K 10
svn:author
V 3
mjg
K 8
svn:date
V 27
2018-05-18T22:57:52.379172Z
K 7
svn:log
V 289
lockmgr: avoid atomic on unlock in the slow path

The code is pretty much guaranteed not to be able to unlock.

This is a minor nit. The code still performs way too many reads.
The altered exclusive-locked condition is supposed to be always
true as well, to be cleaned up at a later date.

END