Re: kfree(0) - ok?

[Satyam Sharma]

On Fri, 17 Aug 2007, Christoph Lameter wrote:

> On Fri, 17 Aug 2007, Andrew Morton wrote:
> 
> > are we seeing a pattern here?  We could stick the unlikely inside
> > ZERO_OR_NULL_PTR() itself.  That's a little bit sleazy though - there might
> > be future callsites at which it is likely, who knows?
> 
> Thought about that myself but then there would be a weird side effect to 
> ZERO_OR_NULL_PTR().

True, but I suspect such a side-effect to actually matter only for the
BUG_ON case, where introducing the unlikely() would mean the output from
the show_registers() dump during the BUG() would show a not-useful-at-all
%%eax == 0x0000001 value, but only if CONFIG_PROFILE_LIKELY=y, admittedly.

> But since your thinking along the same lines: Lets do 
> it. I will fix up the patch to do just that.

Ok, thanks.


Satyam
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