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Date:   Thu, 15 Nov 2018 13:42:52 +0100
From:   David Sterba <dsterba@suse.cz>
To:     Ming Lei <ming.lei@redhat.com>
Cc:     Jens Axboe <axboe@kernel.dk>, linux-block@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        Dave Chinner <dchinner@redhat.com>,
        Kent Overstreet <kent.overstreet@gmail.com>,
        linux-fsdevel@vger.kernel.org,
        Alexander Viro <viro@zeniv.linux.org.uk>,
        Shaohua Li <shli@kernel.org>, linux-raid@vger.kernel.org,
        linux-erofs@lists.ozlabs.org, linux-btrfs@vger.kernel.org,
        David Sterba <dsterba@suse.com>,
        "Darrick J . Wong" <darrick.wong@oracle.com>,
        Gao Xiang <gaoxiang25@huawei.com>,
        Christoph Hellwig <hch@lst.de>, Theodore Ts'o <tytso@mit.edu>,
        linux-ext4@vger.kernel.org, Coly Li <colyli@suse.de>,
        linux-bcache@vger.kernel.org, Boaz Harrosh <ooo@electrozaur.com>,
        Bob Peterson <rpeterso@redhat.com>, cluster-devel@redhat.com
Subject: Re: [PATCH V10 12/19] block: allow bio_for_each_segment_all() to
 iterate over multi-page bvec
Message-ID: <20181115124252.GP24115@twin.jikos.cz>
Reply-To: dsterba@suse.cz
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        Jens Axboe <axboe@kernel.dk>, linux-block@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        Dave Chinner <dchinner@redhat.com>,
        Kent Overstreet <kent.overstreet@gmail.com>,
        linux-fsdevel@vger.kernel.org,
        Alexander Viro <viro@zeniv.linux.org.uk>,
        Shaohua Li <shli@kernel.org>, linux-raid@vger.kernel.org,
        linux-erofs@lists.ozlabs.org, linux-btrfs@vger.kernel.org,
        David Sterba <dsterba@suse.com>,
        "Darrick J . Wong" <darrick.wong@oracle.com>,
        Gao Xiang <gaoxiang25@huawei.com>, Christoph Hellwig <hch@lst.de>,
        Theodore Ts'o <tytso@mit.edu>, linux-ext4@vger.kernel.org,
        Coly Li <colyli@suse.de>, linux-bcache@vger.kernel.org,
        Boaz Harrosh <ooo@electrozaur.com>,
        Bob Peterson <rpeterso@redhat.com>, cluster-devel@redhat.com
References: <20181115085306.9910-1-ming.lei@redhat.com>
 <20181115085306.9910-13-ming.lei@redhat.com>
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On Thu, Nov 15, 2018 at 04:52:59PM +0800, Ming Lei wrote:
> diff --git a/block/blk-zoned.c b/block/blk-zoned.c
> index 13ba2011a306..789b09ae402a 100644
> --- a/block/blk-zoned.c
> +++ b/block/blk-zoned.c
> @@ -123,6 +123,7 @@ static int blk_report_zones(struct gendisk *disk, sector_t sector,
>  	unsigned int z = 0, n, nrz = *nr_zones;
>  	sector_t capacity = get_capacity(disk);
>  	int ret;
> +	struct bvec_iter_all iter_all;
>  
>  	while (z < nrz && sector < capacity) {
>  		n = nrz - z;

iter_all is added but not used and I don't see any
bio_for_each_segment_all for conversion in this function.