[RFC][PATCH 0/5] mem notifications v4

[KOSAKI Motohiro]

Hi!

The /dev/mem_notify is low memory notification device.
it can avoid swappness and oom by cooperationg with the user process.

You need not be annoyed by OOM any longer :)
please any comments!


related discussion:
--------------------------------------------------------------
  LKML OOM notifications requirement discussion
     http://www.gossamer-threads.com/lists/linux/kernel/832802?nohighlight=1#832802
  OOM notifications patch [Marcelo Tosatti]
     http://marc.info/?l=linux-kernel&m=119273914027743&w=2
  mem notifications v3 [Marcelo Tosatti]
     http://marc.info/?l=linux-mm&m=119852828327044&w=2
  Thrashing notification patch  [Daniel Spang]
     http://marc.info/?l=linux-mm&m=119427416315676&w=2


Changelog
-------------------------------------------------
  v3 -> v4 (by KOSAKI Motohiro)
    o rebase to 2.6.24-rc6-mm1
    o avoid wake up all.
    o add judgement point to __free_one_page().
    o add zone awareness.

  v2 -> v3 (by Marcelo Tosatti)
    o changes the notification point to happen whenever
      the VM moves an anonymous page to the inactive list.
    o implement notification rate limit.

  v1(oom notify) -> v2 (by Marcelo Tosatti)
    o name change
    o notify timing change from just swap thrashing to
      just before thrashing.
    o also works with swapless device.




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