kern/156978: [lagg][patch] Take lagg rlock before checking flags

[maxim at FreeBSD.org]

Synopsis: [lagg][patch] Take lagg rlock before checking flags

State-Changed-From-To: patched->closed
State-Changed-By: maxim
State-Changed-When: Wed Jul 27 07:02:47 UTC 2011
State-Changed-Why: 
Merged to RELENG_8.

http://www.freebsd.org/cgi/query-pr.cgi?pr=156978