K 10
svn:author
V 6
rlibby
K 8
svn:date
V 27
2019-11-25T07:38:27.328810Z
K 7
svn:log
V 376
sysctl sysctls: wire old buf before output with sysctl lock

Several sysctl sysctls output to a user buffer while holding a
non-sleepable lock that protects the sysctl topology.  They need to wire
the output buffer, or else they may try to sleep on a page fault.

Reviewed by:	cem, markj
Sponsored by:	Dell EMC Isilon
Differential Revision:	https://reviews.freebsd.org/D22528

END