Messages in this thread | | | Date | Tue, 5 Jun 2007 16:01:49 -0700 | From | Paul Jackson <> | Subject | Re: [patch] cpusets: do not allow TIF_MEMDIE tasks to allocate globally |
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> OOM-killed tasks, marked as TIF_MEMDIE, should not be able to access > memory outside its cpuset because it could potentially cause other > exclusive cpusets to OOM themselves.
I'm a little surprised at this suggested change -- I'd have thought that it was a good idea to let tasks marked for extinction get memory anywhere, as they were going to use that memory to exit, and free up lots more memory.
I'm pretty sure we have this same policy in other places in the kernel, besides cpusets. Did you intend to change them too?
If a MEMDIE task is taking enough memory to OOM other tasks anywhere in the system, then doesn't that mean your entire system was in deep yogurt, and we're just haggling over who to blame for the upcoming crash?
-- I won't rest till it's the best ... Programmer, Linux Scalability Paul Jackson <pj@sgi.com> 1.925.600.0401 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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