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=-12.7 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 2982BC433E7 for ; Tue, 13 Oct 2020 14:43:46 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id D492A2487D for ; Tue, 13 Oct 2020 14:43:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D492A2487D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 73A2F6B006C; Tue, 13 Oct 2020 10:43:42 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 672E06B006E; Tue, 13 Oct 2020 10:43:42 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 5AFC96B0070; Tue, 13 Oct 2020 10:43:42 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0118.hostedemail.com [216.40.44.118]) by kanga.kvack.org (Postfix) with ESMTP id 4ED516B006C for ; Tue, 13 Oct 2020 10:43:42 -0400 (EDT) Received: from smtpin21.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 0C33C8249980 for ; Tue, 13 Oct 2020 14:43:42 +0000 (UTC) X-FDA: 77367171084.21.angle93_5c1684f27204 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin21.hostedemail.com (Postfix) with ESMTP id 9410D180442DA for ; Tue, 13 Oct 2020 14:43:35 +0000 (UTC) X-HE-Tag: angle93_5c1684f27204 X-Filterd-Recvd-Size: 2098 Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by imf14.hostedemail.com (Postfix) with ESMTP for ; Tue, 13 Oct 2020 14:43:35 +0000 (UTC) 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 151DFB199; Tue, 13 Oct 2020 14:43:34 +0000 (UTC) From: Oscar Salvador To: n-horiguchi@ah.jp.nec.com Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Oscar Salvador Subject: [PATCH v5 4/4] mm,hwpoison: drop unneeded pcplist draining Date: Tue, 13 Oct 2020 16:44:47 +0200 Message-Id: <20201013144447.6706-5-osalvador@suse.de> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201013144447.6706-1-osalvador@suse.de> References: <20201013144447.6706-1-osalvador@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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. Signed-off-by: Oscar Salvador --- mm/madvise.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/mm/madvise.c b/mm/madvise.c index 416a56b8e757..c6b5524add58 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -877,7 +877,6 @@ static long madvise_remove(struct vm_area_struct *vma= , static int madvise_inject_error(int behavior, unsigned long start, unsigned long end) { - struct zone *zone; unsigned long size; =20 if (!capable(CAP_SYS_ADMIN)) @@ -922,10 +921,6 @@ static int madvise_inject_error(int behavior, return ret; } =20 - /* Ensure that all poisoned pages are removed from per-cpu lists */ - for_each_populated_zone(zone) - drain_all_pages(zone); - return 0; } #endif --=20 2.26.2