Re: page migration patchset

[Robin Holt]

On Tue, Jan 11, 2005 at 09:38:02AM -0600, Ray Bryant wrote:
> Pages that are found to be swapped out would be handled as follows:
> Add the original node id to either the swap pte or the swp_entry_t.
> Swap in will be modified to allocate the page on the same node it
> came from.  Then, as part of migrate_process_pages, all that would
> be done for swapped out pages would be to change the "original node"
> field to point at the new node.
> 
> However, I could probably do both steps (2) and (3) as part of the
> migrate_process_pages() call.

I don't think we need to worry about the swap case.  Let's keep the
changes small and build when we see problems.  The normal swap
out/in mechanism should handle nearly all the page migration issues
you are concerned with.

Just my 2 cents,
Robin
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