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From: Konstantin Belousov <kib@FreeBSD.org>
Date: Tue, 6 Apr 2010 10:43:01 +0000 (UTC)
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Subject: cvs commit: src/sys/kern kern_sig.c src/sys/sys proc.h src/sys/vm
 vm_fault.c vm_pageout.c
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kib         2010-04-06 10:43:01 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             kern_sig.c 
    sys/sys              proc.h 
    sys/vm               vm_fault.c vm_pageout.c 
  Log:
  SVN rev 206264 on 2010-04-06 10:43:01Z by kib
  
  When OOM searches for a process to kill, ignore the processes already
  killed by OOM. When killed process waits for a page allocation, try to
  satisfy the request as fast as possible.
  
  This removes the often encountered deadlock, where OOM continously
  selects the same victim process, that sleeps uninterruptibly waiting
  for a page. The killed process may still sleep if page cannot be
  obtained immediately, but testing has shown that system has much
  higher chance to survive in OOM situation with the patch.
  
  In collaboration with:  pho
  Reviewed by:    alc
  MFC after:      4 weeks
  
  Revision  Changes    Path
  1.388     +1 -0      src/sys/kern/kern_sig.c
  1.545     +2 -1      src/sys/sys/proc.h
  1.266     +15 -6     src/sys/vm/vm_fault.c
  1.310     +2 -2      src/sys/vm/vm_pageout.c