Re: Why do we let munmap fail?

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On 05/21/2018 03:07 PM, Daniel Colascione wrote:
> Now let's return to max_map_count itself: what is it supposed to achieve?
> If we want to limit application kernel memory resource consumption, let's
> limit application kernel memory resource consumption, accounting for it on
> a byte basis the same way we account for other kernel objects allocated on
> behalf of userspace. Why should we have a separate cap just for the VMA
> count?

VMAs consume kernel memory and we can't reclaim them.  That's what it
boils down to.




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