From: Rik van Riel <riel@redhat.com>
To: Ulrich Drepper <drepper@redhat.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>,
Jakub Jelinek <jakub@redhat.com>
Subject: Re: [PATCH] MM: implement MADV_FREE lazy freeing of anonymous memory
Date: Mon, 07 May 2007 00:56:09 -0400 [thread overview]
Message-ID: <463EB169.8030701@redhat.com> (raw)
In-Reply-To: <463E921D.3070407@redhat.com>
Ulrich Drepper wrote:
> Rik van Riel wrote:
>> I think that maybe for 2.6.22 we should just alias MADV_FREE
>> to run with the MADV_DONTNEED functionality, so that the glibc
>> people can make the change on their side while we figure out
>> what will be the best thing to do on the kernel side.
>
> No need for that. We can later extend glibc to use MADV_FREE and fall
> back on MADV_DONTNEED.
It's trivial to merge the MADV_FREE #defines into the kernel
though, and aliasing MADV_FREE to MADV_DONTNEED for the time
being is a one-liner - just an extra constant into the big
switch statement in sys_madvise().
WARNING: multiple messages have this Message-ID (diff)
From: Rik van Riel <riel@redhat.com>
To: Ulrich Drepper <drepper@redhat.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>,
Jakub Jelinek <jakub@redhat.com>
Subject: Re: [PATCH] MM: implement MADV_FREE lazy freeing of anonymous memory
Date: Mon, 07 May 2007 00:56:09 -0400 [thread overview]
Message-ID: <463EB169.8030701@redhat.com> (raw)
In-Reply-To: <463E921D.3070407@redhat.com>
Ulrich Drepper wrote:
> Rik van Riel wrote:
>> I think that maybe for 2.6.22 we should just alias MADV_FREE
>> to run with the MADV_DONTNEED functionality, so that the glibc
>> people can make the change on their side while we figure out
>> what will be the best thing to do on the kernel side.
>
> No need for that. We can later extend glibc to use MADV_FREE and fall
> back on MADV_DONTNEED.
It's trivial to merge the MADV_FREE #defines into the kernel
though, and aliasing MADV_FREE to MADV_DONTNEED for the time
being is a one-liner - just an extra constant into the big
switch statement in sys_madvise().
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next prev parent reply other threads:[~2007-05-07 4:46 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-28 4:43 [PATCH] MM: implement MADV_FREE lazy freeing of anonymous memory Rik van Riel
2007-05-04 10:53 ` Nick Piggin
2007-05-04 10:53 ` Nick Piggin
2007-05-04 11:58 ` Rik van Riel
2007-05-04 11:58 ` Rik van Riel
2007-05-04 23:49 ` Nick Piggin
2007-05-04 23:49 ` Nick Piggin
2007-05-04 16:04 ` Ulrich Drepper
2007-05-04 23:47 ` Nick Piggin
2007-05-04 23:47 ` Nick Piggin
2007-05-05 0:10 ` Ulrich Drepper
2007-05-06 22:43 ` Rik van Riel
2007-05-06 22:43 ` Rik van Riel
2007-05-07 2:42 ` Ulrich Drepper
2007-05-07 2:42 ` Ulrich Drepper
2007-05-07 4:56 ` Rik van Riel [this message]
2007-05-07 4:56 ` Rik van Riel
2007-05-07 4:53 ` Ulrich Drepper
2007-05-07 4:53 ` Ulrich Drepper
2007-05-07 16:51 ` Rik van Riel
2007-05-07 16:51 ` Rik van Riel
2007-05-08 6:12 ` Nick Piggin
2007-05-08 6:12 ` Nick Piggin
2007-05-08 14:59 ` Rik van Riel
2007-05-08 14:59 ` Rik van Riel
2007-05-08 23:23 ` Nick Piggin
2007-05-08 23:23 ` Nick Piggin
2007-05-08 18:35 ` Jakub Jelinek
2007-05-08 18:35 ` Jakub Jelinek
2007-05-08 23:43 ` Nick Piggin
2007-05-08 23:43 ` Nick Piggin
2007-05-08 3:51 ` [PATCH] stub MADV_FREE implementation Rik van Riel
2007-05-08 23:05 ` Andrew Morton
2007-05-08 23:05 ` Andrew Morton
2007-05-09 17:15 ` Ulrich Drepper
2007-05-09 17:15 ` Ulrich Drepper
2007-05-09 16:38 ` [PATCH] MM: implement MADV_FREE lazy freeing of anonymous memory Hugh Dickins
2007-05-09 16:38 ` Hugh Dickins
2007-05-29 16:59 ` Rik van Riel
2007-05-29 16:59 ` Rik van Riel
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