iomap: switch iomap_file_unshare to use iomap_iter

Switch iomap_file_unshare to use iomap_iter.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
This commit is contained in:
Christoph Hellwig 2021-08-10 18:33:09 -07:00 • committed by Darrick J. Wong
commit 8fc274d1f4