K 10
svn:author
V 3
smh
K 8
svn:date
V 27
2016-06-29T07:55:45.068142Z
K 7
svn:log
V 504
Allow ZFS ARC min / max to be tuned at runtime

Prior to this change ZFS ARC min / max could only be changed using
boot time tunables, this allows the values to be tuned at runtime
using the sysctls:
* vfs.zfs.arc_max
* vfs.zfs.arc_min

When adjusting ZFS ARC minimum the memory used  will only reduce
to the new minimum given memory pressure.

Reviewed by:	allanjude
Approved by:	re (gjb)
MFC after:	2 weeks
Relnotes:	yes
Sponsored by:	Multiplay
Differential Revision:	https://reviews.freebsd.org/D5907

END