iomap: mark ->iomap_end as optional
authorChristoph Hellwig <hch@lst.de>
Tue, 16 Aug 2016 22:42:34 +0000 (08:42 +1000)
committerDave Chinner <david@fromorbit.com>
Tue, 16 Aug 2016 22:42:34 +0000 (08:42 +1000)
commitf20ac7ab17fcf7046bd9bc4166faf9580f713afd
tree0a68e726fcd62b260a1ae12ec783d02584e04d1f
parentac2dc058bce81b83631ad5accb90b8f4abe613b7
iomap: mark ->iomap_end as optional

No need to implement it for read-only mappings.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
fs/iomap.c