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=-2.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 20931C43331 for ; Tue, 12 Nov 2019 21:15:02 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id CC56F21925 for ; Tue, 12 Nov 2019 21:15:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="M+zD7DiT" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CC56F21925 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nvidia.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 709736B0003; Tue, 12 Nov 2019 16:15:01 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 6E1A96B0005; Tue, 12 Nov 2019 16:15:01 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 5F8416B0006; Tue, 12 Nov 2019 16:15:01 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0060.hostedemail.com [216.40.44.60]) by kanga.kvack.org (Postfix) with ESMTP id 4B71E6B0003 for ; Tue, 12 Nov 2019 16:15:01 -0500 (EST) Received: from smtpin18.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with SMTP id E552F8249980 for ; Tue, 12 Nov 2019 21:15:00 +0000 (UTC) X-FDA: 76148880360.18.rod51_2bb6c23b7420f X-HE-Tag: rod51_2bb6c23b7420f X-Filterd-Recvd-Size: 5223 Received: from hqemgate14.nvidia.com (hqemgate14.nvidia.com [216.228.121.143]) by imf30.hostedemail.com (Postfix) with ESMTP for ; Tue, 12 Nov 2019 21:15:00 +0000 (UTC) Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate14.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Tue, 12 Nov 2019 13:15:01 -0800 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Tue, 12 Nov 2019 13:14:58 -0800 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Tue, 12 Nov 2019 13:14:58 -0800 Received: from [10.110.48.28] (10.124.1.5) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Tue, 12 Nov 2019 21:14:57 +0000 Subject: Re: [PATCH v3 11/23] IB/{core,hw,umem}: set FOLL_PIN, FOLL_LONGTERM via pin_longterm_pages*() To: Jason Gunthorpe CC: Andrew Morton , Al Viro , Alex Williamson , Benjamin Herrenschmidt , =?UTF-8?B?QmrDtnJuIFTDtnBlbA==?= , Christoph Hellwig , Dan Williams , Daniel Vetter , Dave Chinner , David Airlie , "David S . Miller" , Ira Weiny , Jan Kara , Jens Axboe , Jonathan Corbet , =?UTF-8?B?SsOpcsO0bWUgR2xpc3Nl?= , Magnus Karlsson , Mauro Carvalho Chehab , Michael Ellerman , Michal Hocko , Mike Kravetz , Paul Mackerras , Shuah Khan , Vlastimil Babka , , , , , , , , , , , , , LKML References: <20191112000700.3455038-1-jhubbard@nvidia.com> <20191112000700.3455038-12-jhubbard@nvidia.com> <20191112204449.GF5584@ziepe.ca> From: John Hubbard X-Nvconfidentiality: public Message-ID: <3513d317-8e29-006f-1624-e9aa94ce9ad5@nvidia.com> Date: Tue, 12 Nov 2019 13:14:57 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20191112204449.GF5584@ziepe.ca> X-Originating-IP: [10.124.1.5] X-ClientProxiedBy: HQMAIL101.nvidia.com (172.20.187.10) To HQMAIL107.nvidia.com (172.20.187.13) Content-Type: text/plain; charset="utf-8" Content-Language: en-US Content-Transfer-Encoding: 7bit DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1573593301; bh=IA5cc3Ug8y/Soy37I3lcgnCK4KJuS9HA5F969hpkGDk=; h=X-PGP-Universal:Subject:To:CC:References:From:X-Nvconfidentiality: Message-ID:Date:User-Agent:MIME-Version:In-Reply-To: X-Originating-IP:X-ClientProxiedBy:Content-Type:Content-Language: Content-Transfer-Encoding; b=M+zD7DiTvJEHWyZUscBaWsNyvdd7nW2Z8MINjy6zlNtzbk8yDqUSKZUYoDkjLfsT1 jhJdgaW8sOVEVYkkTrDIJJa4fwOit67TvUa2zybzBPmS46CYVBpq/47LCJQvGX/3++ kN6TX/8r3rAiSK8yfXz19Ap8X1CeF0WYNvVBYngtzVePIwXr6m7SCdxfr4dOboh5Y+ 2hlHGc9hiYvLqwfEFqtP6wQ0eViLmw5Mlq+PhJcVMOubS+xNo9DKWwkDLrS4gEKUIZ bPZcwVTnmn5+kG5LhprB02X6C6BdeIO1M4uKbavcouV5mwBgzW09isv1UnQ87weLii Kt8d5q/apbk1g== 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 11/12/19 12:44 PM, Jason Gunthorpe wrote: > On Mon, Nov 11, 2019 at 04:06:48PM -0800, John Hubbard wrote: >> @@ -542,7 +541,7 @@ static int ib_umem_odp_map_dma_single_page( >> } >> >> out: >> - put_user_page(page); >> + put_page(page); >> >> if (remove_existing_mapping) { >> ib_umem_notifier_start_account(umem_odp); >> @@ -639,13 +638,14 @@ int ib_umem_odp_map_dma_pages(struct ib_umem_odp *umem_odp, u64 user_virt, >> /* >> * Note: this might result in redundent page getting. We can >> * avoid this by checking dma_list to be 0 before calling >> - * get_user_pages. However, this make the code much more >> - * complex (and doesn't gain us much performance in most use >> - * cases). >> + * get_user_pages. However, this makes the code much >> + * more complex (and doesn't gain us much performance in most >> + * use cases). >> */ >> npages = get_user_pages_remote(owning_process, owning_mm, >> - user_virt, gup_num_pages, >> - flags, local_page_list, NULL, NULL); >> + user_virt, gup_num_pages, >> + flags, local_page_list, NULL, >> + NULL); >> up_read(&owning_mm->mmap_sem); > > This is just whitespace churn? Drop it.. > Whoops, yes. It got there because of going through the pin*() conversion and then a revert, and now it's just whitespace. I'll drop it, thanks for catching that. thanks, John Hubbard NVIDIA