K 10
svn:author
V 3
mjg
K 8
svn:date
V 27
2016-12-31T12:06:27.168263Z
K 7
svn:log
V 366
MFC r309893,r309929:

    vfs: add vrefact, to be used when the vnode has to be already active

    This allows blind increment of relevant counters which under contention
    is cheaper than inc-not-zero loops at least on amd64.

    Use it in some of the places which are guaranteed to see already active
    vnodes.

==

    vfs: use vrefact in getcwd and fchdir

END