2. Ensure that writeback is complete.
3. Lock the new page that we want to move to. It is locked so that accesses to
- this (not yet uptodate) page immediately block while the move is in progress.
+ this (not yet up-to-date) page immediately block while the move is in progress.
4. All the page table references to the page are converted to migration
entries. This decreases the mapcount of a page. If the resulting