Re: [PATCH] ipc,shm: disable shmmax and shmall by default

[KOSAKI Motohiro]

> This change allows Linux to treat shm just as regular anonymous memory.
> One important difference between them, though, is handling out-of-memory
> conditions: as opposed to regular anon memory, the OOM killer will not
> kill processes that are hogging memory through shm, allowing users to
> potentially abuse this. To overcome this situation, the shm_rmid_forced
> option must be enabled.

Off topic: systemd implemented similar feature RemoveIPC and it is
enabled by default.
http://lists.freedesktop.org/archives/systemd-devel/2014-March/018232.html
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