[PATCH *] reverse mapping VM 7

From: Rik van Riel (riel@conectiva.com.br)
Date: Fri Dec 21 2001 - 01:39:46 EST

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NOTE: this patch is completely untested, except for verifying that
it compiles ... but what do you want at 04:30 ? ;)

The 7th version of the reverse mapping based VM is now available.
This is an attempt at making a more robust and flexible VM
subsystem, while cleaning up a lot of code at the time. The patch
is available from:

http://surriel.com/patches/2.4/2.4.16-rmap-7
and http://linuxvm.bkbits.net/

The big TODO items for the _next_ release are:
  - fix page_launder() so it doesn't submit the whole
    inactive_dirty list for writeout in one go
  - tune the balancing, under some strange loads I seem
    to be able to trigger a livelock

rmap 7:
  - clean up and document vmscan.c (me)
  - reduce size of page struct, part one (William Lee Irwin)
  - add rmap.h for other archs (untested, not for ARM) (me)
rmap 6:
  - make the active and inactive_dirty list per zone,
    this is finally possible because we can free pages
    based on their physical address (William Lee Irwin)
  - cleaned up William's code a bit (me)
  - turn some defines into inlines and move those to
    mm_inline.h (the includes are a mess ...) (me)
  - improve the VM balancing a bit (me)
  - add back inactive_target to /proc/meminfo (me)
rmap 5:
  - fixed recursive buglet, introduced by directly
    editing the patch for making rmap 4 ;))) (me)
rmap 4:
  - look at the referenced bits in page tables (me)
rmap 3:
  - forgot one FASTCALL definition (me)
rmap 2:
  - teach try_to_unmap_one() about mremap() (me)
  - don't assign swap space to pages with buffers (me)
  - make the rmap.c functions FASTCALL / inline (me)
rmap 1:
  - fix the swap leak in rmap 0 (Dave McCracken)
rmap 0:
  - port of reverse mapping VM to 2.4.16 (me)

cheers,

Rik

-- Shortwave goes a long way: irc.starchat.net #swl

http://www.surriel.com/ http://distro.conectiva.com/

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