From: Nick Piggin <nickpiggin@yahoo.com.au>
To: Andrew Morton <akpm@osdl.org>
Cc: Jens Axboe <axboe@suse.de>,
linux-kernel <linux-kernel@vger.kernel.org>,
"Chen, Kenneth W" <kenneth.w.chen@intel.com>
Subject: [patch 6/9] blk: unplug later
Date: Tue, 12 Apr 2005 22:50:41 +1000 [thread overview]
Message-ID: <425BC421.9010302@yahoo.com.au> (raw)
In-Reply-To: <425BC262.1070500@yahoo.com.au>
[-- Attachment #1: Type: text/plain, Size: 32 bytes --]
6/9
--
SUSE Labs, Novell Inc.
[-- Attachment #2: blk-unplug-later.patch --]
[-- Type: text/plain, Size: 726 bytes --]
get_request_wait needn't unplug the device immediately.
Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
Index: linux-2.6/drivers/block/ll_rw_blk.c
===================================================================
--- linux-2.6.orig/drivers/block/ll_rw_blk.c 2005-04-12 22:26:13.000000000 +1000
+++ linux-2.6/drivers/block/ll_rw_blk.c 2005-04-12 22:26:14.000000000 +1000
@@ -1955,7 +1955,6 @@ static struct request *get_request_wait(
DEFINE_WAIT(wait);
struct request *rq;
- generic_unplug_device(q);
do {
struct request_list *rl = &q->rq;
@@ -1967,6 +1966,7 @@ static struct request *get_request_wait(
if (!rq) {
struct io_context *ioc;
+ generic_unplug_device(q);
io_schedule();
/*
next prev parent reply other threads:[~2005-04-12 13:02 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-12 12:43 [patch 0/9] various (mainly mempool fixes and block layer improvements) Nick Piggin
2005-04-12 12:48 ` [patch 1/9] GFP_ZERO fix Nick Piggin
2005-04-12 19:47 ` Andrew Morton
2005-04-13 1:02 ` Nick Piggin
2005-04-14 10:59 ` Manfred Spraul
2005-04-12 12:48 ` [patch 2/9] mempool gfp flag Nick Piggin
2005-04-12 19:50 ` Andrew Morton
2005-04-13 1:03 ` Nick Piggin
2005-04-12 12:49 ` [patch 3/9] no PF_MEMALLOC tinkering Nick Piggin
2005-04-12 19:57 ` Andrew Morton
2005-04-13 1:13 ` Nick Piggin
2005-04-12 12:49 ` [patch 4/9] blk: no memory barrier Nick Piggin
2005-04-12 12:50 ` [patch 5/9] blk: branch hints Nick Piggin
2005-04-12 12:50 ` Nick Piggin [this message]
2005-04-12 19:58 ` [patch 6/9] blk: unplug later Andrew Morton
2005-04-13 1:32 ` Nick Piggin
2005-04-13 10:20 ` Jens Axboe
2005-04-12 12:51 ` [patch 7/9] blk: efficiency improvements Nick Piggin
2005-04-12 12:52 ` [patch 0/9] blk: reduce locking Nick Piggin
2005-04-12 12:53 ` [patch doh/9] mempool simplify alloc Nick Piggin
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