[PATCH] loop 7/9 remove blk_queue_bounce

[Hugh Dickins]

What purpose does loop_make_request's blk_queue_bounce serve?  None,
it's just a relic from before the kmaps were added to loop's transfers,
and ties up mempooled resources - in the file-backed case, with no
guarantee they'll soon be freed.  And what purpose does loop_set_fd's
blk_queue_bounce_limit serve?  None, blk_queue_make_request did that.

--- loop6/drivers/block/loop.c	Tue Jun 10 12:56:34 2003
+++ loop7/drivers/block/loop.c	Tue Jun 10 12:59:47 2003
@@ -548,8 +548,6 @@
 		goto err;
 	}
 
-	blk_queue_bounce(q, &old_bio);
-
 	/*
 	 * file backed, queue for loop_thread to handle
 	 */
@@ -742,7 +740,6 @@
 	 * device
 	 */
 	blk_queue_make_request(&lo->lo_queue, loop_make_request);
-	blk_queue_bounce_limit(&lo->lo_queue, BLK_BOUNCE_HIGH);
 	lo->lo_queue.queuedata = lo;
 
 	/*