From nobody Fri Apr 3 03:50:14 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C067CC54EE9 for ; Fri, 16 Sep 2022 11:06:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230451AbiIPLGg (ORCPT ); Fri, 16 Sep 2022 07:06:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45924 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232210AbiIPLGC (ORCPT ); Fri, 16 Sep 2022 07:06:02 -0400 Received: from SHSQR01.spreadtrum.com (unknown [222.66.158.135]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 36F933FA26 for ; Fri, 16 Sep 2022 03:59:10 -0700 (PDT) Received: from SHSend.spreadtrum.com (bjmbx01.spreadtrum.com [10.0.64.7]) by SHSQR01.spreadtrum.com with ESMTPS id 28GAwVml097851 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NO); Fri, 16 Sep 2022 18:58:31 +0800 (CST) (envelope-from zhaoyang.huang@unisoc.com) Received: from bj03382pcu.spreadtrum.com (10.0.74.65) by BJMBX01.spreadtrum.com (10.0.64.7) with Microsoft SMTP Server (TLS) id 15.0.1497.23; Fri, 16 Sep 2022 18:58:31 +0800 From: "zhaoyang.huang" To: Mel Gorman , Andrew Morton , Zhaoyang Huang , , , Subject: [RFC PATCH] mm: check global free_list if there is ongoing reclaiming when pcp fail Date: Fri, 16 Sep 2022 18:58:12 +0800 Message-ID: <1663325892-9825-1-git-send-email-zhaoyang.huang@unisoc.com> X-Mailer: git-send-email 1.9.1 MIME-Version: 1.0 X-Originating-IP: [10.0.74.65] X-ClientProxiedBy: SHCAS01.spreadtrum.com (10.0.1.201) To BJMBX01.spreadtrum.com (10.0.64.7) X-MAIL: SHSQR01.spreadtrum.com 28GAwVml097851 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Zhaoyang Huang Check the global free list again even if rmqueue_bulk failed for pcp pages = when there is ongoing reclaiming, which could eliminate potential direct reclaim= by chance. Signed-off-by: Zhaoyang Huang --- mm/page_alloc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index e008a3d..7e99f7d 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -3729,7 +3729,8 @@ struct page *rmqueue(struct zone *preferred_zone, migratetype !=3D MIGRATE_MOVABLE) { page =3D rmqueue_pcplist(preferred_zone, zone, order, gfp_flags, migratetype, alloc_flags); - goto out; + if (page || !test_bit(ZONE_RECLAIM_ACTIVE, &zone->flags)) + goto out; } } =20 --=20 1.9.1