RE: [HACKERS] Concurrent-update problem in bufmgr.c

[Mikheev, Vadim]

> I believe the correct fix for this problem is for bufmgr.c to grab
> a read lock (BUFFER_LOCK_SHARED) on any page that it is writing out.
> A read lock is sufficient since there's no need to prevent other
> backends from reading the page, we just need to prevent them from
> changing it during the I/O.
> 
> Comments anyone?

Do it.

Vadim