From: Christoph Lameter <cl@linux-foundation.org>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>,
Wu Fengguang <fengguang.wu@intel.com>,
Nigel Cunningham <ncunningham@crca.org.au>,
LKML <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: No more bits in vm_area_struct's vm_flags.
Date: Tue, 29 Sep 2009 10:22:16 -0400 (EDT) [thread overview]
Message-ID: <alpine.DEB.1.10.0909291019100.15549@gentwo.org> (raw)
In-Reply-To: <20090929105735.06eea1ee.kamezawa.hiroyu@jp.fujitsu.com>
Another concern that has not been discussed is the increased cache
footprint due to a slightly enlarged vm data working set (there is also a
corresponding icache issue since additional accesses are needed).
Could we stick with the current size and do combinations of flags like we
do with page flags? VM_HUGETLB cannot grow up and down f.e. and there are
certainly lots of other impossible combinations that can be used to put
more information into the flags.
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next prev parent reply other threads:[~2009-09-29 14:00 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4AB9A0D6.1090004@crca.org.au>
2009-09-23 20:23 ` Hugh Dickins
2009-09-25 8:30 ` Nigel Cunningham
2009-09-25 11:36 ` Hugh Dickins
2009-09-25 11:47 ` Nigel Cunningham
2009-09-30 12:02 ` Pavel Machek
2009-09-30 13:08 ` swsusp on nommu, was 'Re: No more bits in vm_area_struct's vm_flags.' Johannes Weiner
2009-09-30 16:06 ` Mike Frysinger
2009-09-24 1:05 ` No more bits in vm_area_struct's vm_flags KAMEZAWA Hiroyuki
2009-09-25 8:34 ` Nigel Cunningham
2009-09-25 8:40 ` KAMEZAWA Hiroyuki
2009-09-25 8:48 ` Nigel Cunningham
2009-09-25 21:09 ` Joerg Roedel
2009-09-28 2:45 ` Nigel Cunningham
2009-09-28 3:04 ` KAMEZAWA Hiroyuki
2009-09-28 3:36 ` Wu Fengguang
2009-09-28 3:57 ` KAMEZAWA Hiroyuki
2009-09-28 4:37 ` Nigel Cunningham
2009-09-28 4:51 ` Wu Fengguang
2009-09-28 4:53 ` KAMEZAWA Hiroyuki
2009-09-28 5:22 ` Nigel Cunningham
2009-09-28 5:32 ` KAMEZAWA Hiroyuki
2009-09-28 21:21 ` Hugh Dickins
2009-09-28 21:33 ` Nigel Cunningham
2009-09-28 15:38 ` Hugh Dickins
2009-09-28 16:14 ` KAMEZAWA Hiroyuki
2009-09-28 21:00 ` Hugh Dickins
2009-09-28 21:22 ` Nigel Cunningham
2009-09-29 1:57 ` KAMEZAWA Hiroyuki
2009-09-29 14:22 ` Christoph Lameter [this message]
2009-10-01 10:54 ` Hugh Dickins
2009-10-01 13:47 ` Christoph Lameter
2009-10-01 11:38 ` Hugh Dickins
2009-10-02 0:42 ` KAMEZAWA Hiroyuki
2009-10-02 1:37 ` KAMEZAWA Hiroyuki
2009-10-02 2:39 ` KAMEZAWA Hiroyuki
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