From: Nick Piggin <nickpiggin@yahoo.com.au>
Date: Thu, 23 Jun 2005 07:08:54 +0000 (-0700)
Subject: [PATCH] blk: unplug later
X-Git-Tag: archive/raspbian/4.9.13-1+rpi1~10^2~51155^2~86
X-Git-Url: https://dgit.raspbian.org/%22http:/www.example.com/cgi/%22https:/www.github.com/%22bookmarks:///%22http:/www.example.com/cgi/%22https:/www.github.com/%22bookmarks:/?a=commitdiff_plain;h=bdd646a44672115c986593956aa4ef105485a184;p=linux-4.9.git

[PATCH] blk: unplug later

get_request_wait needn't unplug the device immediately.

Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/drivers/block/ll_rw_blk.c b/drivers/block/ll_rw_blk.c
index 1e847151c3a3..fd94ea27d594 100644
--- a/drivers/block/ll_rw_blk.c
+++ b/drivers/block/ll_rw_blk.c
@@ -1969,7 +1969,6 @@ static struct request *get_request_wait(request_queue_t *q, int rw)
 	DEFINE_WAIT(wait);
 	struct request *rq;
 
-	generic_unplug_device(q);
 	do {
 		struct request_list *rl = &q->rq;
 
@@ -1981,6 +1980,7 @@ static struct request *get_request_wait(request_queue_t *q, int rw)
 		if (!rq) {
 			struct io_context *ioc;
 
+			generic_unplug_device(q);
 			io_schedule();
 
 			/*