[PATCH] update blk_execute_rq to take an at_head parameter

Original From: Mike Christie <michaelc@cs.wisc.edu>

Modified to split out block changes (this patch) and SCSI pieces.

Signed-off-by: Jens Axboe <axboe@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

drivers/ide/ide-disk.c

@@ -750,7 +750,7 @@ static int idedisk_issue_flush(request_queue_t *q, struct gendisk *disk,
 
 	idedisk_prepare_flush(q, rq);
 
-	ret = blk_execute_rq(q, disk, rq);
+	ret = blk_execute_rq(q, disk, rq, 0);
 
 	/*
 	 * if we failed and caller wants error offset, get it