From: Linus Torvalds <torvalds@linux-foundation.org>
To: Nick Piggin <npiggin@suse.de>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"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 0/4] ZERO PAGE again v2
Date: Thu, 9 Jul 2009 20:38:41 -0700 (PDT) [thread overview]
Message-ID: <alpine.LFD.2.01.0907092034360.3352@localhost.localdomain> (raw)
In-Reply-To: <20090710020920.GB15903@wotan.suse.de>
On Fri, 10 Jul 2009, Nick Piggin wrote:
>
> So if you were going to re-add the zero page when a single regression
> is reported after a year or two, then it was wrong of you to remove
> the zero page to begin with.
Oh, I argued against it. And I told people we can always revert it.
But even better than reverting it is to just fix it cleanly in the new
world order, wouldn't you say?
> So to answer your question, I guess I would like to know a bit
> more about the regression and what the app is doing.
Ok, go ahead and try to figure it out. But please don't cc me on it any
more. I'm not interested in your hang-ups with ZERO_PAGE.
Because I just don't care. I think ZERO_PAGE was great to begin with, I
put it to use muyself historically at Transmeta, and I didn't like your
crusade against it.
People (including me) have told you why it's useful. Whatever. If you
still want more information, go bother somebody else.
Linus
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next prev parent reply other threads:[~2009-07-10 3:17 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 [this message]
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
-- strict thread matches above, loose matches on Subject: below --
2009-07-07 15:50 KAMEZAWA Hiroyuki
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