From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Andi Kleen <ak@suse.de>
Cc: Hugh Dickins <hugh@veritas.com>, Andrew Morton <akpm@osdl.org>,
David Howells <dhowells@redhat.com>,
Christoph Lameter <christoph@lameter.com>,
Martin Bligh <mbligh@google.com>, Nick Piggin <npiggin@suse.de>,
Linus Torvalds <torvalds@osdl.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/6] mm: tracking shared dirty pages
Date: Tue, 13 Jun 2006 14:15:14 +0200 [thread overview]
Message-ID: <1150200914.20886.135.camel@lappy> (raw)
In-Reply-To: <p73zmghqn2z.fsf@verdi.suse.de>
On Tue, 2006-06-13 at 14:03 +0200, Andi Kleen wrote:
> Peter Zijlstra <a.p.zijlstra@chello.nl> writes:
>
> > From: Peter Zijlstra <a.p.zijlstra@chello.nl>
> >
> > People expressed the need to track dirty pages in shared mappings.
>
> Why only shared mappings? Anonymous pages can be dirty too
> and would need to be written to swap then before making progress.
Anonymous pages are per definition dirty, as they don't have a
persistent backing store. Each eviction of an anonymous page requires IO
to swap space. On swap-in pages are removed from the swap space to make
place for other pages.
Peter
next prev parent reply other threads:[~2006-06-13 12:15 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-13 11:21 [PATCH 0/6] mm: tracking dirty pages -v8 Peter Zijlstra
2006-06-13 11:21 ` [PATCH 1/6] mm: tracking shared dirty pages Peter Zijlstra
2006-06-13 12:03 ` Andi Kleen
2006-06-13 12:15 ` Peter Zijlstra [this message]
2006-06-13 12:24 ` Nick Piggin
2006-06-13 11:21 ` [PATCH 2/6] mm: balance " Peter Zijlstra
2006-06-13 11:21 ` [PATCH 3/6] mm: msync() cleanup Peter Zijlstra
2006-06-13 11:22 ` [PATCH 4/6] mm: optimize the new mprotect() code a bit Peter Zijlstra
2006-06-13 11:22 ` [PATCH 5/6] mm: small cleanup of install_page() Peter Zijlstra
2006-06-13 11:22 ` [PATCH 6/6] mm: remove some update_mmu_cache() calls Peter Zijlstra
2006-06-13 11:22 ` [PATCH 7/6] mm: page_mkwrite Peter Zijlstra
2006-06-19 17:52 [PATCH 0/6] mm: tracking dirty pages -v9 Peter Zijlstra
2006-06-19 17:52 ` [PATCH 1/6] mm: tracking shared dirty pages Peter Zijlstra
2006-06-22 5:56 ` Andrew Morton
2006-06-22 6:07 ` Christoph Lameter
2006-06-22 6:15 ` Andrew Morton
2006-06-22 11:33 ` Peter Zijlstra
2006-06-22 13:17 ` Hugh Dickins
2006-06-22 20:52 ` Hugh Dickins
2006-06-22 23:02 ` Peter Zijlstra
2006-06-28 20:17 [PATCH 0/6] mm: tracking dirty pages -v14 Peter Zijlstra
2006-06-28 20:17 ` [PATCH 1/6] mm: tracking shared dirty pages Peter Zijlstra
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