Mateusz Guzik 752fc07d33 vfs: implement v_holdcnt/v_usecount manipulation using atomic ops
Transitions 0->1 and 1->0 (which decide e.g. on putting the vnode on the free
list) of either counter are still guarded with vnode interlock.

Reviewed by:	kib (earlier version)
Tested by:	pho
2015-07-16 13:57:05 +00:00
..