From: Ray Bryant <raybry@sgi.com>
To: Steve Longerbeam <stevel@mvista.com>
Cc: Andi Kleen <ak@muc.de>,
Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>
Subject: Re: page migration patchset
Date: Tue, 11 Jan 2005 13:30:39 -0600 [thread overview]
Message-ID: <41E4295F.1010909@sgi.com> (raw)
In-Reply-To: <41E42268.5090404@mvista.com>
Steve Longerbeam wrote:
>
> isn't this already taken care of? read_swap_cache_async() is given
> a vma, and passes it to alloc_page_vma(). So if you have earlier
> changed the policy for that vma, the new policy will be used
> when allocating the page during the swap in.
>
> Steve
>
What if the policy associated with a vma is the default policy?
Then the page will be swapped in on the node that took the page
fault -- this is >>probably<< correct in most cases, but if a
page is accessed from several nodes, and predominately accessed
from a particular node, it can end up moving due to being swapped
out, and that is probably not what the application intended.
--
Best Regards,
Ray
-----------------------------------------------
Ray Bryant
512-453-9679 (work) 512-507-7807 (cell)
raybry@sgi.com raybry@austin.rr.com
The box said: "Requires Windows 98 or better",
so I installed Linux.
-----------------------------------------------
next prev parent reply other threads:[~2005-01-11 19:29 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-05 0:32 page migration patchset Ray Bryant
2005-01-05 2:07 ` Andi Kleen
2005-01-05 3:20 ` Ray Bryant
2005-01-05 18:41 ` Steve Longerbeam
2005-01-05 19:23 ` Ray Bryant
2005-01-05 23:00 ` Steve Longerbeam
2005-01-05 23:16 ` Ray Bryant
2005-01-05 20:55 ` Hugh Dickins
[not found] ` <41DC7EAD.8010407@mvista.com>
2005-01-06 14:43 ` Andi Kleen
2005-01-06 16:00 ` Ray Bryant
2005-01-06 17:50 ` Christoph Lameter
2005-01-06 19:29 ` Andi Kleen
2005-01-06 22:30 ` William Lee Irwin III
2005-01-06 23:08 ` Andrew Morton
2005-01-06 23:15 ` William Lee Irwin III
2005-01-06 23:21 ` Ray Bryant
2005-01-06 23:35 ` William Lee Irwin III
2005-01-06 23:53 ` Anton Blanchard
2005-01-07 0:06 ` William Lee Irwin III
2005-01-07 0:31 ` Andi Kleen
2005-01-06 23:43 ` Steve Longerbeam
2005-01-06 23:58 ` William Lee Irwin III
2005-01-11 15:38 ` Ray Bryant
2005-01-11 19:00 ` Steve Longerbeam
2005-01-11 19:30 ` Ray Bryant [this message]
2005-01-11 20:59 ` Steve Longerbeam
2005-01-12 12:35 ` Robin Holt
2005-01-12 18:12 ` Hugh Dickins
2005-01-12 18:45 ` Ray Bryant
2005-01-12 18:53 ` Andrew Morton
2005-01-14 13:55 ` swapspace layout improvements advocacy Tim Schmielau
2005-01-14 18:15 ` Andrew Morton
2005-01-14 22:52 ` Barry K. Nathan
2005-01-15 0:33 ` Alan Cox
2005-01-15 2:26 ` Tim Schmielau
2005-01-15 8:55 ` Pasi Savolainen
2005-01-06 20:59 page migration patchset Ray Bryant
2005-01-06 23:04 ` Andi Kleen
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