Re: [RFC][PATCH 2.5.70] dynamically tunable semmnu and semume

From: Manfred Spraul (manfred@colorfullife.com)
Date: Fri Jun 06 2003 - 11:42:03 EST


Ameya Mitragotri wrote:

>Find below the patch (RFC) that makes semmnu and semume dynamically
>tunable through /proc.
>
AFAICS the patch implements semmnu and semume, correct? The current
implemention permits an unlimited number of undo structures.

1) Why do you want to introduce a limit? Have you found a potential DoS?
2) What is counted by semume? Individual undo entries, or undo arrays?
Linux differs from the normal unix sysv implementation: there is a per
process, per semaphore set array of undo entries.

--
    Manfred

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