K 10
svn:author
V 7
git2svn
K 8
svn:date
V 27
2021-01-26T03:57:40.207564Z
K 7
svn:log
V 573
rctl(4): support throttling resource usage to 0

For rate-based resources that support throttling (e.g.
readiops/writeips), this fixes a divide-by-zero panic when rctl(8)
passes 0 as the throttle value.  For these resources, treat
zero-throttle requests as requests to suspend forward progress as long
as possible using the duration specified in
kern.racct.rctl.throttle_max.

PR:		251803
Reported by:	chris@cretaforce.gr

(cherry picked from commit e8a5a1ad7154dc34e3a5234267e19faa86d5ff33)

Git Hash:   70cdab054c8ffe7f5561ab8f31db33ee62d12c9c
Git Author: jah@FreeBSD.org
END