Re: [PATCH v2 09/13] mm/slab: change struct slabobj_ext to a union

[Vlastimil Babka (SUSE)]

On 7/23/26 11:56, Hao Li wrote:
> On Thu, Jul 23, 2026 at 03:27:51PM +0900, Harry Yoo wrote:
>> 
>> and drop OBJEXT_FLAG_UNUSED.
> 
> Yes, this idea is insightful and I think it may need a standalone patch without
> blocking current patchset.
> 
>> 
>> ...not sure how much we care about this on 32bit though.
> 
> Yeah, 32bit is a rare arch today :)

Agreed with you both. Let's deal with it later.
Also AFAICS the memory was already wasted on 32bit prior this series when
e.g. CONFIG_MEM_ALLOC_PROFILING was disabled, so there was just 4-byte objcg
pointer in 8-byte aligned slabobj_ext, right?