From: James Bottomley <James.Bottomley@HansenPartnership.com>
To: Glauber Costa <glommer@parallels.com>
Cc: David Rientjes <rientjes@google.com>,
Christoph Lameter <cl@linux.com>,
linux-kernel@vger.kernel.org, cgroups@vger.kernel.org,
linux-mm@kvack.org, Pekka Enberg <penberg@cs.helsinki.fi>
Subject: Re: [PATCH] slab+slob: dup name string
Date: Wed, 23 May 2012 13:24:38 +0100 [thread overview]
Message-ID: <1337775878.3013.16.camel@dabdike.int.hansenpartnership.com> (raw)
In-Reply-To: <4FBCD328.6060406@parallels.com>
On Wed, 2012-05-23 at 16:08 +0400, Glauber Costa wrote:
> On 05/23/2012 03:46 PM, James Bottomley wrote:
> >> We can't predict how slab will be extended in the future and this affects
> >> > anything created before g_cpucache_cpu<= EARLY. This would introduce the
> >> > first problem with destroying such caches and is unnecessary if a
> >> > workaround exists.
> > These problems seem to indicate that the slab behaviour: expecting the
> > string to exist for the lifetime of the cache so there's no need to copy
> > it might be better.
> >
> > This must be the behaviour all users of kmem_cache_create() expect
> > anyway, since all enterprise distributions use slab and they're not
> > getting bugs reported in this area.
> >
> > So, why not simply patch slab to rely on the string lifetime being the
> > cache lifetime (or beyond) and therefore not having it take a copy?
> >
> You mean patch slub? slub is the one that takes a copy currently.
Yes ... a one letter typo.
James
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next prev parent reply other threads:[~2012-05-23 12:24 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-21 15:18 Glauber Costa
2012-05-21 15:35 ` Christoph Lameter
2012-05-22 3:22 ` David Rientjes
2012-05-22 7:23 ` Glauber Costa
2012-05-22 9:45 ` Glauber Costa
2012-05-22 13:56 ` Christoph Lameter
2012-05-22 15:19 ` Glauber Costa
2012-05-22 17:16 ` Christoph Lameter
2012-05-22 22:31 ` David Rientjes
2012-05-23 11:46 ` James Bottomley
2012-05-23 12:08 ` Glauber Costa
2012-05-23 12:24 ` James Bottomley [this message]
2012-05-23 14:48 ` Christoph Lameter
2012-05-23 14:50 ` Glauber Costa
2012-05-24 0:18 ` Dave Chinner
2012-05-24 12:06 ` Glauber Costa
2012-05-23 15:01 ` Glauber Costa
2012-05-23 15:17 ` Christoph Lameter
2012-05-23 15:15 ` Glauber Costa
2012-05-23 13:48 ` Christoph Lameter
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