[TRIVIAL] don't let OOM killer kill same process repeatedly

[TRIVIAL] don't let OOM killer kill same process repeatedly

Post by Rik van Rie » Mon, 24 Feb 2003 23:00:15



If a process cannot exit because it's stuck in eg. a driver, it
doesn't make sense to have the OOM killer kill it repeatedly;
that could lead to a hung system.

Instead, kill another process if the first process we tried to
kill hasn't made any move to exit within 5 seconds.  This way
we have a much better chance of recovering the system.

Note: this patch applies without offset to both 2.4 and 2.5,
since oom_kill.c hasn't changed since about 2.4.14...

please apply,

Rik
--
Engineers don't grow up, they grow sideways.
http://www.surriel.com/             http://kernelnewbies.org/

===== mm/oom_kill.c 1.11 vs edited =====
--- 1.11/mm/oom_kill.c  Fri Aug 16 10:59:46 2002

        if (!p->mm)
                return 0;
+
+       if (p->flags & PF_MEMDIE)
+               return 0;
        /*
         * The memory size of the process is the basis for the badness.
         */
-
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