From: Joonsoo Kim <iamjoonsoo.kim@lge.com>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Christoph Lameter <cl@linux.com>,
Pekka Enberg <penberg@kernel.org>,
David Rientjes <rientjes@google.com>,
Jesper Dangaard Brouer <brouer@redhat.com>,
Linux MM <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 02/11] mm/slab: remove BAD_ALIEN_MAGIC again
Date: Wed, 30 Mar 2016 17:11:35 +0900 [thread overview]
Message-ID: <20160330081135.GB1678@js1304-P5Q-DELUXE> (raw)
In-Reply-To: <CAMuHMdU7WzkTccN_wa_LB+qx=1f_4V0SSRF+XqNdgYvCb2o5Ng@mail.gmail.com>
On Mon, Mar 28, 2016 at 10:58:38AM +0200, Geert Uytterhoeven wrote:
> Hi Jonsoo,
>
> On Mon, Mar 28, 2016 at 7:26 AM, <js1304@gmail.com> wrote:
> > From: Joonsoo Kim <iamjoonsoo.kim@lge.com>
> >
> > Initial attemp to remove BAD_ALIEN_MAGIC is once reverted by
> > 'commit edcad2509550 ("Revert "slab: remove BAD_ALIEN_MAGIC"")'
> > because it causes a problem on m68k which has many node
> > but !CONFIG_NUMA. In this case, although alien cache isn't used
> > at all but to cope with some initialization path, garbage value
> > is used and that is BAD_ALIEN_MAGIC. Now, this patch set
> > use_alien_caches to 0 when !CONFIG_NUMA, there is no initialization
> > path problem so we don't need BAD_ALIEN_MAGIC at all. So remove it.
> >
> > Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
>
> I gave this a try on m68k/ARAnyM, and it didn't crash, unlike the previous
> version that was reverted, so
> Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Thanks for testing!!!
Thanks.
next prev parent reply other threads:[~2016-03-30 8:09 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-28 5:26 mm/slab: reduce lock contention in alloc path js1304
2016-03-28 5:26 ` [PATCH 01/11] mm/slab: hold a slab_mutex when calling __kmem_cache_shrink() js1304
2016-03-29 0:50 ` Christoph Lameter
2016-03-30 8:11 ` Joonsoo Kim
2016-03-31 10:53 ` Nikolay Borisov
2016-04-01 2:18 ` Joonsoo Kim
2016-03-28 5:26 ` [PATCH 02/11] mm/slab: remove BAD_ALIEN_MAGIC again js1304
2016-03-28 8:58 ` Geert Uytterhoeven
2016-03-30 8:11 ` Joonsoo Kim [this message]
2016-03-28 21:19 ` Andrew Morton
2016-03-29 0:53 ` Christoph Lameter
2016-03-28 5:26 ` [PATCH 03/11] mm/slab: drain the free slab as much as possible js1304
2016-03-29 0:54 ` Christoph Lameter
2016-03-28 5:26 ` [PATCH 04/11] mm/slab: factor out kmem_cache_node initialization code js1304
2016-03-29 0:56 ` Christoph Lameter
2016-03-30 8:12 ` Joonsoo Kim
2016-03-28 5:26 ` [PATCH 05/11] mm/slab: clean-up kmem_cache_node setup js1304
2016-03-29 0:58 ` Christoph Lameter
2016-03-30 8:15 ` Joonsoo Kim
2016-03-28 5:26 ` [PATCH 06/11] mm/slab: don't keep free slabs if free_objects exceeds free_limit js1304
2016-03-29 1:03 ` Christoph Lameter
2016-03-30 8:25 ` Joonsoo Kim
2016-03-28 5:26 ` [PATCH 07/11] mm/slab: racy access/modify the slab color js1304
2016-03-29 1:05 ` Christoph Lameter
2016-03-30 8:25 ` Joonsoo Kim
2016-03-28 5:26 ` [PATCH 08/11] mm/slab: make cache_grow() handle the page allocated on arbitrary node js1304
2016-03-28 5:26 ` [PATCH 09/11] mm/slab: separate cache_grow() to two parts js1304
2016-03-28 5:27 ` [PATCH 10/11] mm/slab: refill cpu cache through a new slab without holding a node lock js1304
2016-03-28 5:27 ` [PATCH 11/11] mm/slab: lockless decision to grow cache js1304
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