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=-5.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham 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 816E6C34031 for ; Tue, 18 Feb 2020 04:47:36 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 264DC20722 for ; Tue, 18 Feb 2020 04:47:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 264DC20722 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=fromorbit.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 82CE06B0003; Mon, 17 Feb 2020 23:47:35 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 7DE8E6B0006; Mon, 17 Feb 2020 23:47:35 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 6F3226B0007; Mon, 17 Feb 2020 23:47:35 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0125.hostedemail.com [216.40.44.125]) by kanga.kvack.org (Postfix) with ESMTP id 558FD6B0003 for ; Mon, 17 Feb 2020 23:47:35 -0500 (EST) Received: from smtpin26.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id EB449181AEF23 for ; Tue, 18 Feb 2020 04:47:34 +0000 (UTC) X-FDA: 76502014428.26.chess66_2504d4fe2fd32 X-HE-Tag: chess66_2504d4fe2fd32 X-Filterd-Recvd-Size: 2394 Received: from mail105.syd.optusnet.com.au (mail105.syd.optusnet.com.au [211.29.132.249]) by imf32.hostedemail.com (Postfix) with ESMTP for ; Tue, 18 Feb 2020 04:47:34 +0000 (UTC) Received: from dread.disaster.area (pa49-179-138-28.pa.nsw.optusnet.com.au [49.179.138.28]) by mail105.syd.optusnet.com.au (Postfix) with ESMTPS id D76033A19D6; Tue, 18 Feb 2020 15:47:31 +1100 (AEDT) Received: from dave by dread.disaster.area with local (Exim 4.92.3) (envelope-from ) id 1j3unC-0005hw-70; Tue, 18 Feb 2020 15:47:30 +1100 Date: Tue, 18 Feb 2020 15:47:30 +1100 From: Dave Chinner To: Matthew Wilcox Cc: linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, cluster-devel@redhat.com, ocfs2-devel@oss.oracle.com, linux-xfs@vger.kernel.org Subject: Re: [PATCH v6 01/19] mm: Return void from various readahead functions Message-ID: <20200218044730.GF10776@dread.disaster.area> References: <20200217184613.19668-1-willy@infradead.org> <20200217184613.19668-2-willy@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200217184613.19668-2-willy@infradead.org> User-Agent: Mutt/1.10.1 (2018-07-13) X-Optus-CM-Score: 0 X-Optus-CM-Analysis: v=2.3 cv=LYdCFQXi c=1 sm=1 tr=0 a=zAxSp4fFY/GQY8/esVNjqw==:117 a=zAxSp4fFY/GQY8/esVNjqw==:17 a=jpOVt7BSZ2e4Z31A5e1TngXxSK0=:19 a=kj9zAlcOel0A:10 a=l697ptgUJYAA:10 a=JfrnYn6hAAAA:8 a=20KFwNOVAAAA:8 a=7-415B0cAAAA:8 a=XMwvCbM7UuQ64GsG45gA:9 a=CjuIK1q_8ugA:10 a=1CNFftbPRP8L7MoqJWF3:22 a=biEYGPWJfzWAr4FL6Ov7:22 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 Mon, Feb 17, 2020 at 10:45:42AM -0800, Matthew Wilcox wrote: > From: "Matthew Wilcox (Oracle)" > > ondemand_readahead has two callers, neither of which use the return value. > That means that both ra_submit and __do_page_cache_readahead() can return > void, and we don't need to worry that a present page in the readahead > window causes us to return a smaller nr_pages than we ought to have. > > Signed-off-by: Matthew Wilcox (Oracle) Looks good. Reviewed-by: Dave Chinner -- Dave Chinner david@fromorbit.com