From: Wu Fengguang <fengguang.wu@intel.com>
To: <linux-fsdevel@vger.kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>, Jan Kara <jack@suse.cz>,
Michael Rubin <mrubin@google.com>,
Wu Fengguang <fengguang.wu@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Andrea Righi <arighi@develer.com>
Cc: linux-mm <linux-mm@kvack.org>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH 01/10] writeback: account per-bdi accumulated dirtied pages
Date: Fri, 26 Aug 2011 19:38:14 +0800 [thread overview]
Message-ID: <20110826114618.744796470@intel.com> (raw)
In-Reply-To: 20110826113813.895522398@intel.com
[-- Attachment #1: writeback-bdi-dirtied.patch --]
[-- Type: text/plain, Size: 2322 bytes --]
Introduce the BDI_DIRTIED counter. It will be used for estimating the
bdi's dirty bandwidth.
CC: Jan Kara <jack@suse.cz>
CC: Michael Rubin <mrubin@google.com>
CC: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
include/linux/backing-dev.h | 1 +
mm/backing-dev.c | 2 ++
mm/page-writeback.c | 1 +
3 files changed, 4 insertions(+)
--- linux-next.orig/include/linux/backing-dev.h 2011-08-16 09:30:23.000000000 +0800
+++ linux-next/include/linux/backing-dev.h 2011-08-17 10:15:45.000000000 +0800
@@ -40,6 +40,7 @@ typedef int (congested_fn)(void *, int);
enum bdi_stat_item {
BDI_RECLAIMABLE,
BDI_WRITEBACK,
+ BDI_DIRTIED,
BDI_WRITTEN,
NR_BDI_STAT_ITEMS
};
--- linux-next.orig/mm/page-writeback.c 2011-08-16 09:30:23.000000000 +0800
+++ linux-next/mm/page-writeback.c 2011-08-17 20:35:22.000000000 +0800
@@ -1333,6 +1333,7 @@ void account_page_dirtied(struct page *p
__inc_zone_page_state(page, NR_FILE_DIRTY);
__inc_zone_page_state(page, NR_DIRTIED);
__inc_bdi_stat(mapping->backing_dev_info, BDI_RECLAIMABLE);
+ __inc_bdi_stat(mapping->backing_dev_info, BDI_DIRTIED);
task_dirty_inc(current);
task_io_account_write(PAGE_CACHE_SIZE);
}
--- linux-next.orig/mm/backing-dev.c 2011-08-16 09:30:23.000000000 +0800
+++ linux-next/mm/backing-dev.c 2011-08-17 10:15:45.000000000 +0800
@@ -97,6 +97,7 @@ static int bdi_debug_stats_show(struct s
"BdiDirtyThresh: %10lu kB\n"
"DirtyThresh: %10lu kB\n"
"BackgroundThresh: %10lu kB\n"
+ "BdiDirtied: %10lu kB\n"
"BdiWritten: %10lu kB\n"
"BdiWriteBandwidth: %10lu kBps\n"
"b_dirty: %10lu\n"
@@ -109,6 +110,7 @@ static int bdi_debug_stats_show(struct s
K(bdi_thresh),
K(dirty_thresh),
K(background_thresh),
+ (unsigned long) K(bdi_stat(bdi, BDI_DIRTIED)),
(unsigned long) K(bdi_stat(bdi, BDI_WRITTEN)),
(unsigned long) K(bdi->write_bandwidth),
nr_dirty,
--
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next prev parent reply other threads:[~2011-08-26 11:38 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-26 11:38 [PATCH 00/10] IO-less dirty throttling v10 Wu Fengguang
2011-08-26 11:38 ` Wu Fengguang [this message]
2011-08-26 11:38 ` [PATCH 02/10] writeback: dirty position control Wu Fengguang
2011-08-26 11:38 ` [PATCH 03/10] writeback: dirty rate control Wu Fengguang
2011-08-26 11:38 ` [PATCH 04/10] writeback: stabilize bdi->dirty_ratelimit Wu Fengguang
2011-08-26 11:38 ` [PATCH 05/10] writeback: per task dirty rate limit Wu Fengguang
2011-08-26 12:51 ` Peter Zijlstra
2011-08-26 12:59 ` Wu Fengguang
2011-08-26 11:38 ` [PATCH 06/10] writeback: IO-less balance_dirty_pages() Wu Fengguang
2011-08-26 11:38 ` [PATCH 07/10] writeback: dirty ratelimit - think time compensation Wu Fengguang
2011-08-26 12:05 ` Wu Fengguang
2011-08-26 11:38 ` [PATCH 08/10] writeback: trace balance_dirty_pages Wu Fengguang
2011-08-26 12:07 ` Wu Fengguang
2011-08-26 11:38 ` [PATCH 09/10] writeback: trace dirty_ratelimit Wu Fengguang
2011-08-26 11:38 ` [PATCH 10/10] trace task_io Wu Fengguang
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