From patchwork Mon Sep 14 10:15:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oscar Salvador X-Patchwork-Id: 11773481 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 229D26CA for ; Mon, 14 Sep 2020 10:16:40 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id D1FE72076C for ; Mon, 14 Sep 2020 10:16:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D1FE72076C 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 7E76F6B0062; Mon, 14 Sep 2020 06:16:13 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 5BB3F8E0001; Mon, 14 Sep 2020 06:16:13 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 129396B006E; Mon, 14 Sep 2020 06:16:12 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0154.hostedemail.com [216.40.44.154]) by kanga.kvack.org (Postfix) with ESMTP id AA8B76B0068 for ; Mon, 14 Sep 2020 06:16:12 -0400 (EDT) Received: from smtpin06.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 5D48B1807660A for ; Mon, 14 Sep 2020 10:16:07 +0000 (UTC) X-FDA: 77261261574.06.nerve20_35024d927107 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin06.hostedemail.com (Postfix) with ESMTP id 1EA46102E35C5 for ; Mon, 14 Sep 2020 10:16:07 +0000 (UTC) X-Spam-Summary: 1,0,0,,d41d8cd98f00b204,osalvador@suse.de,,RULES_HIT:30054:30064,0,RBL:195.135.220.15:@suse.de:.lbl8.mailshell.net-64.100.201.201 62.2.6.2;04y8paey3zxj6njxbpask7xez85qmocgc3kuws4948mpfpgmyyhir1camwswnpy.tsjs6ncjqxm33eqw3id3pxhyb5jeb5g4tpfhub5utr59dtgew56q3mrobeqo3fm.c-lbl8.mailshell.net-223.238.255.100,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fp,MSBL:0,DNSBL:neutral,Custom_rules:0:0:0,LFtime:23,LUA_SUMMARY:none X-HE-Tag: nerve20_35024d927107 X-Filterd-Recvd-Size: 2341 Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by imf30.hostedemail.com (Postfix) with ESMTP for ; Mon, 14 Sep 2020 10:16:06 +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 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> X-Rspamd-Queue-Id: 1EA46102E35C5 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam03 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. 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