Re: [PATCH] slub: use N_NORMAL_MEMORY in can_free_to_pcs to handle remote frees

[Harry Yoo (Oracle)]

On Fri, Apr 03, 2026 at 03:37:36PM +0800, Hao Li wrote:
> Memory hotplug now keeps N_NORMAL_MEMORY up to date correctly, so make
> can_free_to_pcs() use it.
> 
> As a result, when freeing objects on memoryless nodes, or on nodes that
> have memory but only in ZONE_MOVABLE, the objects can be freed to the
> sheaf instead of going through the slow path.
> 
> Signed-off-by: Hao Li <hao.li@xxxxxxxxx>
> ---

Acked-by: Harry Yoo (Oracle) <harry@xxxxxxxxxx>

> Hi Vlastimil, this patch depends on a prerequisite patch[1] from a few days
> ago. I'm not sure how this should be handled.

> I wonder if Andrew might put them in the same tree.

But it also depends on the patch series
"[PATCH 0/3] slab: support memoryless nodes with sheaves".

So perhaps better send it to Linus after 7.1-rc1?

Thanks!

> [1] https://lore.kernel.org/linux-mm/20260330035941.518186-1-hao.li@xxxxxxxxx/

-- 
Cheers,
Harry / Hyeonggon