Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753551AbaGKHnR (ORCPT ); Fri, 11 Jul 2014 03:43:17 -0400 Received: from mga09.intel.com ([134.134.136.24]:37029 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752090AbaGKHgr (ORCPT ); Fri, 11 Jul 2014 03:36:47 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.01,642,1400050800"; d="scan'208";a="571589814" From: Jiang Liu To: Andrew Morton , Mel Gorman , David Rientjes , Mike Galbraith , Peter Zijlstra , "Rafael J . Wysocki" , Robert Love , "James E.J. Bottomley" Cc: Jiang Liu , Tony Luck , linux-mm@kvack.org, linux-hotplug@vger.kernel.org, linux-kernel@vger.kernel.org, fcoe-devel@open-fcoe.org, linux-scsi@vger.kernel.org Subject: [RFC Patch V1 20/30] mm, fcoe: Use cpu_to_mem()/numa_mem_id() to support memoryless node Date: Fri, 11 Jul 2014 15:37:37 +0800 Message-Id: <1405064267-11678-21-git-send-email-jiang.liu@linux.intel.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1405064267-11678-1-git-send-email-jiang.liu@linux.intel.com> References: <1405064267-11678-1-git-send-email-jiang.liu@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@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 --- drivers/scsi/fcoe/fcoe.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c index 00ee0ed642aa..779a7af0e410 100644 --- a/drivers/scsi/fcoe/fcoe.c +++ b/drivers/scsi/fcoe/fcoe.c @@ -1257,7 +1257,7 @@ static void fcoe_percpu_thread_create(unsigned int cpu) p = &per_cpu(fcoe_percpu, cpu); thread = kthread_create_on_node(fcoe_percpu_receive_thread, - (void *)p, cpu_to_node(cpu), + (void *)p, cpu_to_mem(cpu), "fcoethread/%d", cpu); if (likely(!IS_ERR(thread))) { -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/