From: Christoph Lameter <clameter@sgi.com>
To: Rik van Riel <riel@redhat.com>
Cc: Hugh Dickins <hugh@veritas.com>,
Andrew Morton <akpm@linux-foundation.org>,
Andi Kleen <ak@suse.de>,
Lee Schermerhorn <Lee.Schermerhorn@hp.com>,
linux-mm@kvack.org
Subject: Re: [PATCH 1/7] swapin_readahead: excise NUMA bogosity
Date: Mon, 8 Oct 2007 10:52:35 -0700 (PDT) [thread overview]
Message-ID: <Pine.LNX.4.64.0710081049460.29444@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <20071008134744.4b03f7e1@bree.surriel.com>
On Mon, 8 Oct 2007, Rik van Riel wrote:
> > I am not sure what you mean by "another task's memory"? How does
> > memory become owned by a task?
>
> Swapin_readahead simply reads in all swap pages that are physically
> close to the desired one from the swap area, without taking into
> account whether or not the swap entry belongs to the current task
> or others.
That is the same approach used by regular readahead. Lee will only get
back later in the week. He should take a look at this since he is trying
to sort out the memory policy issues.
But that is more at the level of conceptual stuff that needs cleaning up
The patch is okay from what I can see.
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next prev parent reply other threads:[~2007-10-08 17:52 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-06 20:35 [PATCH 0/7] swapin/shmem patches Hugh Dickins
2007-10-06 20:38 ` [PATCH 1/7] swapin_readahead: excise NUMA bogosity Hugh Dickins
2007-10-06 22:43 ` Rik van Riel
2007-10-07 22:05 ` Andi Kleen
2007-10-07 22:37 ` Rik van Riel
2007-10-08 17:31 ` Christoph Lameter
2007-10-08 17:35 ` Rik van Riel
2007-10-08 17:41 ` Christoph Lameter
2007-10-08 17:47 ` Rik van Riel
2007-10-08 17:52 ` Christoph Lameter [this message]
2007-10-08 18:48 ` Rik van Riel
2007-10-06 20:39 ` [PATCH 2/7] swapin_readahead: move and rearrange args Hugh Dickins
2007-10-07 2:26 ` Rik van Riel
2007-10-06 20:43 ` [PATCH 3/7] swapin needs gfp_mask for loop on tmpfs Hugh Dickins
2007-10-07 23:23 ` Rik van Riel
2007-10-08 13:52 ` Peter Zijlstra
2007-10-06 20:45 ` [PATCH 4/7] shmem: SGP_QUICK and SGP_FAULT redundant Hugh Dickins
2007-10-07 23:23 ` Rik van Riel
2007-10-06 20:46 ` [PATCH 5/7] shmem_getpage return page locked Hugh Dickins
2007-10-07 8:01 ` Nick Piggin
2007-10-08 12:05 ` Hugh Dickins
2007-10-08 7:08 ` Nick Piggin
2007-10-08 0:44 ` Rik van Riel
2007-10-06 20:47 ` [PATCH 6/7] shmem_file_write is redundant Hugh Dickins
2007-10-08 0:46 ` Rik van Riel
2007-10-06 20:48 ` [PATCH 7/7] swapin: fix valid_swaphandles defect Hugh Dickins
2007-10-08 1:14 ` Rik van Riel
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