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=-5.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 B7B8DC2D0A3 for ; Fri, 6 Nov 2020 08:08:19 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 489C6208B3 for ; Fri, 6 Nov 2020 08:08:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 489C6208B3 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id BA8726B006C; Fri, 6 Nov 2020 03:08:18 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id B575B6B0070; Fri, 6 Nov 2020 03:08:18 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A46DD6B0075; Fri, 6 Nov 2020 03:08:18 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0188.hostedemail.com [216.40.44.188]) by kanga.kvack.org (Postfix) with ESMTP id 79C066B006C for ; Fri, 6 Nov 2020 03:08:18 -0500 (EST) Received: from smtpin02.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 1C6E5362A for ; Fri, 6 Nov 2020 08:08:18 +0000 (UTC) X-FDA: 77453265876.02.spot31_2f0b79a272d1 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin02.hostedemail.com (Postfix) with ESMTP id F16B710097AA1 for ; Fri, 6 Nov 2020 08:08:17 +0000 (UTC) X-HE-Tag: spot31_2f0b79a272d1 X-Filterd-Recvd-Size: 1370 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) by imf07.hostedemail.com (Postfix) with ESMTP for ; Fri, 6 Nov 2020 08:08:17 +0000 (UTC) Received: by verein.lst.de (Postfix, from userid 2407) id BF3E968B05; Fri, 6 Nov 2020 09:08:15 +0100 (CET) Date: Fri, 6 Nov 2020 09:08:15 +0100 From: Christoph Hellwig To: Matthew Wilcox Cc: Kent Overstreet , linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, hch@lst.de Subject: Re: [PATCH v2 02/18] mm/filemap: Remove dynamically allocated array from filemap_read Message-ID: <20201106080815.GC31585@lst.de> References: <20201104204219.23810-1-willy@infradead.org> <20201104204219.23810-3-willy@infradead.org> <20201104213005.GB3365678@moria.home.lan> <20201105001302.GF17076@casper.infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201105001302.GF17076@casper.infradead.org> User-Agent: Mutt/1.5.17 (2007-11-01) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000047, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Thu, Nov 05, 2020 at 12:13:02AM +0000, Matthew Wilcox wrote: > I have the beginnings of a patch for that, but I got busy with other stuff > and didn't finish it. If we have numbers that we want larger batch sizes than the current pagevec PAGEVEC_SIZE this is the way to go insted of special casing it in one path.