From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from qmta10.emeryville.ca.mail.comcast.net (qmta10.emeryville.ca.mail.comcast.net [76.96.30.17]) by ozlabs.org (Postfix) with ESMTP id E26EA2C00CF for ; Fri, 7 Feb 2014 04:26:20 +1100 (EST) Date: Thu, 6 Feb 2014 11:26:15 -0600 (CST) From: Christoph Lameter To: Joonsoo Kim Subject: Re: [RFC PATCH 1/3] slub: search partial list on numa_mem_id(), instead of numa_node_id() In-Reply-To: <1391674026-20092-1-git-send-email-iamjoonsoo.kim@lge.com> Message-ID: References: <20140206020757.GC5433@linux.vnet.ibm.com> <1391674026-20092-1-git-send-email-iamjoonsoo.kim@lge.com> Content-Type: TEXT/PLAIN; charset=US-ASCII Cc: Han Pingtian , Nishanth Aravamudan , mpm@selenic.com, penberg@kernel.org, linux-mm@kvack.org, paulus@samba.org, Anton Blanchard , David Rientjes , linuxppc-dev@lists.ozlabs.org, Wanpeng Li List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Thu, 6 Feb 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: Christoph Lameter