mav 14c8389ad0 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.
2014-06-08 15:38:40 +00:00
..
2014-03-18 21:34:11 +00:00
MFC
2011-05-31 21:22:44 +00:00
2014-03-14 06:29:43 +00:00
2012-08-22 20:01:57 +00:00
2012-03-28 20:58:30 +00:00
2012-11-14 10:33:12 +00:00
2014-03-19 12:45:40 +00:00
2014-03-14 06:29:43 +00:00
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2014-05-01 22:28:14 +00:00
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2014-03-18 21:34:11 +00:00
2014-03-18 21:34:11 +00:00
2012-01-02 12:12:10 +00:00
2012-10-25 09:05:21 +00:00
2014-05-30 08:22:58 +00:00
MFC
2013-02-21 21:59:35 +00:00
2013-06-29 05:05:57 +00:00
2014-04-12 21:39:17 +00:00