[PATCH] drivers/base, mm: move arch_numa.c to mm/

[Mike Rapoport]

On Thu, Aug 06, 2026 at 03:48:42PM -0700, Andrew Morton wrote:
> On Thu, 06 Aug 2026 09:58:38 +0300 "Mike Rapoport (Microsoft)" <rppt at kernel.org> wrote:
> 
> > arch_numa.c implements boot time discovery and initialization of NUMA
> > topology on architectures that select GENERIC_ARCH_NUMA (currently arm64
> > and riscv).
> > 
> > Since this is step in the initialization of the memory management
> > subsystem, it's logical to have arch_numa.c in mm/ alongside numa.c,
> > numa_memblks.c and numa_emulation.c.
> > 
> > Move arch_numa.c to mm/ and add its F: entry to "MEMBLOCK AND MEMORY
> > MANAGEMENT INITIALIZATION" in MAINTAINERS.
> 
> Unclear what tree this is targeted at.  I grabbed it.
 
Heh, it's muscle memory to send such patches to you :)
Let's keep this in your tree, thanks!
 
> mm-stable does have this change:
> 
> --- linux-7.2-rc5/drivers/base/arch_numa.c	2026-07-27 04:44:55.000000000 -0700
> +++ 25/drivers/base/arch_numa.c	2026-08-06 15:47:59.019918702 -0700
> @@ -231,10 +231,6 @@ static int __init numa_init(int (*init_f
>  {
>  	int ret;
>  
> -	nodes_clear(numa_nodes_parsed);
> -	nodes_clear(node_possible_map);
> -	nodes_clear(node_online_map);
> -
>  	ret = numa_memblks_init(init_func, /* memblock_force_top_down */ false);
>  	if (ret < 0)
>  		goto out_free_distance;
> 
> 
> which is easily handled either way.

-- 
Sincerely yours,
Mike.