Re: [PATCH 01 of 12] Core of mmu notifiers

[Avi Kivity <avi@qumranet.com>]

Andrea Arcangeli wrote:
> On Tue, Apr 22, 2008 at 04:56:10PM +0200, Eric Dumazet wrote:
>   
>> Andrea Arcangeli a ecrit :
>>     
>>> +
>>> +static int mm_lock_cmp(const void *a, const void *b)
>>> +{
>>> +	cond_resched();
>>> +	if ((unsigned long)*(spinlock_t **)a <
>>> +	    (unsigned long)*(spinlock_t **)b)
>>> +		return -1;
>>> +	else if (a == b)
>>> +		return 0;
>>> +	else
>>> +		return 1;
>>> +}
>>> +
>>>       
>> This compare function looks unusual...
>> It should work, but sort() could be faster if the
>> if (a == b) test had a chance to be true eventually...
>>     
>
> Hmm, are you saying my mm_lock_cmp won't return 0 if a==b?
>
>   

You need to compare *a to *b (at least, that's what you're doing for the 
< case).

-- 
error compiling committee.c: too many arguments to function

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