tree 4c9232f769b3fda758633add5d4ee5f559cf98a5
parent 088b70526d5b4080010147e4a6ae1252c3fc2228
author Lars Ellenberg <lars.ellenberg@linbit.com> 1427399635 +0100
committer Jens Axboe <axboe@fb.com> 1448468522 -0700

drbd: make drbd known to lsblk: use bd_link_disk_holder

lsblk should be able to pick up stacking device driver relations
involving DRBD conveniently.

Even though upstream kernel since 2011 says
	"DON'T USE THIS UNLESS YOU'RE ALREADY USING IT."
a new user has been added since (bcache),
which sets the precedences for us to use it as well.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@fb.com>