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[54.240.9.99]) by mx.google.com with ESMTPS id x9si3069902qtm.7.2019.03.22.10.38.49 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 22 Mar 2019 10:38:49 -0700 (PDT) Received-SPF: pass (google.com: domain of 01000169a67bdd50-bf4ef6a0-c4f5-4156-b458-41885eac10ac-000000@amazonses.com designates 54.240.9.99 as permitted sender) client-ip=54.240.9.99; Authentication-Results: mx.google.com; dkim=pass header.i=@amazonses.com header.s=6gbrjpgwjskckoa6a5zn6fwqkn67xbtw header.b=Nd4IJAJX; spf=pass (google.com: domain of 01000169a67bdd50-bf4ef6a0-c4f5-4156-b458-41885eac10ac-000000@amazonses.com designates 54.240.9.99 as permitted sender) smtp.mailfrom=01000169a67bdd50-bf4ef6a0-c4f5-4156-b458-41885eac10ac-000000@amazonses.com 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: 2019.03.22-54.240.9.99 Feedback-ID: 1.us-east-1.fQZZZ0Xtj2+TD7V5apTT/NrT6QKuPgzCT/IC7XYgDKI=:AmazonSES 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 Thu, 21 Mar 2019, Li RongQing wrote: > nc is a member of percpu allocation memory, and impossible NULL Acked-by: Christoph Lameter