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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 B8D74C432BE for ; Sat, 7 Aug 2021 18:56:34 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 2BA6E6108D for ; Sat, 7 Aug 2021 18:56:34 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 2BA6E6108D 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=kvack.org Received: by kanga.kvack.org (Postfix) id 77E4B6B006C; Sat, 7 Aug 2021 14:56:33 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 72F236B0071; Sat, 7 Aug 2021 14:56:33 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 61D158D0001; Sat, 7 Aug 2021 14:56:33 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0197.hostedemail.com [216.40.44.197]) by kanga.kvack.org (Postfix) with ESMTP id 4633F6B006C for ; Sat, 7 Aug 2021 14:56:33 -0400 (EDT) Received: from smtpin15.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id D71DA180ACF8F for ; Sat, 7 Aug 2021 18:56:32 +0000 (UTC) X-FDA: 78449190624.15.5A026D4 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf15.hostedemail.com (Postfix) with ESMTP id 6E179D00B815 for ; Sat, 7 Aug 2021 18:56:32 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 1D59F60EBC; Sat, 7 Aug 2021 18:56:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1628362591; bh=R4KUtAstqXIu436XTZFaUdZcmaVE6hSEsEnvEkhR7y8=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=t7dPrU/1MCltJi1oDzxqNIGo8JYvyP0pLs2pCPY7uRqI5e568Vl/aHvm0NZGCTLB2 L+UrsPJUiV/enlnUkL2hsFUkon0/2pbXXixkCE7Yh3EHC3xnAixdACATkopZhCaN9f zVZb5wDA/YrXr2zfqXAtGNVtT9Mw9qWCazjXCPxY= Date: Sat, 7 Aug 2021 11:56:25 -0700 From: Andrew Morton To: Miaohe Lin Cc: , , , , , , , , , , , Subject: Re: [PATCH v2 3/3] mm, memcg: get rid of percpu_charge_mutex lock Message-Id: <20210807115625.b09fdf35b0251206b252e19a@linux-foundation.org> In-Reply-To: <20210807082835.61281-4-linmiaohe@huawei.com> References: <20210807082835.61281-1-linmiaohe@huawei.com> <20210807082835.61281-4-linmiaohe@huawei.com> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.32; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 6E179D00B815 Authentication-Results: imf15.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b="t7dPrU/1"; dmarc=none; spf=pass (imf15.hostedemail.com: domain of akpm@linux-foundation.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org X-Stat-Signature: ddwss1ru1nqug8u1t3e4njghpq67dqe7 X-HE-Tag: 1628362592-552271 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: On Sat, 7 Aug 2021 16:28:35 +0800 Miaohe Lin wrote: > We should get rid of percpu_charge_mutex lock as Johannes Weiner said, I'll skip this one for now - it all seems rather uncertain.