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SubjectRe: [PATCH] sysctl_panic_on_oom broken
> On Tue, 17 Apr 2007, Larry Woodman wrote:
>
> > out_of_memory() does not panic when sysctl_panic_on_oom is set
> > if constrained_alloc() does not return CONSTRAINT_NONE. Instead,
> > out_of_memory() kills the current process whenever constrained_alloc()
> > returns either CONSTRAINT_MEMORY_POLICY or CONSTRAINT_CPUSET.
> > This patch fixes this problem:
>
> It recreates the old problem that we OOM while we still have memory
> in other parts of the system.

Hmm. User's expectation is failover of clustering ASAP by panic.
Even if free memory remain due to cpuset/mempolicy setting,
some people may want failover soon.

Of course some other people don't want panic if free memory remain.
I think it depends on user.

If panic_on_oom is 1, only panic if mempolicy/cpuset is not used.
And if panic_on_oom is 2, panic on all case.
This might be desirable.

Bye.


--
Yasunori Goto


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