On Thu, 5 Mar 2009, Guido Ostkamp wrote:
Would this work or is there a special reason why the original check was done
with lock held?
http://en.wikipedia.org/wiki/Race_condition
Until you have a lock on a buffer header, you can't trust that you're even
seeing consistent information about it.
Guido Ostkamp writes:
> Would this work or is there a special reason why the original check was
> done with lock held?
This will fail, very nastily, on multiple-CPU machines with weak memory
ordering guarantees. You can't assume you are seeing an up-to-date
value of the flag bit if you don't ta
Hello,
Bruce Momjian is with us for some training sessions this week and has
asked me to post the following question to the mailing list (I have chosen
this list as it was suggested not to post directly to hackers list):
When looking at function BufferSync() in
postgresql/src/backend/storage
