• NeilBrown's avatar
    md/raid10: Introduce 'prev' geometry to support reshape. · f8c9e74f
    NeilBrown authored
    When RAID10 supports reshape it will need a 'previous' and a 'current'
    geometry, so introduce that here.
    Use the 'prev' geometry when before the reshape_position, and the
    current 'geo' when beyond it.  At other times, use both as
    For now, both are identical (And reshape_position is never set).
    When we use the 'prev' geometry, we must use the old data_offset.
    When we use the current (And a reshape is happening) we must use
    the new_data_offset.
    Signed-off-by: default avatarNeilBrown <neilb@suse.de>
raid10.h 4.19 KB