From: Andrew Morton <akpm@linux-foundation.org>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: hugh@veritas.com, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, npiggin@suse.de, riel@redhat.com,
mztabzr@0pointer.de, mpm@selenic.com
Subject: Re: [PATCH] mm: MADV_WILLNEED implementation for anonymous memory
Date: Thu, 31 Jan 2008 01:47:02 -0800 [thread overview]
Message-ID: <20080131014702.705f1040.akpm@linux-foundation.org> (raw)
In-Reply-To: <1201772118.28547.254.camel@lappy>
On Thu, 31 Jan 2008 10:35:18 +0100 Peter Zijlstra <a.p.zijlstra@chello.nl> wrote:
>
> On Thu, 2008-01-31 at 01:12 -0800, Andrew Morton wrote:
>
> > Implementation-wise: make_pages_present() _can_ be converted to do this.
> > But it's a lot of patching, and the result will be a cleaner, faster and
> > smaller core MM. Whereas your approach is easy, but adds more code and
> > leaves the old stuff slow-and-dirty.
> >
> > Guess which approach is preferred? ;)
>
> Ok, I'll look at using make_pages_present().
Am still curious to know what inspired this change. What are the use
cases? Performance testing results, etc?
WARNING: multiple messages have this Message-ID (diff)
From: Andrew Morton <akpm@linux-foundation.org>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: hugh@veritas.com, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, npiggin@suse.de, riel@redhat.com,
mztabzr@0pointer.de, mpm@selenic.com
Subject: Re: [PATCH] mm: MADV_WILLNEED implementation for anonymous memory
Date: Thu, 31 Jan 2008 01:47:02 -0800 [thread overview]
Message-ID: <20080131014702.705f1040.akpm@linux-foundation.org> (raw)
In-Reply-To: <1201772118.28547.254.camel@lappy>
On Thu, 31 Jan 2008 10:35:18 +0100 Peter Zijlstra <a.p.zijlstra@chello.nl> wrote:
>
> On Thu, 2008-01-31 at 01:12 -0800, Andrew Morton wrote:
>
> > Implementation-wise: make_pages_present() _can_ be converted to do this.
> > But it's a lot of patching, and the result will be a cleaner, faster and
> > smaller core MM. Whereas your approach is easy, but adds more code and
> > leaves the old stuff slow-and-dirty.
> >
> > Guess which approach is preferred? ;)
>
> Ok, I'll look at using make_pages_present().
Am still curious to know what inspired this change. What are the use
cases? Performance testing results, etc?
--
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next prev parent reply other threads:[~2008-01-31 9:48 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-30 17:28 [PATCH] mm: MADV_WILLNEED implementation for anonymous memory Peter Zijlstra
2008-01-30 17:28 ` [PATCH] mm: MADV_WILLNEED implementation for anonymous memory, " Peter Zijlstra
2008-01-30 18:15 ` [PATCH] " Matt Mackall
2008-01-30 18:15 ` Matt Mackall
2008-01-30 22:40 ` Andrew Morton
2008-01-30 22:40 ` Andrew Morton
2008-01-31 8:44 ` Peter Zijlstra
2008-01-31 8:44 ` Peter Zijlstra
2008-01-31 9:12 ` Andrew Morton
2008-01-31 9:12 ` Andrew Morton
2008-01-31 9:35 ` Peter Zijlstra
2008-01-31 9:35 ` Peter Zijlstra
2008-01-31 9:47 ` Andrew Morton [this message]
2008-01-31 9:47 ` Andrew Morton
2008-01-31 9:53 ` Peter Zijlstra
2008-01-31 9:53 ` Peter Zijlstra
2008-01-31 10:05 ` Andrew Morton
2008-01-31 10:05 ` Andrew Morton
2008-01-31 10:10 ` Peter Zijlstra
2008-01-31 10:10 ` Peter Zijlstra
2008-01-31 10:18 ` Andrew Morton
2008-01-31 10:18 ` Andrew Morton
2008-01-31 10:15 ` Andi Kleen
2008-01-31 10:15 ` Andi Kleen
2008-01-31 10:19 ` Andrew Morton
2008-01-31 10:19 ` Andrew Morton
2008-01-31 11:06 ` Andi Kleen
2008-01-31 11:06 ` Andi Kleen
2008-01-31 10:52 ` Rik van Riel
2008-01-31 10:52 ` Rik van Riel
2008-01-31 11:32 ` Andi Kleen
2008-01-31 11:32 ` Andi Kleen
2008-01-31 11:09 ` Rik van Riel
2008-01-31 11:09 ` Rik van Riel
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