From: Christoph Hellwig <hch@infradead.org>
To: Curt Wohlgemuth <curtw@google.com>
Cc: Christoph Hellwig <hch@infradead.org>, Jan Kara <jack@suse.cz>,
linux-fsdevel@vger.kernel.org, linux-mm@kvack.org,
Wu Fengguang <fengguang.wu@intel.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH RFC 0/5] IO-less balance_dirty_pages() v2 (simple approach)
Date: Thu, 17 Mar 2011 12:43:54 -0400 [thread overview]
Message-ID: <20110317164354.GA26093@infradead.org> (raw)
In-Reply-To: <AANLkTikxEQfzFOrc1Kyu+eC8EnTpDfKYHNswLu+0AtZS@mail.gmail.com>
On Thu, Mar 17, 2011 at 09:24:28AM -0700, Curt Wohlgemuth wrote:
> Which is indeed part of the patchset I referred to above ("[RFC]
> [PATCH 0/6] Provide cgroup isolation for buffered writes",
> https://lkml.org/lkml/2011/3/8/332 ).
So what about letting us fix normal writeback first and then later look
into cgroups properly. And to do it properly we'll need to implement
something similar to the I/O less balance dirty pages - be that targeted
writeback from the flusher thread including proper tagging of pages,
or be that writeback from balance_dirty_pages in a why that we keep
multiple processes from writing at the same time. Although I'd prefer
something that keeps the CG case as close as possible to the normal
code, right now we already have a huge mess with memcg and it's own
handrolled version of direct reclaim which is an even worse stack
hog than the already overly painfull "normal" direct reclaim.
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next prev parent reply other threads:[~2011-03-17 16:44 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-08 22:31 [PATCH RFC 0/5] IO-less balance_dirty_pages() v2 (simple approach) Jan Kara
2011-03-08 22:31 ` [PATCH 1/5] writeback: account per-bdi accumulated written pages Jan Kara
2011-03-08 22:31 ` [PATCH 2/5] mm: Properly reflect task dirty limits in dirty_exceeded logic Jan Kara
2011-03-09 21:02 ` Vivek Goyal
2011-03-14 20:44 ` Jan Kara
2011-03-15 15:21 ` Vivek Goyal
2011-03-08 22:31 ` [PATCH 3/5] mm: Implement IO-less balance_dirty_pages() Jan Kara
2011-03-10 0:07 ` Vivek Goyal
2011-03-14 20:48 ` Jan Kara
2011-03-15 15:23 ` Vivek Goyal
2011-03-16 21:26 ` Curt Wohlgemuth
2011-03-16 22:53 ` Curt Wohlgemuth
2011-03-16 16:53 ` Vivek Goyal
2011-03-16 19:10 ` Jan Kara
2011-03-16 19:31 ` Vivek Goyal
2011-03-16 19:58 ` Jan Kara
2011-03-16 20:22 ` Vivek Goyal
2011-03-08 22:31 ` [PATCH 4/5] mm: Remove low limit from sync_writeback_pages() Jan Kara
2011-03-08 22:31 ` [PATCH 5/5] mm: Autotune interval between distribution of page completions Jan Kara
2011-03-17 15:46 ` [PATCH RFC 0/5] IO-less balance_dirty_pages() v2 (simple approach) Curt Wohlgemuth
2011-03-17 15:51 ` Christoph Hellwig
2011-03-17 16:24 ` Curt Wohlgemuth
2011-03-17 16:43 ` Christoph Hellwig [this message]
2011-03-17 17:32 ` Jan Kara
2011-03-17 18:55 ` Curt Wohlgemuth
2011-03-17 22:56 ` Vivek Goyal
2011-03-18 14:30 ` Wu Fengguang
2011-03-22 21:43 ` Jan Kara
2011-03-23 4:41 ` Dave Chinner
2011-03-25 12:59 ` Wu Fengguang
2011-03-25 13:44 ` Wu Fengguang
2011-03-25 23:05 ` Jan Kara
2011-03-28 2:44 ` Wu Fengguang
2011-03-28 15:08 ` Jan Kara
2011-03-29 1:44 ` Wu Fengguang
2011-03-29 2:14 ` Dave Chinner
2011-03-29 2:41 ` Wu Fengguang
2011-03-29 5:59 ` Dave Chinner
2011-03-29 7:31 ` Wu Fengguang
2011-03-29 7:52 ` Wu Fengguang
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