From mboxrd@z Thu Jan  1 00:00:00 1970
From: Patrick McHardy <kaber@trash.net>
Subject: Re: [RFC] Die to NOTRACK/TRACE, long live MARK!
Date: Tue, 25 May 2004 19:45:35 +0200
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To: Pablo Neira <pablo@eurodev.net>
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Pablo Neira wrote:

> if we use atomic operations *_bit for status field in ip_conntrack, we 
> only use 24 bits of that unsigned long, this issue lets us keep 
> compatibility with some special platforms which only support atomic 
> operations of that size.
>
> I read that in  Robert Love's linux kernel development book I think. 
> If missing anything, please let me know.


This applies to atomic_t and atomic_inc, atomic_dec_and_test, etc., but 
not to set_bit/test_bit.
It can operate on bitmaps larger than unsigned long, but I don't know if 
it will cause problems
with smaller types.

Regards
Patrick