Re: [PATCH] Make `hash_long' function work if bits parameter is 0.

[Linus Torvalds]

On Fri, 6 Dec 2002, Miles Bader wrote:
>
> If the bits parameter of hash_long (in <linux/hash.h>) is 0, then it
> ends up right-shifting by BITS_PER_LONG, which is undefined in C (and
> often is a nop).

I would much rather just add a comment saying that "bits" had better be in
a valid range. There are no valid uses for a 0-bit hash table that I can
see, and undefined behaviour for undefined operations is fine with me.

		Linus