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=-12.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 73637C2BC11 for ; Mon, 14 Sep 2020 10:16:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 438552192A for ; Mon, 14 Sep 2020 10:16:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726440AbgINKQc (ORCPT ); Mon, 14 Sep 2020 06:16:32 -0400 Received: from mx2.suse.de ([195.135.220.15]:44812 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726406AbgINKQG (ORCPT ); Mon, 14 Sep 2020 06:16:06 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 0F233B266; Mon, 14 Sep 2020 10:16:21 +0000 (UTC) From: Oscar Salvador To: akpm@linux-foundation.org Cc: naoya.horiguchi@nec.com, mhocko@kernel.org, tony.luck@intel.com, cai@lca.pw, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Oscar Salvador , Oscar Salvador , Stephen Rothwell Subject: [PATCH v3 4/5] mm,hwpoison: drop unneeded pcplist draining Date: Mon, 14 Sep 2020 12:15:58 +0200 Message-Id: <20200914101559.17103-5-osalvador@suse.de> X-Mailer: git-send-email 2.13.7 In-Reply-To: <20200914101559.17103-1-osalvador@suse.de> References: <20200914101559.17103-1-osalvador@suse.de> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org memory_failure and soft_offline_path paths now drain pcplists by calling get_hwpoison_page. memory_failure flags the page as HWPoison before, so that page cannot longer go into a pcplist, and soft_offline_page only flags a page as HWPoison if 1) we took the page off a buddy freelist 2) the page was in-use and we migrated it 3) was a clean pagecache. Because of that, a page cannot longer be poisoned and be in a pcplist. Link: https://lkml.kernel.org/r/20200908075626.11976-5-osalvador@suse.de Signed-off-by: Oscar Salvador Cc: Michal Hocko Cc: Naoya Horiguchi Cc: Oscar Salvador Cc: Qian Cai Cc: Tony Luck Signed-off-by: Andrew Morton Signed-off-by: Stephen Rothwell --- mm/madvise.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/mm/madvise.c b/mm/madvise.c index 4ce66bab53dd..4bac8e85497a 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -917,10 +917,6 @@ static int madvise_inject_error(int behavior, return ret; } - /* Ensure that all poisoned pages are removed from per-cpu lists */ - for_each_populated_zone(zone) - drain_all_pages(zone); - return 0; } #endif -- 2.26.2