oom_killer.c - oom_kill_task and __oom_kill_task question

[Vicente Feito]

Why is it that p->mm it's checked inside oom_kill_task and again in 
__oom_kill_task? Cause __oom_kill_task it's called in case p->mm not null and 
not &init_mm, otherwise it just returns NULL, this has been bothering me, 
I've patched with the last rc5 and it's still there, why?
Is there a chance a process can grow an mm area between one call and another?

Vicente.
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