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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 1A03CECAAD5 for ; Mon, 5 Sep 2022 17:07:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Y4/jKaf/eLcqZPk6lC+3R154Ru296Ee+lt5Q6AOm3dE=; b=V6uyUXbXv5SloqGMke3Qm/PkIe Yr8H1gESj7Kvg2lXNFluMzu3RpLsF7L9ohKy3se/kQapYdAdcoxx5mJiZzN9WTyQi7Un+Y+e4Z+LC yRMaVHZh0Hqc51ZAv97nU9PQdjG3F0VOE03msnbbBZwQ7rCKPKdOKrxRTJUSz5teh3eGTF53NhQnJ uYUuLyl44y6oeQA0gG3fwZXg+VFpgK89m0JaTDAEIxW5/yidgv2jjXtYR9Pikh3+D08I4hkdXnCdt kM8G/3wnIv3BfjBSDsti/SXOc5CVOseS/rfAvHecu05G1WX1u3Xxt0sI30A3+OEF1+JiYd5AmHWvf Q5Jg1ssA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oVFZR-007Gat-GJ; Mon, 05 Sep 2022 17:07:38 +0000 Received: from verein.lst.de ([213.95.11.211]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oVDAn-004VZI-3r for linux-nvme@lists.infradead.org; Mon, 05 Sep 2022 14:34:29 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id 3D5E668AA6; Mon, 5 Sep 2022 16:33:51 +0200 (CEST) Date: Mon, 5 Sep 2022 16:33:51 +0200 From: Christoph Hellwig To: Logan Gunthorpe Cc: linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org, linux-pci@vger.kernel.org, linux-mm@kvack.org, Christoph Hellwig , Greg Kroah-Hartman , Dan Williams , Jason Gunthorpe , Christian =?iso-8859-1?Q?K=F6nig?= , John Hubbard , Don Dutile , Matthew Wilcox , Daniel Vetter , Minturn Dave B , Jason Ekstrand , Dave Hansen , Xiong Jianxin , Bjorn Helgaas , Ira Weiny , Robin Murphy , Martin Oliveira , Chaitanya Kulkarni , Ralph Campbell , Stephen Bates Subject: Re: [PATCH v9 2/8] iov_iter: introduce iov_iter_get_pages_[alloc_]flags() Message-ID: <20220905143351.GA5813@lst.de> References: <20220825152425.6296-1-logang@deltatee.com> <20220825152425.6296-3-logang@deltatee.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220825152425.6296-3-logang@deltatee.com> User-Agent: Mutt/1.5.17 (2007-11-01) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220905_073426_520882_CB042F89 X-CRM114-Status: GOOD ( 12.58 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org On Thu, Aug 25, 2022 at 09:24:19AM -0600, Logan Gunthorpe wrote: > Add iov_iter_get_pages_flags() and iov_iter_get_pages_alloc_flags() > which take a flags argument that is passed to get_user_pages_fast(). > > This is so that FOLL_PCI_P2PDMA can be passed when appropriate. Any reason why iov_iter_get_pages2 doesn't call iov_iter_get_pages_flags and same for the __alloc version? Also with the "main" version now having the 2 postfix, we can just use the iov_iter_get_pages name for the flags version, and maybe eventually just convert all users over to it.