linux-kernel - Re: [RESEND PATCH] slub: search partial list on numa_mem_id(), instead of numa_node

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <alpine.DEB.2.02.1406041712350.23521@chino.kir.corp.google.com>
Date:	Wed, 4 Jun 2014 17:13:44 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Nishanth Aravamudan <nacc@...ux.vnet.ibm.com>,
	Pekka Enberg <penberg@...nel.org>,
	Christoph Lameter <cl@...ux.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, Joonsoo Kim <js1304@...il.com>,
	Han Pingtian <hanpt@...ux.vnet.ibm.com>, paulus@...ba.org,
	Anton Blanchard <anton@...ba.org>, mpm@...enic.com,
	linuxppc-dev@...ts.ozlabs.org,
	Wanpeng Li <liwanp@...ux.vnet.ibm.com>
Subject: Re: [RESEND PATCH] slub: search partial list on numa_mem_id(),
 instead of numa_node_id()

On Wed, 21 May 2014, Joonsoo Kim wrote:

> Currently, if allocation constraint to node is NUMA_NO_NODE, we search
> a partial slab on numa_node_id() node. This doesn't work properly on the
> system having memoryless node, since it can have no memory on that node and
> there must be no partial slab on that node.
> 
> On that node, page allocation always fallback to numa_mem_id() first. So
> searching a partial slab on numa_node_id() in that case is proper solution
> for memoryless node case.
> 
> Acked-by: Nishanth Aravamudan <nacc@...ux.vnet.ibm.com>
> Acked-by: David Rientjes <rientjes@...gle.com>
> Acked-by: Christoph Lameter <cl@...ux.com>
> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@....com>
> 
> diff --git a/mm/slub.c b/mm/slub.c
> index 545a170..cc1f995 100644
> --- a/mm/slub.c
> +++ b/mm/slub.c
> @@ -1698,7 +1698,7 @@ static void *get_partial(struct kmem_cache *s, gfp_t flags, int node,
>  		struct kmem_cache_cpu *c)
>  {
>  	void *object;
> -	int searchnode = (node == NUMA_NO_NODE) ? numa_node_id() : node;
> +	int searchnode = (node == NUMA_NO_NODE) ? numa_mem_id() : node;
>  
>  	object = get_partial_node(s, get_node(s, searchnode), c, flags);
>  	if (object || node != NUMA_NO_NODE)

Andrew, can you merge this please?  It's still not in linux-next.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/