PostgreSQL 9.3 beta: Federated databases and more
PostgreSQL 9.3 beta: Federated databases and more
Posted May 16, 2013 0:08 UTC (Thu) by Cyberax (✭ supporter ✭, #52523)In reply to: PostgreSQL 9.3 beta: Federated databases and more by andresfreund
Parent article: PostgreSQL 9.3 beta: Federated databases and more
Can you write() directly from mmaped pages?
Posted May 16, 2013 0:14 UTC (Thu)
by andresfreund (subscriber, #69562)
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I think I am not following where you are going with this?
PostgreSQL 9.3 beta: Federated databases and more
> Can you write() directly from mmaped pages?
Afair there are no checks made against it, so yes. But what would be the point? You need to modify the page first, which makes the write superflous? It doesn't prevent the kernel from writing out the page too early either.