Re: [PATCH] mempolicy: check home_node is in the nodes of policy

[ustc]

For example,  In a system with NUMA nodes 0,1,2,3, i mbind process to 
node 0-2 and set home_node to node 3, it will not be allocated from node 
3, then from node closer to node 3. But i think home_node should be set 
directly from node 0-2, which makes more sense. So i think it needs to 
return failure to prompt user.


On 2024/1/28 16:29, Andrew Morton wrote:
> On Fri, 26 Jan 2024 08:22:40 -0500 Chunsheng Luo <luochunsheng@xxxxxxxx> wrote:
>
> > set_mempolicy_home_node should be used after setting the memory
> > policy. If the home_node isn't in the nodes of policy, we should
> > return failure to avoid misunderstanding.
> Thanks.  Under what circumstances does userspace trigger this issue?