Grab a reference to the trace vnode of the process when traversing the global process list and calling ktrsettracevnode() in ktrwrite(), so that we don't sleep in vrele(). Discussed with deraadt@, okay beck@, tedu@ and thib@.
Grab a reference to the trace vnode of the process when traversing the
global process list and calling ktrsettracevnode() in ktrwrite(), so
that we don't sleep in vrele(). Discussed with deraadt@, okay beck@,
tedu@ and thib@.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars