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=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 36C6FC433E0 for ; Wed, 10 Feb 2021 08:53:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DA3B564E4B for ; Wed, 10 Feb 2021 08:53:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229562AbhBJIx2 (ORCPT ); Wed, 10 Feb 2021 03:53:28 -0500 Received: from outbound-smtp13.blacknight.com ([46.22.139.230]:37291 "EHLO outbound-smtp13.blacknight.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229452AbhBJIwZ (ORCPT ); Wed, 10 Feb 2021 03:52:25 -0500 X-Greylist: delayed 570 seconds by postgrey-1.27 at vger.kernel.org; Wed, 10 Feb 2021 03:52:24 EST Received: from mail.blacknight.com (pemlinmail03.blacknight.ie [81.17.254.16]) by outbound-smtp13.blacknight.com (Postfix) with ESMTPS id 5BCA11C3429 for ; Wed, 10 Feb 2021 08:42:00 +0000 (GMT) Received: (qmail 21703 invoked from network); 10 Feb 2021 08:42:00 -0000 Received: from unknown (HELO techsingularity.net) (mgorman@techsingularity.net@[84.203.22.4]) by 81.17.254.9 with ESMTPSA (AES256-SHA encrypted, authenticated); 10 Feb 2021 08:42:00 -0000 Date: Wed, 10 Feb 2021 08:41:55 +0000 From: Mel Gorman To: Jesper Dangaard Brouer Cc: Chuck Lever , "mgorman@suse.de" , Linux NFS Mailing List , "linux-mm@kvack.org" Subject: Re: alloc_pages_bulk() Message-ID: <20210210084155.GA3697@techsingularity.net> References: <2A0C36E7-8CB0-486F-A8DB-463CA28C5C5D@oracle.com> <20210209113108.1ca16cfa@carbon> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline In-Reply-To: <20210209113108.1ca16cfa@carbon> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org On Tue, Feb 09, 2021 at 11:31:08AM +0100, Jesper Dangaard Brouer wrote: > > > Neil Brown pointed me to this old thread: > > > > > > https://lore.kernel.org/lkml/20170109163518.6001-1-mgorman@techsingularity.net/ > > > > > > We see that many of the prerequisites are in v5.11-rc, but > > > alloc_page_bulk() is not. I tried forward-porting 4/4 in that > > > series, but enough internal APIs have changed since 2017 that > > > the patch does not come close to applying and compiling. > > I forgot that this was never merged. It is sad as Mel showed huge > improvement with his work. > > > > I'm wondering: > > > > > > a) is there a newer version of that work? > > > > > Mel, why was this work never merged upstream? > Lack of realistic consumers to drive it forward, finalise the API and confirm it was working as expected. It eventually died as a result. If it was reintroduced, it would need to be forward ported and then implement at least one user on top. -- Mel Gorman SUSE Labs