[patch] POSIX advisory mode lock panic fix by Dfly

[Devon H. O'Dell]

Hey all,

I've ported my patch for the local kernel panic that I fixed in a patch 
for FreeBSD over to DragonflyBSD as well. It's available at 
http://sitetronics.com/lockfix.dfly.tar.gz. I'd appreciate feedback for 
this .

Please note that this is pretty much a literal copy of the patch I made 
for FreeBSD. It hasn't been thoroughly reviewed by that crowd, so it's 
probably not a bad idea for you guys to do that too .

Let me know if anything needs to change.

Kind regards,

Devon H. O'Dell