We no longer need to have this function return the previous next
agino value from the on-disk inode as we have it in the in-core
inode now.
Signed-off-by: NDave Chinner <dchinner@redhat.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NDarrick J. Wong <djwong@kernel.org>