Konstantin Belousov 753a007f0d Use buffer pager for NFS.
The pager, due to its construction, implements clustering for the
page-ins.  In particular, buildworld load demonstrates reduction of
the READ RPCs from 39k down to 24k.  No change in real or CPU time was
observed.

Discussed with, and measured by:	bde
No objections from:	rmacklem
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2016-11-22 10:58:24 +00:00
..
2016-11-22 10:58:24 +00:00
2016-11-22 10:58:24 +00:00