Re: [PATCH] Update jhash.h with the new version of Jenkins' hash

From: Eric W. Biederman
Date: Thu Feb 12 2009 - 14:58:24 EST


Jozsef Kadlecsik <kadlec@xxxxxxxxxxxxxxxxx> writes:

> On Wed, 11 Feb 2009, wli@xxxxxxxxxxxxxxxxx wrote:
>
>> On Wed, Feb 11, 2009 at 11:19:20AM +0100, Jozsef Kadlecsik wrote:
>> > /* The golden ration: an arbitrary value */
>> > -#define JHASH_GOLDEN_RATIO 0x9e3779b9
>> > +#define JHASH_GOLDEN_RATIO 0xdeadbeef
>>

0xdeadbeef is a really bad choice of an arbitrary value. It is
already used in multiple places. Only a few of which are currently
listed in linux/poison.h and if I happened to see that number in a
debug trace having to sort through all of the possible sources looks
like a major pain.

I don't really care what we call it but somehow 0xdeadbeef strikes me
as wrong and something that will make debugging harder.

Eric
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