From: Wu Fengguang <fengguang.wu@intel.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Theodore Ts'o <tytso@mit.edu>, Jan Kara <jack@suse.cz>,
Wu Fengguang <fengguang.wu@intel.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Rik van Riel <riel@redhat.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: linux-mm <linux-mm@kvack.org>
Cc: <linux-fsdevel@vger.kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH 05/13] writeback: account per-bdi accumulated written pages
Date: Wed, 17 Nov 2010 11:58:26 +0800 [thread overview]
Message-ID: <20101117035905.996115619@intel.com> (raw)
Andrew,
References: <20101117035821.000579293@intel.com>
Content-Disposition: inline; filename=writeback-bdi-written.patch
From: Jan Kara <jack@suse.cz>
Introduce the BDI_WRITTEN counter. It will be used for estimating the
bdi's write bandwidth.
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
---
include/linux/backing-dev.h | 1 +
mm/backing-dev.c | 6 ++++--
mm/page-writeback.c | 1 +
3 files changed, 6 insertions(+), 2 deletions(-)
--- linux-next.orig/include/linux/backing-dev.h 2010-11-16 22:48:28.000000000 +0800
+++ linux-next/include/linux/backing-dev.h 2010-11-17 00:18:56.000000000 +0800
@@ -40,6 +40,7 @@ typedef int (congested_fn)(void *, int);
enum bdi_stat_item {
BDI_RECLAIMABLE,
BDI_WRITEBACK,
+ BDI_WRITTEN,
NR_BDI_STAT_ITEMS
};
--- linux-next.orig/mm/backing-dev.c 2010-11-16 22:48:28.000000000 +0800
+++ linux-next/mm/backing-dev.c 2010-11-17 00:18:56.000000000 +0800
@@ -92,6 +92,7 @@ static int bdi_debug_stats_show(struct s
"BdiDirtyThresh: %8lu kB\n"
"DirtyThresh: %8lu kB\n"
"BackgroundThresh: %8lu kB\n"
+ "BdiWritten: %8lu kB\n"
"b_dirty: %8lu\n"
"b_io: %8lu\n"
"b_more_io: %8lu\n"
@@ -99,8 +100,9 @@ static int bdi_debug_stats_show(struct s
"state: %8lx\n",
(unsigned long) K(bdi_stat(bdi, BDI_WRITEBACK)),
(unsigned long) K(bdi_stat(bdi, BDI_RECLAIMABLE)),
- K(bdi_thresh), K(dirty_thresh),
- K(background_thresh), nr_dirty, nr_io, nr_more_io,
+ K(bdi_thresh), K(dirty_thresh), K(background_thresh),
+ (unsigned long) K(bdi_stat(bdi, BDI_WRITTEN)),
+ nr_dirty, nr_io, nr_more_io,
!list_empty(&bdi->bdi_list), bdi->state);
#undef K
--- linux-next.orig/mm/page-writeback.c 2010-11-17 00:18:54.000000000 +0800
+++ linux-next/mm/page-writeback.c 2010-11-17 00:18:56.000000000 +0800
@@ -1292,6 +1292,7 @@ int test_clear_page_writeback(struct pag
PAGECACHE_TAG_WRITEBACK);
if (bdi_cap_account_writeback(bdi)) {
__dec_bdi_stat(bdi, BDI_WRITEBACK);
+ __inc_bdi_stat(bdi, BDI_WRITTEN);
__bdi_writeout_inc(bdi);
}
}
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next reply other threads:[~2010-11-17 3:58 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-17 3:58 Wu Fengguang [this message]
-- strict thread matches above, loose matches on Subject: below --
2010-11-17 4:27 [PATCH 00/13] IO-less dirty throttling v2 Wu Fengguang
2010-11-17 4:27 ` [PATCH 05/13] writeback: account per-bdi accumulated written pages Wu Fengguang
2010-11-24 10:26 ` Peter Zijlstra
2010-11-24 10:44 ` Wu Fengguang
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