Re: [PATCH v3 3/3] mm/mempolicy: Support memory hotplug in weighted interleave

[Gregory Price]

On Mon, Mar 24, 2025 at 05:54:27PM +0900, Rakie Kim wrote:
> 
> I'm sorry, the code is missing.
> I may not fully understand the scenario you described, but I think your concern
> can be addressed by adding a simple check like the following:
> 
>     case MEM_OFFLINE:
>         if (!node_state(nid, N_MEMORY)) --> this point
>             sysfs_wi_node_release(nid);
>

This should work.  I have some questions about whether there might be
some subtle race conditions with this implementation, but I can take a
look after LSFMM.  (Example: Two blocks being offlined/onlined at the
same time, is state(nid, N_MEMORY) a raced value?)

~Gregory