[mmotm 0521][PATCH 0/12] various OOM fixes for 2.6.35

[KOSAKI Motohiro]

Hi

This patch series is collection of various OOM bugfixes. I think
all of patches can send to 2.6.35.
Recently, David Rientjes and Luis Claudio R. Goncalves posted other
various imporovement. I'll collect such 2.6.36 items and I plan to 
push -mm at next week.

patch lists
-------------------------------------
oom: select_bad_process: check PF_KTHREAD instead of !mm to skip kthreads
oom: introduce find_lock_task_mm() to fix !mm false positives
oom: the points calculation of child processes must use find_lock_task_mm() too
oom: __oom_kill_task() must use find_lock_task_mm() too
oom: make oom_unkillable() helper function
oom: remove warning for in mm-less task __oom_kill_process()
oom: Fix child process iteration properly
oom: dump_tasks() use find_lock_task_mm() too
oom: remove PF_EXITING check completely
oom: sacrifice child with highest badness score for parent
oom: remove special handling for pagefault ooms
oom: give current access to memory reserves if it has been killed

diffstat
------------
 mm/oom_kill.c |  303 ++++++++++++++++++++++++++++++--------------------------
 1 files changed, 162 insertions(+), 141 deletions(-)



Changes since last post
-------------------------
  - Drop Luis's "give the dying task a higher priority" patch
  - Add "remove PF_EXITING check completely" patch
  - Drop Oleg's "oom: select_bad_process: PF_EXITING check should 
    take ->mm into account" because conflict against "remove 
    PF_EXITING check completely"
  - Add "oom: sacrifice child with highest badness score for parent"
  - Add "oom: remove special handling for pagefault ooms"
  - Add "oom: give current access to memory reserves if it has been killed"




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