Konstantin Belousov 2f9d88c7ae Protect v_rdev dereference with the vnode interlock instead of the
vnode lock.

Caller of softdep_count_dependencies() may own a buffer lock, which
might conflict with the lock order.

Reported and tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	10 days
2017-08-25 09:51:22 +00:00
..