Re: [PATCH] Factor in buddy allocator alignment requirements innode memory alignment

[Dave Hansen]

On Mon, 2005-05-16 at 12:55 -0700, christoph wrote:
> On Mon, 16 May 2005, Dave Hansen wrote:
> > > Because the buddy allocator is complaining about wrongly allocated zones!
> > 
> > Just because it complains doesn't mean that anything is actually
> > wrong :)
> > 
> > Do you know which pieces of code actually break if the alignment doesn't
> > meet what that warning says?
> 
> I have seen nothing break but 4 MB allocations f.e. will not be allocated 
> on a 4MB boundary with a 2 MB zone alignment. The page allocator always 
> returnes properly aligned pages but 4MB allocations are an exception? 

I wasn't aware there was an alignment exception in the allocator for 4MB
pages.  Could you provide some examples?

-- Dave

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/