Re: [PATCH 3/5] mm/slab: Do not call kmalloc_large() for unsupported size

[Hyeonggon Yoo]

On Thu, Feb 24, 2022 at 01:48:47PM +0100, Vlastimil Babka wrote:
> On 2/21/22 11:53, Hyeonggon Yoo wrote:
> > SLAB's kfree() does not support freeing an object that is allocated from
> > kmalloc_large(). Fix this as SLAB do not pass requests larger than
> > KMALLOC_MAX_CACHE_SIZE directly to page allocator.
> 
> AFAICS this issue is limited to build-time constant sizes. Might be better
> to make this a build error rather than build-time NULL?

Right. And sounds better. But what about another direction as Matthew said:
passing large requests to page allocator like SLUB?

I think it's better for maintenance. Any obstacles for this direction?

Thank you!

> > Signed-off-by: Hyeonggon Yoo <42.hyeyoo@xxxxxxxxx>

-- 
Hyeonggon