fix integer overflow bugs in *stosbt
68f57679d660 Fixed another class of integer overflows, but introduced a
boundary condition for 2-4s in ns conversion, 2-~4000s in us conversions
and 2-~4,000,000s in ms conversions. This was because we bogusly used
SBT_1S for the notion of 1 second, instead of the appropriate power of
- To fix, just use the appropriate power of 10, which avoids these
overflows.
This caused some sleeps in ZFS to be on the order of an hour.
MFC: 1 day
PR: 263073
Sponsored by: Netflix
Reviewed by: asomers
Differential Revision: https://reviews.freebsd.org/D34790