From: Christoph Lameter <clameter@sgi.com>
To: Andrew Morton <akpm@osdl.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>,
piggin@cyberone.com.au, torvalds@osdl.org, ak@suse.de,
rohitseth@google.com, mbligh@google.com, hugh@veritas.com,
riel@redhat.com, andrea@suse.de, arjan@infradead.org,
apw@shadowen.org, mel@csn.ul.ie, marcelo@kvack.org,
anton@samba.org, paulmck@us.ibm.com, linux-mm@kvack.org
Subject: Re: [RFC][PATCH 1/3] tracking dirty pages in shared mappings -V4
Date: Thu, 11 May 2006 21:51:28 -0700 (PDT) [thread overview]
Message-ID: <Pine.LNX.4.64.0605112146470.17921@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <20060511080220.48688b40.akpm@osdl.org>
On Thu, 11 May 2006, Andrew Morton wrote:
> So let's see. We take a write fault, we mark the page dirty then we return
> to userspace which will proceed with the write and will mark the pte dirty.
The pte is marked dirty when the page is marked dirty.
> Later still, the pte will get cleaned by reclaim or by munmap or whatever
> and the page will be marked dirty and the page will again be written out.
> Potentially needlessly.
But consistent with the way write() works on page buffers. It is rather
surprising that one can dirty lots of mmapped pages and they are only
written out when the process terminates.
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next prev parent reply other threads:[~2006-05-12 4:51 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-05 20:35 [RFC][PATCH] tracking dirty pages in shared mappings Peter Zijlstra
2006-05-06 13:18 ` Nick Piggin
2006-05-06 13:34 ` Peter Zijlstra
2006-05-06 13:47 ` Nick Piggin
2006-05-06 15:29 ` Peter Zijlstra
2006-05-07 0:40 ` Nick Piggin
2006-05-07 3:43 ` Nick Piggin
2006-05-08 6:43 ` Christoph Lameter
2006-05-08 7:23 ` Peter Zijlstra
2006-05-08 19:20 ` [RFC][PATCH 1/2] tracking dirty pages in shared mappings -V3 Peter Zijlstra
2006-05-09 5:41 ` Christoph Lameter
2006-05-09 6:06 ` Peter Zijlstra
2006-05-09 20:44 ` [RFC][PATCH 1/3] tracking dirty pages in shared mappings -V4 Peter Zijlstra
2006-05-09 20:52 ` Peter Chubb
2006-05-09 20:55 ` Martin Bligh
2006-05-09 22:56 ` Brian Twichell
2006-05-10 0:24 ` Linus Torvalds
2006-05-10 0:29 ` Nick Piggin
2006-05-10 1:24 ` Linus Torvalds
2006-05-11 15:02 ` Andrew Morton
2006-05-11 16:39 ` Andy Whitcroft
2006-05-11 22:52 ` Christoph Lameter
2006-05-11 23:30 ` Linus Torvalds
2006-05-11 23:44 ` Andrew Morton
2006-05-12 0:10 ` Linus Torvalds
2006-05-12 8:07 ` Andy Whitcroft
2006-05-12 14:25 ` Martin J. Bligh
2006-05-14 15:58 ` Andy Whitcroft
2006-05-12 1:51 ` Nick Piggin
2006-05-12 4:30 ` Andrew Morton
2006-05-12 5:05 ` Nick Piggin
2006-05-12 7:06 ` Peter Zijlstra
2006-05-12 8:04 ` Nick Piggin
2006-05-12 8:52 ` Peter Zijlstra
2006-05-12 8:07 ` Nick Piggin
2006-05-12 4:51 ` Christoph Lameter [this message]
2006-05-09 20:44 ` [RFC][PATCH 2/3] throttle writers of shared mappings Peter Zijlstra
2006-05-09 22:54 ` Nick Piggin
2006-05-09 22:55 ` Nick Piggin
2006-05-10 6:25 ` Peter Zijlstra
2006-05-09 20:44 ` [RFC][PATCH 3/3] optimize follow_pages() Peter Zijlstra
2006-05-10 6:30 ` Peter Zijlstra
2006-05-08 19:24 ` [RFC][PATCH 2/2] throttle writers of shared mappings Peter Zijlstra
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