From: Linus Torvalds <torvalds@linux-foundation.org>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>,
npiggin@suse.de,
"hugh.dickins@tiscali.co.uk" <hugh.dickins@tiscali.co.uk>,
avi@redhat.com,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>
Subject: Re: [RFC][PATCH 3/4] get_user_pages READ fault handling special cases
Date: Tue, 7 Jul 2009 19:27:45 -0700 (PDT) [thread overview]
Message-ID: <alpine.LFD.2.01.0907071927150.3210@localhost.localdomain> (raw)
In-Reply-To: <20090708103807.ae17396a.kamezawa.hiroyu@jp.fujitsu.com>
On Wed, 8 Jul 2009, KAMEZAWA Hiroyuki wrote:
>
> Is there a special reason to have to account zero page as file_rss ?
> If not, pte_special() solution works well. (I think not necessary..)
I would suggest _not_ accounting the zero page. After all, it doesn't
actually use any memory.
Linus
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next prev parent reply other threads:[~2009-07-08 2:22 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-07 7:51 [RFC][PATCH 0/4] ZERO PAGE again v2 KAMEZAWA Hiroyuki
2009-07-07 7:52 ` [RFC][PATCH 1/4] introduce pte_zero() KAMEZAWA Hiroyuki
2009-07-07 7:54 ` [RFC][PATCH 2/4] use ZERO_PAGE for READ fault in regular anonymous mapping KAMEZAWA Hiroyuki
2009-07-07 7:59 ` [RFC][PATCH 3/4] get_user_pages READ fault handling special cases KAMEZAWA Hiroyuki
2009-07-07 16:50 ` Linus Torvalds
2009-07-08 0:03 ` KAMEZAWA Hiroyuki
2009-07-08 1:38 ` KAMEZAWA Hiroyuki
2009-07-08 2:27 ` Linus Torvalds [this message]
2009-07-07 8:01 ` [RFC][PATCH 4/4] add get user pages nozero KAMEZAWA Hiroyuki
2009-07-07 8:47 ` [RFC][PATCH 0/4] ZERO PAGE again v2 Nick Piggin
2009-07-07 9:05 ` Avi Kivity
2009-07-07 9:18 ` KAMEZAWA Hiroyuki
2009-07-07 9:26 ` Avi Kivity
2009-07-07 9:06 ` KAMEZAWA Hiroyuki
2009-07-07 14:00 ` Nick Piggin
2009-07-07 16:59 ` Linus Torvalds
2009-07-08 6:21 ` Nick Piggin
2009-07-08 16:07 ` Linus Torvalds
2009-07-09 7:47 ` Nick Piggin
2009-07-09 17:54 ` Linus Torvalds
2009-07-10 2:09 ` Nick Piggin
2009-07-10 3:38 ` Linus Torvalds
2009-07-10 3:51 ` Nick Piggin
2009-07-08 17:32 ` Andrea Arcangeli
2009-07-09 1:12 ` KAMEZAWA Hiroyuki
2009-07-10 11:18 ` Hugh Dickins
2009-07-10 13:42 ` Andrea Arcangeli
2009-07-10 14:12 ` KAMEZAWA Hiroyuki
2009-07-10 15:16 ` Andrea Arcangeli
2009-07-10 15:32 ` KAMEZAWA Hiroyuki
2009-07-10 17:09 ` Hugh Dickins
2009-07-13 6:46 ` Nick Piggin
2009-07-13 7:24 ` Nick Piggin
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