From: Glauber Costa <glommer@parallels.com>
To: James Bottomley <James.Bottomley@HansenPartnership.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 16:08:08 +0400 [thread overview]
Message-ID: <4FBCD328.6060406@parallels.com> (raw)
In-Reply-To: <1337773595.3013.15.camel@dabdike.int.hansenpartnership.com>
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.
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next prev parent reply other threads:[~2012-05-23 12:10 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 [this message]
2012-05-23 12:24 ` James Bottomley
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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