From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Date: Tue, 12 Dec 2006 09:26:55 +0000 (+0100)
Subject: [PATCH] remove unnecessary blk_queue_bounce in SG_IO
X-Git-Tag: firefly_0821_release~31885^2~10
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=335302618f47b43e1204d24a3edb65a3e5bc8c03;p=firefly-linux-kernel-4.4.55.git

[PATCH] remove unnecessary blk_queue_bounce in SG_IO

When I converted the original patch, I left unnecessary blk_queue_bounce in
SG_IO.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---

diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c
index 045cabd3d4b4..f322b6a441d8 100644
--- a/block/scsi_ioctl.c
+++ b/block/scsi_ioctl.c
@@ -271,13 +271,6 @@ static int sg_io(struct file *file, request_queue_t *q,
 
 	rq->cmd_type = REQ_TYPE_BLOCK_PC;
 
-	/*
-	 * bounce this after holding a reference to the original bio, it's
-	 * needed for proper unmapping
-	 */
-	if (rq->bio)
-		blk_queue_bounce(q, &rq->bio);
-
 	rq->timeout = jiffies_to_msecs(hdr->timeout);
 	if (!rq->timeout)
 		rq->timeout = q->sg_timeout;