Re: [PATCH] slab: unsigned slabp->inuse cannot be less than 0

[Christoph Lameter <cl@linux-foundation.org>]

Ok here it is. But I think you are well capable of reviewing trivial 
patches on your own.

Acked-by: Christoph Lameter <cl@linux-foundation.org>

On Thu, 30 Oct 2008, Pekka Enberg wrote:

> roel kluin wrote:
>> unsigned slabp->inuse cannot be less than 0
>
> Christoph, this is on my to-merge list but an ACK would be nice.
>
>> Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
>> ---
>> N.B. It could be possible that a different check is needed.
>> I may not be able to respond for a few weeks.
>> 
>> diff --git a/mm/slab.c b/mm/slab.c
>> index 0918751..f634a87 100644
>> --- a/mm/slab.c
>> +++ b/mm/slab.c
>> @@ -2997,7 +2997,7 @@ retry:
>>  		 * there must be at least one object available for
>>  		 * allocation.
>>  		 */
>> -		BUG_ON(slabp->inuse < 0 || slabp->inuse >= cachep->num);
>> +		BUG_ON(slabp->inuse >= cachep->num);
>>   		while (slabp->inuse < cachep->num && batchcount--) {
>>  			STATS_INC_ALLOCED(cachep);
>> 
>
>

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