K 10
svn:author
V 3
imp
K 8
svn:date
V 27
2019-06-01T15:37:44.303294Z
K 7
svn:log
V 364
Since a fatal trap can happen at aribtrary times, don't panic when the
completions are not in a consistent state. Cope with the different
places the normal I/O completion polling thread can be interrupted and
then re-entered during a kernel panic + dump.

Reviewed by: jhb and markj (both prior versions)
Differential Revision:  https://reviews.freebsd.org/D20478

END