K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2010-01-17T21:24:27.563605Z
K 7
svn:log
V 232
Add new function vunref(9) that decrements vnode use count (and hold
count) while vnode is exclusively locked.

The code for vput(9), vrele(9) and vunref(9) is merged.

In collaboration with:	pho
Reviewed by:	alc
MFC after:	3 weeks

END