linux-imx

xfs: only skip rmap owner checks for unknown-owner rmap removal

For rmap removal, refactor the rmap owner checks into a separate
function, then skip the checks if we are performing an unknown-owner
removal.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>