On Tue, 2 May 2006, Tom Lane wrote:
Heikki Linnakangas <[EMAIL PROTECTED]> writes:
On Tue, 2 May 2006, Tom Lane wrote:
Backwards scan may break this whole concept; are you sure you've thought
it through?
I think so. The patch doesn't change the walk-left code. Do you have
something specific in mind?
I'm worried about synchronization, particularly what happens if the page
gets deleted from under you while you don't have it pinned.
AFAICS, shouldn't happen. The half-dead system makes sure that a page
won't get deleted while a scan might still be interested in it. It
doesn't depend on pins.
- Heikki
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