From: Wu Fengguang <fengguang.wu@intel.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: Jan Kara <jack@suse.cz>, Dave Chinner <david@fromorbit.com>,
Andrew Morton <akpm@linux-foundation.org>,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"peterz@infradead.org" <peterz@infradead.org>
Subject: Re: [PATCH RFC] mm: Implement balance_dirty_pages() through waiting for flusher thread
Date: Tue, 22 Jun 2010 22:41:00 +0800 [thread overview]
Message-ID: <20100622144100.GB5477@localhost> (raw)
In-Reply-To: <20100622143124.GA15235@infradead.org>
On Tue, Jun 22, 2010 at 10:31:24PM +0800, Christoph Hellwig wrote:
> On Tue, Jun 22, 2010 at 09:52:34PM +0800, Wu Fengguang wrote:
> > 2) most writeback will be submitted by one per-bdi-flusher, so no worry
> > of cache bouncing (this also means the per CPU counter error is
> > normally bounded by the batch size)
>
> What counter are we talking about exactly? Once balanance_dirty_pages
bdi_stat(bdi, BDI_WRITTEN) introduced in this patch.
> stops submitting I/O the per-bdi flusher thread will in fact be
> the only thing submitting writeback, unless you count direct invocations
> of writeback_single_inode.
Right.
Thanks,
Fengguang
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next prev parent reply other threads:[~2010-06-22 14:41 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-17 18:04 [PATCH RFC] mm: Implement balance_dirty_pages() through waiting for flusher thread Jan Kara
2010-06-17 18:04 ` Jan Kara
2010-06-18 6:09 ` Dave Chinner
2010-06-18 9:11 ` Peter Zijlstra
2010-06-18 23:29 ` Dave Chinner
2010-06-21 23:36 ` Jan Kara
2010-06-22 5:44 ` Dave Chinner
2010-06-22 6:14 ` Andrew Morton
2010-06-22 7:45 ` Peter Zijlstra
2010-06-22 8:24 ` Andrew Morton
2010-06-22 8:52 ` Peter Zijlstra
2010-06-22 10:09 ` Dave Chinner
2010-06-22 13:17 ` Jan Kara
2010-06-22 13:17 ` Jan Kara
2010-06-22 13:52 ` Wu Fengguang
2010-06-22 13:52 ` Wu Fengguang
2010-06-22 13:59 ` Peter Zijlstra
2010-06-22 13:59 ` Peter Zijlstra
2010-06-22 14:00 ` Peter Zijlstra
2010-06-22 14:36 ` Wu Fengguang
2010-06-22 14:02 ` Jan Kara
2010-06-22 14:02 ` Jan Kara
2010-06-22 14:24 ` Wu Fengguang
2010-06-22 14:24 ` Wu Fengguang
2010-06-22 22:29 ` Dave Chinner
2010-06-23 13:15 ` Jan Kara
2010-06-23 13:15 ` Jan Kara
2010-06-23 23:06 ` Dave Chinner
2010-06-22 14:31 ` Christoph Hellwig
2010-06-22 14:31 ` Christoph Hellwig
2010-06-22 14:38 ` Jan Kara
2010-06-22 14:38 ` Jan Kara
2010-06-22 22:45 ` Dave Chinner
2010-06-23 1:34 ` Wu Fengguang
2010-06-23 1:34 ` Wu Fengguang
2010-06-23 3:06 ` Dave Chinner
2010-06-23 3:22 ` Wu Fengguang
2010-06-23 3:22 ` Wu Fengguang
2010-06-23 6:03 ` Dave Chinner
2010-06-23 6:03 ` Dave Chinner
2010-06-23 6:25 ` Wu Fengguang
2010-06-23 6:25 ` Wu Fengguang
2010-06-23 23:42 ` Dave Chinner
2010-06-23 23:42 ` Dave Chinner
2010-06-22 14:41 ` Wu Fengguang [this message]
2010-06-22 11:19 ` Jan Kara
2010-06-22 11:19 ` Jan Kara
2010-06-18 10:21 ` Peter Zijlstra
2010-06-21 13:31 ` Jan Kara
2010-06-18 10:21 ` Peter Zijlstra
2010-06-21 14:02 ` Jan Kara
2010-06-21 14:02 ` Jan Kara
2010-06-21 14:10 ` Jan Kara
2010-06-21 14:10 ` Jan Kara
2010-06-21 14:12 ` Peter Zijlstra
2010-06-18 10:21 ` Peter Zijlstra
2010-06-21 13:42 ` Jan Kara
2010-06-21 13:42 ` Jan Kara
2010-06-22 4:07 ` Wu Fengguang
2010-06-22 4:07 ` Wu Fengguang
2010-06-22 13:27 ` Jan Kara
2010-06-22 13:27 ` Jan Kara
2010-06-22 13:33 ` Wu Fengguang
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