From: Andi Kleen <ak@suse.de>
To: Christoph Lameter <clameter@sgi.com>
Cc: Andrew Morton <akpm@osdl.org>, Mel Gorman <mel@csn.ul.ie>,
Andy Whitcroft <apw@shadowen.org>,
Nick Piggin <nickpiggin@yahoo.com.au>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Linux Memory Management List <linux-mm@kvack.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: Page allocator: Single Zone optimizations
Date: Mon, 6 Nov 2006 18:20:01 +0100 [thread overview]
Message-ID: <200611061820.01943.ak@suse.de> (raw)
In-Reply-To: <Pine.LNX.4.64.0611060912070.25496@schroedinger.engr.sgi.com>
> No its not. RCU means that there are potential accesses after a object has
> been freed and even after an object has been reallocated via
> kmem_cache_alloc. A function that runs after kmem_cache_alloc() may
> mess up the lock state.
Ok, got it. How messy.
>From my previous slab experiences I predict it will not work anymore in less than
half a year. Such fragile constructions never tend to hold long.
> > What I meant: some time ago i had patches to add a __GFP_ZERO queue to the
> > page allocator. The page allocator would handle all this for everybody.
> > For various reasons they never got pushed.
>
> Yup that was probably my patchset.
That was an own patch by me. But it was pretty obvious so I'm sure
others had the same idea.
-Andi
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next prev parent reply other threads:[~2006-11-06 17:20 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-17 0:50 Christoph Lameter
2006-10-17 1:10 ` Andrew Morton
2006-10-17 1:13 ` Christoph Lameter
2006-10-17 1:27 ` KAMEZAWA Hiroyuki
2006-10-17 1:25 ` Christoph Lameter
2006-10-17 6:04 ` Nick Piggin
2006-10-17 17:54 ` Christoph Lameter
2006-10-18 11:15 ` Nick Piggin
2006-10-18 19:38 ` Andrew Morton
2006-10-23 23:08 ` Christoph Lameter
2006-10-24 1:07 ` Christoph Lameter
2006-10-26 22:09 ` Andrew Morton
2006-10-26 22:28 ` Christoph Lameter
2006-10-28 1:00 ` Christoph Lameter
2006-10-28 2:04 ` Andrew Morton
2006-10-28 2:12 ` Christoph Lameter
2006-10-28 2:24 ` Andrew Morton
2006-10-28 2:31 ` Christoph Lameter
2006-10-28 4:43 ` Andrew Morton
2006-10-28 7:47 ` KAMEZAWA Hiroyuki
2006-10-28 16:12 ` Andi Kleen
2006-10-29 0:48 ` Christoph Lameter
2006-10-29 1:04 ` Andrew Morton
2006-10-29 1:29 ` Christoph Lameter
2006-10-29 11:32 ` Nick Piggin
2006-10-30 16:41 ` Christoph Lameter
2006-11-01 18:26 ` Mel Gorman
2006-11-01 20:34 ` Andrew Morton
2006-11-01 21:00 ` Christoph Lameter
2006-11-01 21:46 ` Andrew Morton
2006-11-01 21:50 ` Christoph Lameter
2006-11-01 22:13 ` Mel Gorman
2006-11-01 23:29 ` Christoph Lameter
2006-11-02 0:22 ` Andrew Morton
2006-11-02 0:27 ` Christoph Lameter
2006-11-02 12:45 ` Mel Gorman
2006-11-01 22:10 ` Mel Gorman
2006-11-02 17:37 ` Andy Whitcroft
2006-11-02 18:08 ` Christoph Lameter
2006-11-02 20:58 ` Mel Gorman
2006-11-02 21:04 ` Christoph Lameter
2006-11-02 21:16 ` Mel Gorman
2006-11-02 21:52 ` Christoph Lameter
2006-11-02 22:37 ` Mel Gorman
2006-11-02 22:50 ` Christoph Lameter
2006-11-03 9:14 ` Mel Gorman
2006-11-03 13:17 ` Andy Whitcroft
2006-11-03 18:11 ` Christoph Lameter
2006-11-03 19:06 ` Mel Gorman
2006-11-03 19:44 ` Christoph Lameter
2006-11-03 21:11 ` Mel Gorman
2006-11-03 21:42 ` Christoph Lameter
2006-11-03 21:50 ` Andrew Morton
2006-11-03 21:53 ` Christoph Lameter
2006-11-03 22:12 ` Andrew Morton
2006-11-03 22:15 ` Christoph Lameter
2006-11-03 22:19 ` Andi Kleen
2006-11-04 0:37 ` Christoph Lameter
2006-11-04 1:32 ` Andi Kleen
2006-11-06 16:40 ` Christoph Lameter
2006-11-06 16:56 ` Andi Kleen
2006-11-06 17:00 ` Christoph Lameter
2006-11-06 17:07 ` Andi Kleen
2006-11-06 17:12 ` Hugh Dickins
2006-11-06 17:15 ` Christoph Lameter
2006-11-06 17:20 ` Andi Kleen [this message]
2006-11-06 17:26 ` Christoph Lameter
2006-11-07 16:30 ` Mel Gorman
2006-11-07 17:54 ` Christoph Lameter
2006-11-07 18:14 ` Mel Gorman
2006-11-08 0:29 ` KAMEZAWA Hiroyuki
2006-11-08 2:08 ` Christoph Lameter
2006-11-13 21:08 ` Mel Gorman
2006-11-03 12:48 ` Peter Zijlstra
2006-11-03 18:15 ` Christoph Lameter
2006-11-03 18:53 ` Peter Zijlstra
2006-11-03 19:23 ` Christoph Lameter
2006-11-02 18:52 ` Andrew Morton
2006-11-02 21:51 ` Mel Gorman
2006-11-02 22:03 ` Andy Whitcroft
2006-11-02 22:11 ` Andrew Morton
2006-11-01 18:13 ` Mel Gorman
2006-11-01 17:39 ` Mel Gorman
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