K 10
svn:author
V 2
mr
K 8
svn:date
V 27
2020-07-11T13:56:36.683002Z
K 7
svn:log
V 214
Handle device removal and removal+add cases to fix infinity rate.

PR:		219829
Submitted by:	ota@j.email.ne.jp
Reported by:	rezo@live.cn
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D25226

END