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=-3.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 4A1F1C2D0E4 for ; Sun, 15 Nov 2020 12:18:53 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 0723D22384 for ; Sun, 15 Nov 2020 12:18:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="Fc13oNdA" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0723D22384 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 277736B005C; Sun, 15 Nov 2020 07:18:51 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 257B46B005D; Sun, 15 Nov 2020 07:18:51 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 18BE16B0068; Sun, 15 Nov 2020 07:18:51 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id E3DEF6B005C for ; Sun, 15 Nov 2020 07:18:50 -0500 (EST) Received: from smtpin15.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 876EA180AD811 for ; Sun, 15 Nov 2020 12:18:50 +0000 (UTC) X-FDA: 77486556420.15.foot54_570e19727320 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin15.hostedemail.com (Postfix) with ESMTP id 68DF81814B0C7 for ; Sun, 15 Nov 2020 12:18:50 +0000 (UTC) X-HE-Tag: foot54_570e19727320 X-Filterd-Recvd-Size: 2033 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf19.hostedemail.com (Postfix) with ESMTP for ; Sun, 15 Nov 2020 12:18:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=SqBkoMisN8DRT7Ugl7/Kskn70ZM+RV1ZXq04Kt9+Zxk=; b=Fc13oNdA5LMGuxAfQ+cshr3PRq uKzkSPTQ1CFEqEsskFx41rAFTodBdHAnA2A7YA3Nps1cnwwZkgYsB2pw3M1Dp5GQFRMKytpA+Fu1S 0cPoQUJ2wU9gQCnPjrU35rXPhLGuRr3KBtiWl2S+CO8anENkcFKfXvF1cbXVwzl75fUMdCSOZ112F qFXivRmLn+hKZqwfukred3rOLgyM9222Voh5Wmpr9eR8HIivgDrvCTXS+juikfiNiI3adujhz3l3O d+5/XNH06bFAWtzJ8sL22st8+nRyCoHLTHysKdAYiHd0Mr+5gR4dGRz5NYTfVRX5EtwXjv+qQkbS7 N/Kjjm5w==; Received: from willy by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1keGzE-00041W-Am; Sun, 15 Nov 2020 12:18:28 +0000 Date: Sun, 15 Nov 2020 12:18:28 +0000 From: Matthew Wilcox To: Dongli Zhang Cc: linux-mm@kvack.org, netdev@vger.kernel.org, aruna.ramakrishna@oracle.com, bert.barbe@oracle.com, rama.nichanamatlu@oracle.com, venkat.x.venkatsubra@oracle.com, manjunath.b.patil@oracle.com, joe.jin@oracle.com, srinivas.eeda@oracle.com, stable@vger.kernel.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, davem@davemloft.net, edumazet@google.com, vbabka@suse.cz Subject: Re: [PATCH v2 1/1] page_frag: Recover from memory pressure Message-ID: <20201115121828.GQ17076@casper.infradead.org> References: <20201115065106.10244-1-dongli.zhang@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201115065106.10244-1-dongli.zhang@oracle.com> X-Bogosity: Ham, tests=bogofilter, spamicity=0.000063, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Sat, Nov 14, 2020 at 10:51:06PM -0800, Dongli Zhang wrote: > + if (nc->pfmemalloc) { You missed the unlikely() change that Eric recommended.