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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 0709FC4361B for ; Tue, 15 Dec 2020 03:11:39 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id A3AAB22571 for ; Tue, 15 Dec 2020 03:11:38 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A3AAB22571 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 34D638D0051; Mon, 14 Dec 2020 22:11:38 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 2D2BE8D001C; Mon, 14 Dec 2020 22:11:38 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 19A778D0051; Mon, 14 Dec 2020 22:11:38 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0242.hostedemail.com [216.40.44.242]) by kanga.kvack.org (Postfix) with ESMTP id 01AC38D001C for ; Mon, 14 Dec 2020 22:11:37 -0500 (EST) Received: from smtpin01.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id C84792461 for ; Tue, 15 Dec 2020 03:11:37 +0000 (UTC) X-FDA: 77594041434.01.voice73_1e02b5027420 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin01.hostedemail.com (Postfix) with ESMTP id A80A31004DD97 for ; Tue, 15 Dec 2020 03:11:37 +0000 (UTC) X-HE-Tag: voice73_1e02b5027420 X-Filterd-Recvd-Size: 2459 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf44.hostedemail.com (Postfix) with ESMTP for ; Tue, 15 Dec 2020 03:11:37 +0000 (UTC) Date: Mon, 14 Dec 2020 19:11:35 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1608001896; bh=KunpOcCiWsC6mylgECf0VPABwhQiurq0yeOaBHPuU5A=; h=From:To:Subject:In-Reply-To:From; b=cM+QvqX5tYCSUWdkxjGeqgTUzdpIDGdsi6AoHf6nqBCsRSceyW+xkn05xX4+aVsN4 0JEydynNqcHIXOmLVSU8hFHPGQEfLEOE3IhpQh0ebPqHa/qR58uBRpbH8VYtEPfTUY dJ5boi6dw1qM8fEeHKDHwL+Br38DWpifhGa56gJU= From: Andrew Morton To: akpm@linux-foundation.org, linux-mm@kvack.org, mm-commits@vger.kernel.org, naoya.horiguchi@nec.com, osalvador@suse.de, torvalds@linux-foundation.org Subject: [patch 140/200] mm,hwpoison: drop unneeded pcplist draining Message-ID: <20201215031135.QyeIOFtPU%akpm@linux-foundation.org> In-Reply-To: <20201214190237.a17b70ae14f129e2dca3d204@linux-foundation.org> User-Agent: s-nail v14.8.16 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: From: Oscar Salvador Subject: mm,hwpoison: drop unneeded pcplist draining 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/20201013144447.6706-5-osalvador@suse.de Signed-off-by: Oscar Salvador Acked-by: Naoya Horiguchi Signed-off-by: Andrew Morton --- mm/madvise.c | 5 ----- 1 file changed, 5 deletions(-) --- a/mm/madvise.c~mmhwpoison-drop-unneeded-pcplist-draining +++ a/mm/madvise.c @@ -877,7 +877,6 @@ static long madvise_remove(struct vm_are static int madvise_inject_error(int behavior, unsigned long start, unsigned long end) { - struct zone *zone; unsigned long size; if (!capable(CAP_SYS_ADMIN)) @@ -922,10 +921,6 @@ static int madvise_inject_error(int beha 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 _