Messages in this thread | | | Date | Tue, 14 Oct 2003 08:17:59 -0700 | From | "Paul E. McKenney" <> | Subject | OK to set PF_MEMDIE on cleanup tasks? |
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Hello!
We have tasks that actively return memory to the system, which we would like to exempt from the OOM killer, as killing such tasks under low-memory conditions would indeed be counterproductive. It looks like the "official" way to do this is to catch/ignore signal 15, which results in PF_MEMDIE being set (in the 2.6 kernel), thus preventing the OOM killer from killing the task again. I don't see where PF_MEMDIE is cleared, though there are a number of subtle ways one might do this that I would have missed.
So... Is it considered legit to simply set PF_MEMDIE when creating the cleanup task? Or is there some reason that one should deal with signal 15?
All enlightenment much appreciated!
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