Message ID | 20200904233527.1lOZT1GXC%akpm@linux-foundation.org (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <SRS0=0xW6=CN=kvack.org=owner-linux-mm@kernel.org> 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 1068213B1 for <patchwork-linux-mm@patchwork.kernel.org>; Fri, 4 Sep 2020 23:35:31 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id B4AC22087C for <patchwork-linux-mm@patchwork.kernel.org>; Fri, 4 Sep 2020 23:35:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="pqjIXMYL" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B4AC22087C 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 D855C6B005A; Fri, 4 Sep 2020 19:35:29 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id D5D636B005C; Fri, 4 Sep 2020 19:35:29 -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 C737F6B005D; Fri, 4 Sep 2020 19:35:29 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0117.hostedemail.com [216.40.44.117]) by kanga.kvack.org (Postfix) with ESMTP id B19726B005A for <linux-mm@kvack.org>; Fri, 4 Sep 2020 19:35:29 -0400 (EDT) Received: from smtpin07.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 7A115181AC9CB for <linux-mm@kvack.org>; Fri, 4 Sep 2020 23:35:29 +0000 (UTC) X-FDA: 77226987978.07.swing27_1d15e34270b6 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin07.hostedemail.com (Postfix) with ESMTP id 4FE011803F9B0 for <linux-mm@kvack.org>; Fri, 4 Sep 2020 23:35:29 +0000 (UTC) X-Spam-Summary: 1,0,0,20c186722f8c8386,d41d8cd98f00b204,akpm@linux-foundation.org,,RULES_HIT:41:355:379:800:960:966:967:973:988:989:1260:1263:1345:1359:1381:1431:1437:1534:1542:1711:1730:1747:1777:1792:2196:2199:2393:2525:2559:2563:2682:2685:2693:2859:2902:2933:2937:2939:2942:2945:2947:2951:2954:3022:3138:3139:3140:3141:3142:3353:3865:3867:3870:3871:3872:3874:3934:3936:3938:3941:3944:3947:3950:3953:3956:3959:4321:4385:5007:6261:6653:7576:7875:8660:9025:9038:9391:9545:10004:10913:11026:11473:11658:11914:12043:12048:12295:12297:12438:12517:12519:12555:12679:12783:12895:12986:13148:13230:14181:14721:14849:21080:21433:21451:21627:21819:21939:30054:30056,0,RBL:198.145.29.99:@linux-foundation.org:.lbl8.mailshell.net-64.100.201.201 62.2.0.100;04yf1x947shkhnbjwuktj5z4jqwqbyp6ciw1gsb488ha789ndyacq5yixiez6rx.tpe9kktzf8k6mea1ust9rewbrry3cqo13gkqtudyxhmqay54s46traubjpxu1qn.e-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: X-HE-Tag: swing27_1d15e34270b6 X-Filterd-Recvd-Size: 3635 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf15.hostedemail.com (Postfix) with ESMTP for <linux-mm@kvack.org>; Fri, 4 Sep 2020 23:35:28 +0000 (UTC) Received: from localhost.localdomain (c-71-198-47-131.hsd1.ca.comcast.net [71.198.47.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id CCED6208FE; Fri, 4 Sep 2020 23:35:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1599262528; bh=McC9JkzlgiqDtm84S0OpJILFQ702Wqlavhc8g5GZztc=; h=Date:From:To:Subject:In-Reply-To:From; b=pqjIXMYLfrZM5NKaZzZurJ38iskOUrKhJy79fjYeRysgPQ7w+LSzym6M9JyN/LQDS jFXt65OR2N88BJu0GbDvdsxfmSNVwbQySBZKHZKs3Id4si7A8ORKW7U0Oa8Lzw4o9g 3T+xfZKPNV0RycWgjRzlaEIbAsDDgxF8EisjpEIw= Date: Fri, 04 Sep 2020 16:35:27 -0700 From: Andrew Morton <akpm@linux-foundation.org> To: akpm@linux-foundation.org, chris@chrisdown.name, hannes@cmpxchg.org, linux-mm@kvack.org, mhocko@suse.com, mm-commits@vger.kernel.org, torvalds@linux-foundation.org, xlpang@linux.alibaba.com Subject: [patch 02/19] mm: memcg: fix memcg reclaim soft lockup Message-ID: <20200904233527.1lOZT1GXC%akpm@linux-foundation.org> In-Reply-To: <20200904163454.4db0e6ce0c4584d2653678a3@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Rspamd-Queue-Id: 4FE011803F9B0 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam04 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: <linux-mm.kvack.org> |
Series |
[01/19] memcg: fix use-after-free in uncharge_batch
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expand
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--- a/mm/vmscan.c~mm-memcg-fix-memcg-reclaim-soft-lockup +++ a/mm/vmscan.c @@ -2615,6 +2615,14 @@ static void shrink_node_memcgs(pg_data_t unsigned long reclaimed; unsigned long scanned; + /* + * This loop can become CPU-bound when target memcgs + * aren't eligible for reclaim - either because they + * don't have any reclaimable pages, or because their + * memory is explicitly protected. Avoid soft lockups. + */ + cond_resched(); + mem_cgroup_calculate_protection(target_memcg, memcg); if (mem_cgroup_below_min(memcg)) {