RE: Silent deadlock possible in current sources

> I'm inclined to think that that is the correct solution and the new
> approach is simply broken.  But, not knowing what Vadim had in mind
> while making this change, I'm going to leave it to him to fix this.

Thanks, Tom! I'll take care about this...

> Although this specific lockup mode didn't exist in 7.0.*, it does
> suggest a possible cause of the deadlocks-with-no-deadlock-report
> behavior that a couple of people have reported with 7.0: maybe there
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> is another logic path that allows a deadlock involving two 
> buffer locks, or a buffer lock and a normal lock.  I'm on the
> warpath now ...

Buffer locks were implemented in 6.5.

Vadim