Re: [patch 7/8] fdmap v2 - implement sys_socket2

From: Davide Libenzi
Date: Fri Jun 08 2007 - 14:11:36 EST

On Fri, 8 Jun 2007, Alan Cox wrote:

> > Um, how cheap do you need it? get_random_int() is actually pretty
> > cheep, since it was designed to be usable by the networking stack for
> > sequence numbers for TCP packets; and it's not like sys_close() or
> > sys_open() is a majorly critical path, is it? If the concern is
> At this point wouldn't it be cheaper to allocate file handles using a
> different algorithm than firing up the RNG - say like in the POSIX
> fashion ...

The only reason we use a floating base, is because Uli preferred to have
non-exactly predictable fd allocations. There no reason of re-doing the
same POSIX mistake all over again:

Errare humanum est, perseverare autem diabolicum

- Davide

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