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[23.128.96.18]) by mx.google.com with ESMTP id cy18si10926023edb.148.2020.09.15.15.23.38; Tue, 15 Sep 2020 15:24:01 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@chrisdown.name header.s=google header.b=R2LVUI6b; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=chrisdown.name Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727780AbgIOWWt (ORCPT + 99 others); Tue, 15 Sep 2020 18:22:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52526 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727313AbgIOQ0T (ORCPT ); Tue, 15 Sep 2020 12:26:19 -0400 Received: from mail-wr1-x442.google.com (mail-wr1-x442.google.com [IPv6:2a00:1450:4864:20::442]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A1E96C06178A for ; Tue, 15 Sep 2020 09:26:06 -0700 (PDT) Received: by mail-wr1-x442.google.com with SMTP id o5so3935430wrn.13 for ; Tue, 15 Sep 2020 09:26:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chrisdown.name; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=dHrapBwpsWvrvFzuOTk0uSyWUcs2j2nE+q6aaks+S8Q=; b=R2LVUI6b3LVxmcrTw2T207w1f3CmBOTEi9U99KcQFNJPkUZB7c1kk0ZIGwsU/OCBLe /HEcFoxE65avOGVOhNe5ISlZ8qfobmAoFadWBJ+ndYPWqhHZ6joZqsANBSU8I0IZQJEA BpabIz5FjIi843oMPOrEpHjSITrza8CPGZVaw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=dHrapBwpsWvrvFzuOTk0uSyWUcs2j2nE+q6aaks+S8Q=; b=unbwcY75eIotuTLVOfuQkBSdJWzWAMHRyeBtx04VTqkBFVCmaTJ7wYm8NsC+seiU24 wjLazJqBqw1LRN0cORca2RXu9BKDYQtntOtJh+KuSn7BzxhfhTs1SoVWu7lTawNuFmkQ xkAIhtcLtIlC62XlbIgvcwwq+3hlJtdS5h9z6eZkSGLF/V7Jgqi8DM6E+VDAomf1YSxX pl2WNHS9sEC7axuwbIagx79ZdjZvLc+i90anyaFehIIYIbBsgMAuCtJAZvI5p3PNaaM0 kRU9X2CcLlQq6uDGWfJfhi4rcPMuRhNB3Z8DS5fheJlDv3KXz80GwNujNaic1NJyD09S D0Fw== X-Gm-Message-State: AOAM5331npzDSyRYwlE0PyzIR/aRyk9n0httl08fX/MqHfDnWbKjXvLY SmIt9MVRUUsbrEDbTkEpV1ch24TU7+exa6VF X-Received: by 2002:a5d:6301:: with SMTP id i1mr21382993wru.323.1600187165281; Tue, 15 Sep 2020 09:26:05 -0700 (PDT) Received: from localhost ([2a01:4b00:8432:8a00:63de:dd93:20be:f460]) by smtp.gmail.com with ESMTPSA id 92sm29778577wra.19.2020.09.15.09.26.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 15 Sep 2020 09:26:04 -0700 (PDT) Date: Tue, 15 Sep 2020 17:26:04 +0100 From: Chris Down To: Michal Hocko Cc: zangchunxin@bytedance.com, akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Muchun Song Subject: Re: [PATCH v4] mm/vmscan: add a fatal signals check in drop_slab_node Message-ID: <20200915162604.GB2581123@chrisdown.name> References: <20200915132741.84869-1-zangchunxin@bytedance.com> <20200915144737.GA2581123@chrisdown.name> <20200915145533.GG3736@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <20200915145533.GG3736@dhcp22.suse.cz> User-Agent: Mutt/1.14.6 (2020-07-11) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Michal Hocko writes: >On Tue 15-09-20 15:47:37, Chris Down wrote: >> zangchunxin@bytedance.com writes: >> > + if (signal_pending(current)) >> > + return; >> >> This doesn't match your patch title, please update it. :-) > >I have to admit I have completely missed this and I think that this >should better be fatal_signal_pending because that would make sure that >the userspace will not see an incomplete operation. This is a general >practice for other bail outs as well. Oh sorry, to be clear, I meant the patch should match the title, not the other way around.