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=-3.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,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 3CCACC433DB for ; Thu, 18 Feb 2021 07:24:41 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 9EFA460238 for ; Thu, 18 Feb 2021 07:24:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9EFA460238 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id D62D06B0006; Thu, 18 Feb 2021 02:24:39 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id D12416B006C; Thu, 18 Feb 2021 02:24:39 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C02666B006E; Thu, 18 Feb 2021 02:24:39 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0003.hostedemail.com [216.40.44.3]) by kanga.kvack.org (Postfix) with ESMTP id A69F76B0006 for ; Thu, 18 Feb 2021 02:24:39 -0500 (EST) Received: from smtpin16.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 6B19B180AD80F for ; Thu, 18 Feb 2021 07:24:39 +0000 (UTC) X-FDA: 77830551078.16.jeans57_5311f1527653 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin16.hostedemail.com (Postfix) with ESMTP id 4E389100E690B for ; Thu, 18 Feb 2021 07:24:39 +0000 (UTC) X-HE-Tag: jeans57_5311f1527653 X-Filterd-Recvd-Size: 2290 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf30.hostedemail.com (Postfix) with ESMTP for ; Thu, 18 Feb 2021 07:24:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=/2v+QGn+KU5Y7ETX+f4m+/C9mqYX7kRJpIOupRvF2fw=; b=kyZS8ocnGrcZV4lsTNDl3BpyDz dtG2dlWSViX5bE/25KdLYGkIuQbJmPjbol66/1AmOcyvA5cdB5BCSAM62kN93HWw/f3EN80pIPjC5 TOAPr+85sW+VKW/Cd7u6yd8zjg7ij0DvNXmorpVNT3IjiD7O5MTAFkOxTiKlIjfiYW0+RYubUcRLA 7SIMfXRuNwqnryEJxN1Kf9Rb1qaeeLPteifBnBlGLowjgJQHr0uDjuHQ7jOaSsgam8vfrxi5LZxwa bAhyyADILF6RwTIu/nchrTFTzunLnu00KPL2MaxWz6fG5+9jCjuRNca4vuxqDfA33oDBljBYxd/rT 1oIXJmBg==; Received: from hch by casper.infradead.org with local (Exim 4.94 #2 (Red Hat Linux)) id 1lCdfs-001Mmr-1K; Thu, 18 Feb 2021 07:24:34 +0000 Date: Thu, 18 Feb 2021 07:24:32 +0000 From: Christoph Hellwig To: Joao Martins Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, Andrew Morton , Jason Gunthorpe , Doug Ledford , John Hubbard , Matthew Wilcox Subject: Re: [PATCH v4 0/4] mm/gup: page unpining improvements Message-ID: <20210218072432.GA325423@infradead.org> References: <20210212130843.13865-1-joao.m.martins@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210212130843.13865-1-joao.m.martins@oracle.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html 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, Feb 12, 2021 at 01:08:39PM +0000, Joao Martins wrote: > Hey, > > This series improves page unpinning, with an eye on improving MR > deregistration for big swaths of memory (which is bound by the page > unpining), particularly: Can you also take a look at the (bdev and iomap) direct I/O code to make use of this? It should really help there, with a much wieder use than RDMA.