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=-3.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 ACCFCC55178 for ; Fri, 6 Nov 2020 10:36:02 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 22AD821707 for ; Fri, 6 Nov 2020 10:36:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b="rZIVSPh+" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 22AD821707 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=suse.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 3C4AE6B005C; Fri, 6 Nov 2020 05:36:01 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 34F296B005D; Fri, 6 Nov 2020 05:36:01 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 216926B0068; Fri, 6 Nov 2020 05:36:01 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0212.hostedemail.com [216.40.44.212]) by kanga.kvack.org (Postfix) with ESMTP id DFFDD6B005C for ; Fri, 6 Nov 2020 05:36:00 -0500 (EST) Received: from smtpin06.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 805C7181AEF10 for ; Fri, 6 Nov 2020 10:36:00 +0000 (UTC) X-FDA: 77453638080.06.neck44_470b5bf272d1 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin06.hostedemail.com (Postfix) with ESMTP id 553741003BACF for ; Fri, 6 Nov 2020 10:36:00 +0000 (UTC) X-HE-Tag: neck44_470b5bf272d1 X-Filterd-Recvd-Size: 2628 Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by imf03.hostedemail.com (Postfix) with ESMTP for ; Fri, 6 Nov 2020 10:35:59 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1604658958; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=JO9QaKV8QokxL9flHG3B/4fqlGVbc8b4XbTgyRZDSR0=; b=rZIVSPh+DJVp6WGxjNkY2MfA2nwZ+Msigbg75QgtsOaNuD6fZxXFYDGlC+lLylv82aHcC7 8+Z/JAbXmBhh3xRo0s0Y9/ORu8P1f/lZ+cEKD9dfX52sLpi7oY6VZyelPocvbX2lDHFlYM WKsq/6rngghwaUUVuSKmcsnEEnr0flU= Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 8F734AB8F; Fri, 6 Nov 2020 10:35:58 +0000 (UTC) Date: Fri, 6 Nov 2020 11:35:57 +0100 From: Michal Hocko To: Feng Tang Cc: Vlastimil Babka , Andrew Morton , Johannes Weiner , Matthew Wilcox , Mel Gorman , dave.hansen@intel.com, ying.huang@intel.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH 0/2] mm: fix OOMs for binding workloads to movable zone only node Message-ID: <20201106103557.GC7247@dhcp22.suse.cz> References: <20201105120818.GC21348@dhcp22.suse.cz> <4029c079-b1f3-f290-26b6-a819c52f5200@suse.cz> <20201105125828.GG21348@dhcp22.suse.cz> <20201105130710.GB16525@shbuild999.sh.intel.com> <20201105131245.GH21348@dhcp22.suse.cz> <20201105134305.GA16424@shbuild999.sh.intel.com> <20201105161612.GM21348@dhcp22.suse.cz> <20201106070656.GA129085@shbuild999.sh.intel.com> <20201106081026.GB7247@dhcp22.suse.cz> <20201106090857.GB129085@shbuild999.sh.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201106090857.GB129085@shbuild999.sh.intel.com> 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 Fri 06-11-20 17:08:57, Feng Tang wrote: [...] > You are right, there are quiet several types of page allocations failures. > The callstack in patch 2/2 is a GFP_HIGHUSER from pipe_write, and there > are more types of kernel allocation requests which will got blocked by > the differnt check. My RFC patch just gave a easiest one-for-all hack to > let them bypass it. > > Do we need to tackle them case by case? No, I do not think, how we can change those __GFP_HARDWALL without breaking the isolation. -- Michal Hocko SUSE Labs