From: Andrea Arcangeli <aarcange@redhat.com>
To: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Nick Piggin <npiggin@suse.de>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
avi@redhat.com, akpm@linux-foundation.org,
torvalds@linux-foundation.org
Subject: Re: [RFC][PATCH 0/4] ZERO PAGE again v2
Date: Fri, 10 Jul 2009 15:42:28 +0200 [thread overview]
Message-ID: <20090710134228.GX356@random.random> (raw)
In-Reply-To: <Pine.LNX.4.64.0907101201280.2456@sister.anvils>
On Fri, Jul 10, 2009 at 12:18:07PM +0100, Hugh Dickins wrote:
> as an "automatic" KSM page, I don't know; or we'll need to teach KSM
> not to waste its time remerging instances of the ZERO_PAGE to a
> zeroed KSM page. We'll worry about that once both sets in mmotm.
There is no risk of collision, zero page is not anonymous so...
I think it's a mistake for them not to try ksm first regardless of the
new zeropage patches being floating around, because my whole point is
that those kind of apps will save more than just zero page with
ksm. Sure not guaranteed... but possible and worth checking.
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next prev parent reply other threads:[~2009-07-10 13:17 UTC|newest]
Thread overview: 34+ 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
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 [this message]
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
-- strict thread matches above, loose matches on Subject: below --
2009-07-07 15:50 KAMEZAWA Hiroyuki
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