Received: by 2002:a05:6a10:f347:0:0:0:0 with SMTP id d7csp2990502pxu; Mon, 14 Dec 2020 17:07:07 -0800 (PST) X-Google-Smtp-Source: ABdhPJw/DkK8ZL4hAfNZy5QnqdwHStMk2YgbzuqTYB11Q08ZLnyMo8p6srCh9JwbTvgeDWhguZho X-Received: by 2002:aa7:cd9a:: with SMTP id x26mr26643318edv.226.1607994427527; Mon, 14 Dec 2020 17:07:07 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1607994427; cv=none; d=google.com; s=arc-20160816; b=a6Nvomb0fkiy/MKHoYXjtcYIPlW680oVQB4hrik7Ps5eduphe4JHPAo9GK/fD+7f5I 1Ar9xlKvXiOotUQGOTgbIoNh29TyRAlAqocNrl5lcCTCVPCCDqqnmDxY1J0jc30VIjDx 54yJLvTidcj7/6pxXvo/gOKUfH1I5ib2bQZl11yBProHEgIVrK6jNZZs9/nYO2hYWWma q8oZp5qWgsrVJ4xKfLP6hmzsmFu5f1x9tGzdXpz1fK5LC9NJacXDufA4atHIHXrqXbsQ kH8rjv9Vb3GA4HWfaxFHIxmV/7L7PUJhYQySgO48wEVWpgKgMvDkRKU3ewKE4QY/RSmL H7uw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date; bh=pdFFpDCT4nVVtqcmurP5C/ppW4HrRd4R2x5g/SIJBfo=; b=rF6BV1NmijHa9E/cMkO6IpjVTgdnNalh6Oob9QlXa96yLCI0FNYdOUTE/wa5T877th AL3KWOAnl1XeZlZEsdFx4p1Kc949tuGxARXyn3aa7EPevKJtv3Mqom4/cVi2dKJIm6K2 1XoMgZ5gPrsQeyw7QcX36iO3i3NODgd8m9+F12yu4yHj7bSoXg+33Uj/i4M2PUKS4S14 G9KGjGAzx91XmBbeoIX/zZ2KJQ3QmYnyQxdAkV475YWLe2CwMFtRrpqNWoc0iJtLQZq3 suRWHnEl3ycLXRUxZPVwBbMtf5Ie1RmaFZBQ7aiTE4FzyLgnLty1lNNWZI45D1+XKztB gtsw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id jo16si104766ejb.86.2020.12.14.17.06.44; Mon, 14 Dec 2020 17:07:07 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729638AbgLOBBq (ORCPT + 99 others); Mon, 14 Dec 2020 20:01:46 -0500 Received: from mail106.syd.optusnet.com.au ([211.29.132.42]:44978 "EHLO mail106.syd.optusnet.com.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730152AbgLOBBc (ORCPT ); Mon, 14 Dec 2020 20:01:32 -0500 Received: from dread.disaster.area (pa49-179-6-140.pa.nsw.optusnet.com.au [49.179.6.140]) by mail106.syd.optusnet.com.au (Postfix) with ESMTPS id 8A91C767651; Tue, 15 Dec 2020 12:00:23 +1100 (AEDT) Received: from dave by dread.disaster.area with local (Exim 4.92.3) (envelope-from ) id 1koyhT-0043Dr-1k; Tue, 15 Dec 2020 12:00:23 +1100 Date: Tue, 15 Dec 2020 12:00:23 +1100 From: Dave Chinner To: Pavel Begunkov Cc: linux-block@vger.kernel.org, Jens Axboe , Christoph Hellwig , Matthew Wilcox , Ming Lei , Johannes Weiner , Alexander Viro , "Darrick J . Wong" , "Martin K . Petersen" , Jonathan Corbet , linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, target-devel@vger.kernel.org, linux-scsi@vger.kernel.org, linux-doc@vger.kernel.org Subject: Re: [PATCH v1 5/6] bio: add a helper calculating nr segments to alloc Message-ID: <20201215010023.GG632069@dread.disaster.area> References: <94b6f76d2d47569742ee47caede1504926f9807a.1607976425.git.asml.silence@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <94b6f76d2d47569742ee47caede1504926f9807a.1607976425.git.asml.silence@gmail.com> X-Optus-CM-Score: 0 X-Optus-CM-Analysis: v=2.3 cv=F8MpiZpN c=1 sm=1 tr=0 cx=a_idp_d a=uDU3YIYVKEaHT0eX+MXYOQ==:117 a=uDU3YIYVKEaHT0eX+MXYOQ==:17 a=kj9zAlcOel0A:10 a=zTNgK-yGK50A:10 a=7-415B0cAAAA:8 a=PygYhtxudd0edJU1dj0A:9 a=CjuIK1q_8ugA:10 a=biEYGPWJfzWAr4FL6Ov7:22 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Dec 15, 2020 at 12:20:24AM +0000, Pavel Begunkov wrote: > A preparation patch. It adds a simple helper which abstracts out number > of segments we're allocating for a bio from iov_iter_npages(). Preparation for what? bio_iov_vecs_to_alloc() doesn't seem to be used outside this specific patch, so it's not clear what it's actually needed for... Cheers, Dave. -- Dave Chinner david@fromorbit.com