tree 31383b73c6d471dc8620b0bda044d5d514fd1d8b
parent 1a0fd497733bd029a7d5f2e5c69b1dff715b7792
author Neil Brown <neilb@notabene.brown> 1214605889 +1000
committer Neil Brown <neilb@notabene.brown> 1214605889 +1000

Enable setting of 'offset' and 'size' of a hot-added spare.

offset_store and rdev_size_store allow control of the region of a
device which is to be using in an md/raid array.
They only allow these values to be set when an array is being assembled,
as changing them on an active array could be dangerous.
However when adding a spare device to an array, we might need to
set the offset and size before starting recovery.  So allow
these values to be set also if "->raid_disk < 0" which indicates that
the device is still a spare.

Signed-off-by: Neil Brown <neilb@suse.de>