From: Fengguang Wu <wfg@mail.ustc.edu.cn>
To: Jens Axboe <axboe@suse.de>
Cc: linux-kernel@vger.kernel.org, Andrew Morton <akpm@osdl.org>,
Nick Piggin <nickpiggin@yahoo.com.au>,
Lubos Lunak <l.lunak@suse.cz>,
Wu Fengguang <wfg@mail.ustc.edu.cn>
Subject: [PATCH 6/7] iosched: run elv_kick_page() on sync read
Date: Sat, 24 Jun 2006 10:04:04 +0800 [thread overview]
Message-ID: <351116973.29400@ustc.edu.cn> (raw)
Message-ID: <20060624024259.383733317@localhost.localdomain> (raw)
In-Reply-To: 20060624020358.719251923@localhost.localdomain
[-- Attachment #1: iosched-kick-page-on-sync-read.patch --]
[-- Type: text/plain, Size: 939 bytes --]
Call elv_kick_page() to notify the elevator of a pending read.
Requests of priority IOPRIO_CLASS_IDLE are ignored.
Signed-off-by: Wu Fengguang <wfg@mail.ustc.edu.cn>
---
--- linux-2.6.17-rc5-mm3.orig/block/ll_rw_blk.c
+++ linux-2.6.17-rc5-mm3/block/ll_rw_blk.c
@@ -1619,6 +1619,9 @@ static void blk_backing_dev_unplug(struc
{
request_queue_t *q = bdi->unplug_io_data;
+ if (IOPRIO_PRIO_CLASS(current->ioprio) != IOPRIO_CLASS_IDLE)
+ elv_kick_page(q, page);
+
/*
* devices don't necessarily have an ->unplug_fn defined
*/
--- linux-2.6.17-rc5-mm3.orig/fs/buffer.c
+++ linux-2.6.17-rc5-mm3/fs/buffer.c
@@ -63,8 +63,9 @@ static int sync_buffer(void *word)
smp_mb();
bd = bh->b_bdev;
- if (bd)
- blk_run_address_space(bd->bd_inode->i_mapping);
+ if (bd && bd->bd_inode && bd->bd_inode->i_mapping)
+ blk_run_backing_dev(bd->bd_inode->i_mapping->backing_dev_info,
+ bh->b_page);
io_schedule();
return 0;
}
--
next prev parent reply other threads:[~2006-06-24 2:44 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20060624020358.719251923@localhost.localdomain>
2006-06-24 2:03 ` [PATCH 0/7] [RFC] iosched: make a difference between read/readahead requests Fengguang Wu
[not found] ` <20060624024257.216415573@localhost.localdomain>
2006-06-24 2:03 ` [PATCH 1/7] iosched: introduce WRITEA Fengguang Wu
[not found] ` <20060624024257.537043377@localhost.localdomain>
2006-06-24 2:04 ` [PATCH 2/7] iosched: introduce parameter deadline.reada_expire Fengguang Wu
[not found] ` <20060624024258.540944943@localhost.localdomain>
2006-06-24 2:04 ` [PATCH 4/7] iosched: submit READA requests on possible readahead code path Fengguang Wu
[not found] ` <20060624024259.383733317@localhost.localdomain>
2006-06-24 2:04 ` Fengguang Wu [this message]
[not found] ` <20060624024259.755490540@localhost.localdomain>
2006-06-24 2:04 ` [PATCH 7/7] iosched: introduce deadline_kick_page() Fengguang Wu
[not found] <20060625071036.241325936@localhost.localdomain>
[not found] ` <20060625071730.446923099@localhost.localdomain>
2006-06-25 7:10 ` [PATCH 6/7] iosched: run elv_kick_page() on sync read Fengguang Wu
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