K 10
svn:author
V 5
markj
K 8
svn:date
V 27
2018-06-01T23:49:32.294183Z
K 7
svn:log
V 430
Avoid completing I/O when dumping core after a panic.

Filesystem or pager completion callbacks are generally non-functional
after a panic and may trigger deadlocks if invoked in this context
(e.g., by attempting to destroying a buffer mapping).  To avoid this
situation, short-circuit I/O completion in biodone().

Reviewed by:	imp
Discussed with:	mav
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D15592

END