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Date: Tue, 15 Mar 2016 00:33:59 -0700
From: Christoph Hellwig <hch@infradead.org>
To: Bob Peterson <rpeterso@redhat.com>
Cc: linux-fsdevel@vger.kernel.org, Jan Kara <jack@suse.cz>,
	Al Viro <viro@ZenIV.linux.org.uk>,
	Dave Chinner <david@fromorbit.com>,
	Christoph Hellwig <hch@infradead.org>
Subject: Re: [vfs PATCH v3 4/4] GFS2: Use new iomap interface for fiemap
Message-ID: <20160315073359.GG11669@infradead.org>
References: <1457122300-28514-1-git-send-email-rpeterso@redhat.com>
 <1457122300-28514-5-git-send-email-rpeterso@redhat.com>
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> -		ret = __generic_block_fiemap(inode, fieinfo, start, len,
> -					     gfs2_block_map);
> +		ret = __generic_iomap_fiemap(inode, fieinfo, start, len,
> +					     gfs2_get_iomap);

So it seems like the generic_iomap_fiemap you added is unused,
no need to add it then.