Here is my next try.

Version 0.2, 2nd of April 2004:
- Efforts made to make it less architecture dependent
- Two big loops of PGD-PMD-PTE scans merged at the expense of
  some "if-then-else"-es and some additional function parameters
- Permission check added
- Excessive DEBUG stuff removed
- Some cosmetics

You can find a description in "Documentation/migrate.txt".

I keep on using a single system call in order not too pollute much...
Until I have an official system call number I just picked up:

	__NR_page_migrate 1276

I was thinking about reading out statistics via "/proc". Well I do not like
converting numbers to strings and making the user program convert them back...
In addition we may have up to 256 nodes, up to 256 * 256 migration counters -
the result is not much readable.

Notes about the data security:
- The process controlling the migration cannot read nor modify the data of the
  victim process.
- The data of the victim process cannot be broken. Should the migration fail,
  a data page will be found intact, in a single example, either on the source
  or the destination NUMA node.
- He who can kill you is allowed to migrate your pages.

The patch is against:        patch-2.6.4.-bk4

TODO: check to see if pulling in pages in to a node is better than pushing them out

Your remarks will be appreciated.

Zoltán Menyhárt


P.S: is the list linux-mm@kvack.org alive ?