From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Nick Piggin <npiggin@suse.de>
Cc: Miklos Szeredi <miklos@szeredi.hu>,
akpm@linux-foundation.org, mingo@elte.hu, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, benh@kernel.crashing.org
Subject: Re: [patch 4/6] mm: merge populate and nopage into fault (fixes nonlinear)
Date: Wed, 07 Mar 2007 11:24:45 +0100 [thread overview]
Message-ID: <1173263085.6374.132.camel@twins> (raw)
In-Reply-To: <20070307102106.GB5555@wotan.suse.de>
On Wed, 2007-03-07 at 11:21 +0100, Nick Piggin wrote:
> On Wed, Mar 07, 2007 at 11:13:20AM +0100, Miklos Szeredi wrote:
> > > *sigh* yes was looking at all that code, thats gonna be darn slow
> > > though, but I'll whip up a patch.
> >
> > Well, if it's going to be darn slow, maybe it's better to go with
> > mingo's plan on emulating nonlinear vmas with linear ones. That'll be
>
> There are real users who want these fast, though.
Yeah, why don't we have a tree per nonlinear vma to find these pages?
wli mentions shadow page tables..
> > darn slow as well, but at least it will be much less complicated.
>
> IMO, the best thing to do is just restore msync behaviour, and comment
> the fact that we ignore nonlinears. We need to restore msync behaviour
> to fix races in regular mappings anyway, at least for now.
Seems to be the best quick solution indeed.
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2007-03-07 10:24 UTC|newest]
Thread overview: 99+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-21 4:49 [patch 0/6] fault vs truncate/invalidate race fix Nick Piggin
2007-02-21 4:49 ` [patch 1/6] mm: debug check for the fault vs invalidate race Nick Piggin
2007-02-21 4:49 ` [patch 2/6] mm: simplify filemap_nopage Nick Piggin
2007-02-21 4:50 ` [patch 3/6] mm: fix fault vs invalidate race for linear mappings Nick Piggin
2007-03-07 6:36 ` Andrew Morton
2007-03-07 6:57 ` Nick Piggin
2007-03-07 7:08 ` Andrew Morton
2007-03-07 7:25 ` Nick Piggin
2007-02-21 4:50 ` [patch 4/6] mm: merge populate and nopage into fault (fixes nonlinear) Nick Piggin
2007-03-07 6:51 ` Andrew Morton
2007-03-07 7:08 ` Nick Piggin
2007-03-07 8:19 ` Nick Piggin
2007-03-07 8:27 ` Ingo Molnar
2007-03-07 8:35 ` Andrew Morton
2007-03-07 8:53 ` Ingo Molnar
2007-03-07 9:28 ` Nick Piggin
2007-03-07 9:44 ` Bill Irwin
2007-03-07 9:49 ` Nick Piggin
2007-03-07 10:02 ` Nick Piggin
2007-03-12 23:01 ` Blaisorblade
2007-03-13 1:19 ` Nick Piggin
2007-03-17 12:17 ` Blaisorblade
2007-03-18 2:50 ` Nick Piggin
2007-03-18 13:09 ` Jeff Dike
2007-03-19 12:04 ` Bill Irwin
2007-03-19 20:44 ` Blaisorblade
2007-03-20 6:00 ` Nick Piggin
2007-03-21 19:45 ` Blaisorblade
2007-03-08 12:39 ` Blaisorblade
2007-03-07 9:29 ` Bill Irwin
2007-03-07 9:39 ` Andrew Morton
2007-03-07 10:09 ` Bill Irwin
2007-03-07 8:38 ` Miklos Szeredi
2007-03-07 8:47 ` Andrew Morton
2007-03-07 8:51 ` Miklos Szeredi
2007-03-07 9:07 ` Andrew Morton
2007-03-07 9:18 ` Nick Piggin
2007-03-07 9:26 ` Andrew Morton
2007-03-07 9:28 ` Miklos Szeredi
2007-03-07 9:38 ` Nick Piggin
2007-03-07 9:25 ` Miklos Szeredi
2007-03-07 9:32 ` Peter Zijlstra
2007-03-07 9:45 ` Nick Piggin
2007-03-07 10:04 ` Nick Piggin
2007-03-07 10:06 ` Peter Zijlstra
2007-03-07 10:13 ` Miklos Szeredi
2007-03-07 10:21 ` Nick Piggin
2007-03-07 10:24 ` Peter Zijlstra [this message]
2007-03-07 10:38 ` Nick Piggin
2007-03-07 10:47 ` Peter Zijlstra
2007-03-07 11:00 ` Nick Piggin
2007-03-07 11:48 ` Peter Zijlstra
2007-03-07 12:17 ` Nick Piggin
2007-03-07 12:41 ` Peter Zijlstra
2007-03-07 13:08 ` Nick Piggin
2007-03-07 13:19 ` Peter Zijlstra
2007-03-07 13:36 ` Nick Piggin
2007-03-07 13:52 ` Peter Zijlstra
2007-03-07 13:56 ` Miklos Szeredi
2007-03-07 14:34 ` Peter Zijlstra
2007-03-07 15:01 ` Nick Piggin
2007-03-07 16:58 ` [RFC][PATCH] mm: fix page_mkclean() vs non-linear vmas Peter Zijlstra
2007-03-07 18:00 ` Linus Torvalds
2007-03-07 18:12 ` Peter Zijlstra
2007-03-07 18:24 ` Peter Zijlstra
2007-03-08 11:21 ` Miklos Szeredi
2007-03-08 11:37 ` Peter Zijlstra
2007-03-08 11:48 ` Miklos Szeredi
2007-03-08 12:11 ` Peter Zijlstra
2007-03-08 12:19 ` Nick Piggin
2007-03-08 12:25 ` Miklos Szeredi
2007-03-08 11:58 ` Nick Piggin
2007-03-08 12:09 ` Miklos Szeredi
2007-03-07 15:10 ` [patch 4/6] mm: merge populate and nopage into fault (fixes nonlinear) Jeff Dike
2007-03-07 13:53 ` Miklos Szeredi
2007-03-07 14:50 ` Nick Piggin
2007-03-07 12:22 ` Bill Irwin
2007-03-07 12:36 ` Nick Piggin
2007-03-07 10:30 ` [rfc][patch 7/6] mm: merge page_mkwrite Nick Piggin
2007-03-07 8:59 ` [patch 4/6] mm: merge populate and nopage into fault (fixes nonlinear) Nick Piggin
2007-03-07 9:11 ` Nick Piggin
2007-03-07 9:22 ` Ingo Molnar
2007-03-07 9:32 ` Bill Irwin
2007-03-07 9:35 ` Ingo Molnar
2007-03-07 9:50 ` Bill Irwin
2007-03-07 9:52 ` Nick Piggin
2007-03-07 7:19 ` Bill Irwin
2007-03-07 10:05 ` Benjamin Herrenschmidt
2007-03-07 10:17 ` Nick Piggin
2007-03-07 10:46 ` Benjamin Herrenschmidt
2007-02-21 4:50 ` [patch 5/6] mm: merge nopfn into fault Nick Piggin
2007-02-21 5:13 ` Nick Piggin
2007-02-21 4:50 ` [patch 6/6] mm: remove legacy cruft Nick Piggin
2007-02-27 4:36 ` [patch 0/6] fault vs truncate/invalidate race fix Dave Airlie
2007-02-27 5:32 ` Andrew Morton
2007-02-27 6:26 ` Dave Airlie
2007-02-27 6:54 ` Benjamin Herrenschmidt
2007-03-18 23:13 ` Dave Airlie
2007-02-27 8:50 ` Nick Piggin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1173263085.6374.132.camel@twins \
--to=a.p.zijlstra@chello.nl \
--cc=akpm@linux-foundation.org \
--cc=benh@kernel.crashing.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=miklos@szeredi.hu \
--cc=mingo@elte.hu \
--cc=npiggin@suse.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).