From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jiang Liu Date: Fri, 11 Jul 2014 07:37:27 +0000 Subject: [RFC Patch V1 10/30] mm, xfrm: Use cpu_to_mem()/numa_mem_id() to support memoryless node Message-Id: <1405064267-11678-11-git-send-email-jiang.liu@linux.intel.com> List-Id: References: <1405064267-11678-1-git-send-email-jiang.liu@linux.intel.com> In-Reply-To: <1405064267-11678-1-git-send-email-jiang.liu@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Andrew Morton , Mel Gorman , David Rientjes , Mike Galbraith , Peter Zijlstra , "Rafael J . Wysocki" , Steffen Klassert , Herbert Xu , "David S. Miller" Cc: Jiang Liu , Tony Luck , linux-mm@kvack.org, linux-hotplug@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org When CONFIG_HAVE_MEMORYLESS_NODES is enabled, cpu_to_node()/numa_node_id() may return a node without memory, and later cause system failure/panic when calling kmalloc_node() and friends with returned node id. So use cpu_to_mem()/numa_mem_id() instead to get the nearest node with memory for the/current cpu. If CONFIG_HAVE_MEMORYLESS_NODES is disabled, cpu_to_mem()/numa_mem_id() is the same as cpu_to_node()/numa_node_id(). Signed-off-by: Jiang Liu --- net/xfrm/xfrm_ipcomp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/xfrm/xfrm_ipcomp.c b/net/xfrm/xfrm_ipcomp.c index ccfdc7115a83..129f469ae75d 100644 --- a/net/xfrm/xfrm_ipcomp.c +++ b/net/xfrm/xfrm_ipcomp.c @@ -235,7 +235,7 @@ static void * __percpu *ipcomp_alloc_scratches(void) for_each_possible_cpu(i) { void *scratch; - scratch = vmalloc_node(IPCOMP_SCRATCH_SIZE, cpu_to_node(i)); + scratch = vmalloc_node(IPCOMP_SCRATCH_SIZE, cpu_to_mem(i)); if (!scratch) return NULL; *per_cpu_ptr(scratches, i) = scratch; -- 1.7.10.4