The lookup_first_ordered_extent() was done on the wrong inode, and the
->delalloc_bytes test was wrong, as the following
btrfs_wait_ordered_range() would only invoke a range write and wouldn't
write the entire file data range. Also, a bad parameter was passed to
btrfs_wait_ordered_range().
Signed-off-by: NYehuda Sadeh <yehuda@hq.newdream.net>
Signed-off-by: NChris Mason <chris.mason@oracle.com>