On Tue, 2 May 2006, Tom Lane wrote:

Agreed. The pin has two functions:
- keep the page from being moved out of the bufmgr - no need anymore
- stop a vacuum from removing the page - no need anymore. We'll not stop
on a removable row anymore, so no need.

At the moment, backward scan returns to the page to walk left from there.

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?

- Heikki

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