K 10
svn:author
V 5
markj
K 8
svn:date
V 27
2015-06-07T18:59:47.404487Z
K 7
svn:log
V 498
witness: don't warn about matrix inconsistencies without holding the mutex

Lock order checking is done without the witness mutex held, so multiple
threads that are racing to establish a new lock order may read matrix
entries that are in an inconsistent state. Don't print a warning in this
case, but instead just redo the check after taking the witness lock.

Differential Revision:	https://reviews.freebsd.org/D2713
Reviewed by:	jhb
MFC after:	2 weeks
Sponsored by:	EMC / Isilon Storage Division

END