Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1752379AbdHJLaH (ORCPT <rfc822;w@1wt.eu>);
        Thu, 10 Aug 2017 07:30:07 -0400
Received: from bombadil.infradead.org ([65.50.211.133]:37898 "EHLO
        bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1751455AbdHJLaF (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Thu, 10 Aug 2017 07:30:05 -0400
Date: Thu, 10 Aug 2017 04:29:59 -0700
From: Christoph Hellwig <hch@infradead.org>
To: Ming Lei <ming.lei@redhat.com>
Cc: Jens Axboe <axboe@fb.com>, Christoph Hellwig <hch@infradead.org>,
        Huang Ying <ying.huang@intel.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Alexander Viro <viro@zeniv.linux.org.uk>, linux-kernel@vger.kernel.org,
        linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        linux-mm@kvack.org, Chris Mason <clm@fb.com>,
        Josef Bacik <jbacik@fb.com>, David Sterba <dsterba@suse.com>,
        linux-btrfs@vger.kernel.org
Subject: Re: [PATCH v3 11/49] btrfs: avoid access to .bi_vcnt directly
Message-ID: <20170810112959.GG20308@infradead.org>
References: <20170808084548.18963-1-ming.lei@redhat.com>
 <20170808084548.18963-12-ming.lei@redhat.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20170808084548.18963-12-ming.lei@redhat.com>
User-Agent: Mutt/1.8.3 (2017-05-23)
X-SRS-Rewrite: SMTP reverse-path rewritten from <hch@infradead.org> by bombadil.infradead.org. See http://www.infradead.org/rpr.html
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 255
Lines: 14

> +static unsigned int get_bio_pages(struct bio *bio)
> +{
> +	unsigned i;
> +	struct bio_vec *bv;
> +
> +	bio_for_each_segment_all(bv, bio, i)
> +		;
> +
> +	return i;
> +}

s/get_bio_pages/bio_nr_pages/ ?

Also this seems like a useful helper for bio.h