Received: by 2002:ac0:a594:0:0:0:0:0 with SMTP id m20-v6csp3180950imm; Fri, 25 May 2018 00:52:59 -0700 (PDT) X-Google-Smtp-Source: AB8JxZqYfVn9f6P5SByijvAuWEhoELgE2aSnasIJaynfybWQOHwWQyhXPaYrnl4Udm/F05sjoSva X-Received: by 2002:a17:902:43a4:: with SMTP id j33-v6mr1547862pld.118.1527234779326; Fri, 25 May 2018 00:52:59 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1527234779; cv=none; d=google.com; s=arc-20160816; b=Tp99Y1Smdyj6d3zRUFq1ZbTXf/62WgIQ7UuJj3GY+ouhpKClRgebKO72tiGZV8/io0 H5wlRThM62qs+8DUOGSPjbsvykrfAx/64r9An0zD55qVqmLHSKqN5o9Eyop+5//SjF2x DUO8qVnF0sQU/s94nud7TfIt8rLfIWsx8JyqwdzzdZavmVPA8Ca9u6lRO3DtGEyS58dM 4yvWAcBTW6oJ/Fp18SHMDL7KaOlIxUlAXGsl6FF9g2StNGqfH61HYi6qzlbY5o5Pyvu8 Rfqozr4JO8SWf+17ZQdbGzAM7ZNz8cPNK5qJC7E+bovRWmx+48zflgyvDvg/di2p6he4 2Cbw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:arc-authentication-results; bh=7HBEx9eJnHSlxUtOjFwTU1Djii7QRPTwcYBFuoan+f0=; b=cG7xwpbQgJe0wCBgwR5D5NdkwCNnJUNQMInysrl4ADc4rxD8VjoIaJHOe3bYNqXZav HVdSjb2e/nfGxy9nV7aG0Wt0f/twS4B9vylhqTMaAq/2vYSejbz96R/EgBdC5dN6E4Ms W4IrM303vqk2ofRXCMf1pExbN9UfgDXcD0uyDs0FdiD/aoTN3uSbiTjQ92oTLKeSxdLE t1JBmxpWDAXz0AXOLNCqmN6xBzCPciI8zix2j5Id8kqn28fv6DuxVERBz0JCXCm9aRcd RMO4KDs3f7BIwA8YfEdFz91Lc4uReojOnNLtMk/AY0Phguc4EWXLb5aaWfzULXg2abai LNbg== ARC-Authentication-Results: i=1; mx.google.com; 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; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id v69-v6si2525250pgb.609.2018.05.25.00.52.45; Fri, 25 May 2018 00:52:59 -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; 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; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935987AbeEYHwW (ORCPT + 99 others); Fri, 25 May 2018 03:52:22 -0400 Received: from mx2.suse.de ([195.135.220.15]:42188 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935951AbeEYHwT (ORCPT ); Fri, 25 May 2018 03:52:19 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (charybdis-ext-too.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 0C6DFAF7C; Fri, 25 May 2018 07:52:18 +0000 (UTC) Date: Fri, 25 May 2018 09:52:17 +0200 From: Michal Hocko To: Randy Dunlap Cc: Jonathan Corbet , LKML , linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, "Darrick J. Wong" , David Sterba Subject: Re: [PATCH] doc: document scope NOFS, NOIO APIs Message-ID: <20180525075217.GF11881@dhcp22.suse.cz> References: <20180424183536.GF30619@thunk.org> <20180524114341.1101-1-mhocko@kernel.org> <6c9df175-df6c-2531-b90c-318e4fff72bb@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <6c9df175-df6c-2531-b90c-318e4fff72bb@infradead.org> User-Agent: Mutt/1.9.5 (2018-04-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu 24-05-18 09:37:18, Randy Dunlap wrote: > On 05/24/2018 04:43 AM, Michal Hocko wrote: [...] > > +The traditional way to avoid this deadlock problem is to clear __GFP_FS > > +resp. __GFP_IO (note the later implies clearing the first as well) in > > latter ? No I really meant that clearing __GFP_IO implies __GFP_FS clearing -- Michal Hocko SUSE Labs