xfs: use new extent lookup helpers xfs_file_iomap_begin_delay

commit 656152e552e5cbe0c11ad261b524376217c2fb13 upstream.

And only lookup the previous extent inside xfs_iomap_prealloc_size
if we actually need it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 file changed