-	 */
-	blk_queue_bounce_limit(q, BLK_BOUNCE_HIGH);
-
 	q->sg_reserved_size = INT_MAX;
 
 	/* Protect q->elevator from elevator_change */

drivers/scsi/scsi_transport_sas.c

@@ -251,6 +251,11 @@ static int sas_bsg_initialize(struct Scsi_Host *shost, struct sas_rphy *rphy)
 	if (error)
 		goto out_cleanup_queue;
 
+	/*
+	 * by default assume old behaviour and bounce for any highmem page
+	 */
+	blk_queue_bounce_limit(q, BLK_BOUNCE_HIGH);
+
 	error = bsg_register_queue(q, dev, name, release);
 	if (error)
 		goto out_cleanup_queue;