Received: by 2002:ac0:bc90:0:0:0:0:0 with SMTP id a16csp887498img; Fri, 22 Mar 2019 10:40:14 -0700 (PDT) X-Google-Smtp-Source: APXvYqzW/pCwJZt2lB4CpKBiJx+EvnrRs3g5R57f3jMixi4R4sZqaQDiaz4kx8lmrET1EoQLLhzU X-Received: by 2002:a63:c24d:: with SMTP id l13mr10313958pgg.166.1553276414391; Fri, 22 Mar 2019 10:40:14 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1553276414; cv=none; d=google.com; s=arc-20160816; b=w0KqtRKD3yqVYEaR5tv1Af0vRjjX3Gjmwv6papO16N7PC94pa4r4SFJJxmt/ka/ho3 bzFxV5WpdNXo74Mq0rcWhL5Wx3Lp8t0NLUfQHa6y2l/mOk+HBNqENOw+Tc+WR0LR1GhD y0728p3rC9reQgMyKrLm2weUq2edlt4mP7EVjC2ladM1cxikJUPEt89k9L5ocL9DO0WK XGeT4CSYLvb+1dUsfxfutHJXHlkCT5F5gYH1Oz7Luu2uDsklWKV2g9rCenrgWTrxthH4 B1Fx32iQrqOmIHDl+PuhI2s9d1us2JJFC2kPoZO00eSouMN9wsvdE5ytYqA3pQMAQve9 gTiQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:feedback-id:mime-version:user-agent :references:message-id:in-reply-to:subject:cc:to:from:date :dkim-signature; bh=t1z9bclqYJz9qIJ/zfgRXzGl2XelZgLxHQlIn9FSkNM=; b=izl4qEuNrWKLBucZB8G3l0Z42qSVTn7y8kUvL0V4KaNG0nn2cT3dV8KZzuI/f/XMc5 blEWrH0uXvglfSof7ojhERxFu0JqsCuEs40gFtY5F8VyVSUK1n8zPOIxm+5ym11YNqSg WTS0dSsL0RCWRKQExtOL4OpSmLfkyIA7fpZUk6FQ9J+F6H1H5/uWl9L+U9AsG/8myLYI 8amG7fz8lJydc2WWLipF80Z23DiUdn7KjSAJDa9u8wrwzwOQ7wRuvNkhQMwhyRKZvv5R FlHB4iw9cg0B1RX96hn60m/el+tD6rDH2n/Gfa9/NNdzrZjrYl+FzkWQi+ZOdgk7h8rS Ludg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@amazonses.com header.s=6gbrjpgwjskckoa6a5zn6fwqkn67xbtw header.b=Nd4IJAJX; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id d16si7054915pgh.440.2019.03.22.10.39.59; Fri, 22 Mar 2019 10:40:14 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@amazonses.com header.s=6gbrjpgwjskckoa6a5zn6fwqkn67xbtw header.b=Nd4IJAJX; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728705AbfCVRiv (ORCPT + 99 others); Fri, 22 Mar 2019 13:38:51 -0400 Received: from a9-30.smtp-out.amazonses.com ([54.240.9.30]:49122 "EHLO a9-30.smtp-out.amazonses.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725981AbfCVRiu (ORCPT ); Fri, 22 Mar 2019 13:38:50 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/simple; s=6gbrjpgwjskckoa6a5zn6fwqkn67xbtw; d=amazonses.com; t=1553276329; h=Date:From:To:cc:Subject:In-Reply-To:Message-ID:References:MIME-Version:Content-Type:Feedback-ID; bh=t1z9bclqYJz9qIJ/zfgRXzGl2XelZgLxHQlIn9FSkNM=; b=Nd4IJAJXLmYk98fCzo8idP6HAyo4V4hZpf6qrUB0y5mgA//XLNG/C1SpCJ5k5fpk UTWPhHNWCFD7X0vLD48rO9PKd6v/AvtPotP49TaJygzPMJISJOyDeaYvUpAY8sfSb5g pFlBaeftFulOATvkj9nCpD2xZB3ZpX2XxZ1qY69s= Date: Fri, 22 Mar 2019 17:38:49 +0000 From: Christopher Lameter X-X-Sender: cl@nuc-kabylake To: Li RongQing cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrew Morton , Joonsoo Kim , David Rientjes , Pekka Enberg Subject: Re: [PATCH] mm, slab: remove unneed check in cpuup_canceled In-Reply-To: <1553159353-5056-1-git-send-email-lirongqing@baidu.com> Message-ID: <01000169a67bdd50-bf4ef6a0-c4f5-4156-b458-41885eac10ac-000000@email.amazonses.com> References: <1553159353-5056-1-git-send-email-lirongqing@baidu.com> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-SES-Outgoing: 2019.03.22-54.240.9.30 Feedback-ID: 1.us-east-1.fQZZZ0Xtj2+TD7V5apTT/NrT6QKuPgzCT/IC7XYgDKI=:AmazonSES Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 21 Mar 2019, Li RongQing wrote: > nc is a member of percpu allocation memory, and impossible NULL Acked-by: Christoph Lameter