K 10
svn:author
V 3
mav
K 8
svn:date
V 27
2019-11-21T21:59:35.383961Z
K 7
svn:log
V 157
Add variant of root_mount_hold() without allocation.

It allows to use this KPI in non-sleepable contexts.

MFC after:	2 weeks
Sponsored by:	iXsystems, Inc.

END