From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CD712C49361 for ; Fri, 18 Jun 2021 03:45:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B1E11613D5 for ; Fri, 18 Jun 2021 03:45:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231319AbhFRDrL (ORCPT ); Thu, 17 Jun 2021 23:47:11 -0400 Received: from mga06.intel.com ([134.134.136.31]:1056 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231474AbhFRDrK (ORCPT ); Thu, 17 Jun 2021 23:47:10 -0400 IronPort-SDR: u1sYw/vUODM0lHwXpK0Wh0CXq+4CmSgYW0r1kjLrKd9/B8BSc9343mLTqpsdQ+QZl0uibZs6bx lCsas/Wzoh2g== X-IronPort-AV: E=McAfee;i="6200,9189,10018"; a="267636033" X-IronPort-AV: E=Sophos;i="5.83,281,1616482800"; d="scan'208";a="267636033" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Jun 2021 20:45:02 -0700 IronPort-SDR: APnfItg5ysWfcPVObQ0YruQPbopM7gCClGv2wkJQNQG0c8GwLD2o2wzOrRx+6Br9IzmfgHOfsl 7csPe3W1MI7g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.83,281,1616482800"; d="scan'208";a="485539846" Received: from shbuild999.sh.intel.com ([10.239.147.94]) by orsmga001.jf.intel.com with ESMTP; 17 Jun 2021 20:44:57 -0700 From: Feng Tang To: linux-mm@kvack.org, Andrew Morton , Michal Hocko , David Rientjes , Dave Hansen , Ben Widawsky Cc: linux-kernel@vger.kernel.org, linux-api@vger.kernel.org, Andrea Arcangeli , Mel Gorman , Mike Kravetz , Randy Dunlap , Vlastimil Babka , Andi Kleen , Dan Williams , ying.huang@intel.com, Feng Tang Subject: [PATCH v5 -mm 3/6] mm/mempolicy: enable page allocation for MPOL_PREFERRED_MANY for general cases Date: Fri, 18 Jun 2021 11:44:41 +0800 Message-Id: <1623987884-43576-4-git-send-email-feng.tang@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1623987884-43576-1-git-send-email-feng.tang@intel.com> References: <1623987884-43576-1-git-send-email-feng.tang@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-api@vger.kernel.org From: Ben Widawsky In order to support MPOL_PREFERRED_MANY which is used by set_mempolicy(2), mbind(2), enable both alloc_pages() and alloc_pages_vma() by using alloc_page_preferred_many(). Signed-off-by: Ben Widawsky Signed-off-by: Feng Tang --- mm/mempolicy.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/mm/mempolicy.c b/mm/mempolicy.c index d17bf018efcc..9dce67fc9bb6 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -2207,6 +2207,12 @@ struct page *alloc_pages_vma(gfp_t gfp, int order, struct vm_area_struct *vma, goto out; } + if (pol->mode == MPOL_PREFERRED_MANY) { + page = alloc_page_preferred_many(gfp, order, pol); + mpol_cond_put(pol); + goto out; + } + if (unlikely(IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE) && hugepage)) { int hpage_node = node; @@ -2286,6 +2292,8 @@ struct page *alloc_pages(gfp_t gfp, unsigned order) */ if (pol->mode == MPOL_INTERLEAVE) page = alloc_page_interleave(gfp, order, interleave_nodes(pol)); + else if (pol->mode == MPOL_PREFERRED_MANY) + page = alloc_page_preferred_many(gfp, order, pol); else page = __alloc_pages(gfp, order, policy_node(gfp, pol, numa_node_id()), -- 2.7.4