K 10
svn:author
V 3
mjg
K 8
svn:date
V 27
2017-11-17T02:25:04.020386Z
K 7
svn:log
V 238
mtx: unlock before traversing threads to wake up

This shortens the lock hold time while not affecting corretness.
All the woken up threads end up competing can lose the race against
a completely unrelated thread getting the lock anyway.

END