Re: [patch] drop epoll max_user_instances and rely only on max_user_watches

[Michael Kerrisk]

On Thu, Jan 29, 2009 at 9:57 PM, Andrew Morton
<akpm@xxxxxxxxxxxxxxxxxxxx> wrote:
>
>> Subject: [patch] drop epoll max_user_instances and rely only on max_user_watches
>
> nanonit: please prepare titles in the form "subsystem-id:
> what-i-did-to-it", so a suitable name here would be
>
>        epoll: drop max_user_instances and rely only on max_user_watches
>
> On Wed, 28 Jan 2009 20:56:07 -0800 (PST) Davide Libenzi <davidel@xxxxxxxxxxxxxxx> wrote:
>
>> Linus suggested to put limits where the money is, and max_user_watches
>> already does that w/out the need of max_user_instances. That has the
>> advantage to mitigate the potential DoS while allowing pretty generous
>> default behavior.

[...]

> I assume that because you based all this on all the other patches, you
> view it as 2.6.30 material?

Since max_user_instances was added in 2.6.28, and this is an ABI
change, I suggest this should go into .29-rc, so that
max_user_instances spends as little time in the wild as possible.

Cheers,

Michael

-- 
Michael Kerrisk
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