vm_page: rename page with pctrie_transfer
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Authored by dougm on May 7 2025, 2:55 AM.

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Summary

The method for renaming a page - giving it a new index in a different object - involves trickery that briefly has the same page in two objects at once. To avoid this, define a pctrie_transfer method for moving an item from one pctrie to another without such trickery.

This depends on changes under review in D46895.