From: Pekka Enberg <penberg@iki.fi>
To: Christoph Lameter <cl@linux.com>,
Vladimir Davydov <vdavydov@parallels.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Michal Hocko <mhocko@suse.cz>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH -mm v2 1/3] slub: never fail to shrink cache
Date: Wed, 28 Jan 2015 20:29:22 +0200 [thread overview]
Message-ID: <54C92A82.10805@iki.fi> (raw)
In-Reply-To: <alpine.DEB.2.11.1501281031190.32147@gentwo.org>
On 1/28/15 6:31 PM, Christoph Lameter wrote:
> On Wed, 28 Jan 2015, Vladimir Davydov wrote:
>
>> This patch therefore makes __kmem_cache_shrink() allocate the array on
>> stack instead of calling kmalloc, which may fail. The array size is
>> chosen to be equal to 32, because most SLUB caches store not more than
>> 32 objects per slab page. Slab pages with <= 32 free objects are sorted
>> using the array by the number of objects in use and promoted to the head
>> of the partial list, while slab pages with > 32 free objects are left in
>> the end of the list without any ordering imposed on them.
> Acked-by: Christoph Lameter <cl@linux.com>
Acked-by: Pekka Enberg <penberg@kernel.org>
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next prev parent reply other threads:[~2015-01-28 18:29 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-28 16:22 [PATCH -mm v2 0/3] slub: make dead caches discard free slabs immediately Vladimir Davydov
2015-01-28 16:22 ` [PATCH -mm v2 1/3] slub: never fail to shrink cache Vladimir Davydov
2015-01-28 16:31 ` Christoph Lameter
2015-01-28 18:29 ` Pekka Enberg [this message]
2015-01-28 16:37 ` Christoph Lameter
2015-01-28 17:32 ` Vladimir Davydov
2015-01-28 19:20 ` Christoph Lameter
2015-01-28 21:57 ` Andrew Morton
2015-01-28 22:56 ` Christoph Lameter
2015-01-29 8:07 ` Vladimir Davydov
2015-01-29 15:55 ` Christoph Lameter
2015-01-29 16:17 ` Vladimir Davydov
2015-01-29 16:22 ` Christoph Lameter
2015-01-29 18:21 ` Vladimir Davydov
2015-01-29 19:10 ` Christoph Lameter
2015-01-29 8:32 ` Balbir Singh
2015-02-15 3:55 ` Sasha Levin
2015-02-15 9:47 ` Vladimir Davydov
2015-01-28 16:22 ` [PATCH -mm v2 2/3] slub: fix kmem_cache_shrink return value Vladimir Davydov
2015-01-28 16:33 ` Christoph Lameter
2015-01-28 17:46 ` Vladimir Davydov
2015-01-28 19:19 ` Christoph Lameter
2015-01-28 16:22 ` [PATCH -mm v2 3/3] slub: make dead caches discard free slabs immediately Vladimir Davydov
2016-04-01 9:04 ` Peter Zijlstra
2016-04-01 10:55 ` Vladimir Davydov
2016-04-01 11:41 ` Peter Zijlstra
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