From: glebn@voltaire.com (Gleb Natapov)
To: Christoph Lameter <clameter@sgi.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>,
linux-mm <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>,
Andi Kleen <ak@suse.de>
Subject: Re: [PATCH] Document Linux Memory Policy
Date: Thu, 31 May 2007 09:18:36 +0300 [thread overview]
Message-ID: <20070531061836.GL4715@minantech.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0705301042320.1195@schroedinger.engr.sgi.com>
On Wed, May 30, 2007 at 10:56:17AM -0700, Christoph Lameter wrote:
> > You don't get COW if it's a shared mapping. You use the page cache
> > pages which ignores my mbind(). That's my beef! [;-)]
>
> page cache pages are subject to a tasks memory policy regardless of how we
> get to the page cache page. I think that is pretty consistent.
>
I am a little bit confused here. If two processes mmap some file with
MAP_SHARED and each one marks different part of the file with
numa_setlocal_memory() (and suppose that no pages were faulted in for
this file yet). Now first process touches a part of the file that was
marked local by second process. Will faulted page be placed in first
process' local memory or second? I surely expect later, but it seems I
am wrong.
--
Gleb.
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next prev parent reply other threads:[~2007-05-31 6:18 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-29 19:33 [PATCH] Document Linux Memory Policy Lee Schermerhorn
2007-05-29 20:04 ` Christoph Lameter
2007-05-29 20:16 ` Andi Kleen
2007-05-30 16:17 ` Lee Schermerhorn
2007-05-30 17:41 ` Christoph Lameter
2007-05-31 8:20 ` Michael Kerrisk
2007-05-31 14:49 ` Lee Schermerhorn
2007-05-31 15:56 ` Michael Kerrisk
2007-06-01 21:15 ` [PATCH] enhance memory policy sys call man pages v1 Lee Schermerhorn
2007-07-23 6:11 ` Michael Kerrisk
2007-07-23 6:32 ` mbind.2 man page patch Michael Kerrisk
2007-07-23 14:26 ` Lee Schermerhorn
2007-07-26 17:19 ` Michael Kerrisk
2007-07-26 18:06 ` Lee Schermerhorn
2007-07-26 18:18 ` Michael Kerrisk
2007-07-23 6:32 ` get_mempolicy.2 " Michael Kerrisk
2007-07-28 9:31 ` Michael Kerrisk
2007-08-09 18:43 ` Lee Schermerhorn
2007-08-09 20:57 ` Michael Kerrisk
2007-08-16 20:05 ` Andi Kleen
2007-08-18 5:50 ` Michael Kerrisk
2007-08-21 15:45 ` Lee Schermerhorn
2007-08-22 4:10 ` Michael Kerrisk
2007-08-22 16:08 ` [PATCH] Mempolicy Man Pages 2.64 1/3 - mbind.2 Lee Schermerhorn
2007-08-27 11:29 ` Michael Kerrisk
2007-08-22 16:10 ` [PATCH] Mempolicy Man Pages 2.64 2/3 - set_mempolicy.2 Lee Schermerhorn
2007-08-27 11:30 ` Michael Kerrisk
2007-08-22 16:12 ` [PATCH] Mempolicy Man Pages 2.64 3/3 - get_mempolicy.2 Lee Schermerhorn
2007-08-27 11:30 ` Michael Kerrisk
2007-08-27 10:46 ` get_mempolicy.2 man page patch Michael Kerrisk
2007-07-23 6:33 ` set_mempolicy.2 " Michael Kerrisk
2007-05-30 16:55 ` [PATCH] Document Linux Memory Policy Lee Schermerhorn
2007-05-30 17:56 ` Christoph Lameter
2007-05-31 6:18 ` Gleb Natapov [this message]
2007-05-31 6:41 ` Christoph Lameter
2007-05-31 6:47 ` Gleb Natapov
2007-05-31 6:56 ` Christoph Lameter
2007-05-31 7:11 ` Gleb Natapov
2007-05-31 7:24 ` Christoph Lameter
2007-05-31 7:39 ` Gleb Natapov
2007-05-31 17:43 ` Christoph Lameter
2007-05-31 17:07 ` Lee Schermerhorn
2007-05-31 10:43 ` Andi Kleen
2007-05-31 11:04 ` Gleb Natapov
2007-05-31 11:30 ` Gleb Natapov
2007-05-31 15:26 ` Lee Schermerhorn
2007-05-31 17:41 ` Gleb Natapov
2007-05-31 18:56 ` Lee Schermerhorn
2007-05-31 20:06 ` Gleb Natapov
2007-05-31 20:43 ` Andi Kleen
2007-06-01 9:38 ` Gleb Natapov
2007-06-01 10:21 ` Andi Kleen
2007-06-01 12:25 ` Gleb Natapov
2007-06-01 13:09 ` Andi Kleen
2007-06-01 17:15 ` Lee Schermerhorn
2007-06-01 18:43 ` Christoph Lameter
2007-06-01 19:38 ` Lee Schermerhorn
2007-06-01 19:48 ` Christoph Lameter
2007-06-01 21:05 ` Lee Schermerhorn
2007-06-01 21:56 ` Christoph Lameter
2007-06-04 13:46 ` Lee Schermerhorn
2007-06-04 16:34 ` Christoph Lameter
2007-06-04 17:02 ` Lee Schermerhorn
2007-06-04 17:11 ` Christoph Lameter
2007-06-04 20:23 ` Andi Kleen
2007-06-04 21:51 ` Christoph Lameter
2007-06-05 14:30 ` Lee Schermerhorn
2007-06-01 20:28 ` Gleb Natapov
2007-06-01 20:45 ` Christoph Lameter
2007-06-01 21:10 ` Lee Schermerhorn
2007-06-01 21:58 ` Christoph Lameter
2007-06-02 7:23 ` Gleb Natapov
2007-05-31 11:47 ` Andi Kleen
2007-05-31 11:59 ` Gleb Natapov
2007-05-31 12:15 ` Andi Kleen
2007-05-31 12:18 ` Gleb Natapov
2007-05-31 18:28 ` Lee Schermerhorn
2007-05-31 18:35 ` Christoph Lameter
2007-05-31 19:29 ` Lee Schermerhorn
2007-05-31 19:25 ` Paul Jackson
2007-05-31 20:22 ` Lee Schermerhorn
2007-05-29 20:07 ` Andi Kleen
2007-05-30 16:04 ` Lee Schermerhorn
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