K 10
svn:author
V 3
mav
K 8
svn:date
V 27
2014-06-08T15:38:40.172756Z
K 7
svn:log
V 314
Use atomics to modify numvnodes variable.

This allows to mostly avoid lock usage in getnewvnode_[drop_]reserve(),
that reduces number of global vnode_free_list_mtx mutex acquisitions
from 4 to 2 per NFS request on ZFS, improving SMP scalability.

Reviewed by:	kib
MFC after:	2 weeks
Sponsored by:	iXsystems, Inc.

END