Re: [PATCH v5 2/3] mm/mempolicy: add set_mempolicy_home_node syscall

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On Tue 30-11-21 14:29:02, Aneesh Kumar K.V wrote:
[...]
> Now IIUC, even after a node is marked offline via try_offline_node() we
> still be able to access the zonelist details using the pgdata struct. 

Yes, pgdat stays in place along with its zonelists when the node is
completely hotremoved. This is unlikely to ever change because way too
many operations would have to be hotplug aware. Leaving home node behind
is not really much different from the preferred node policy or any other
policy mask.
-- 
Michal Hocko
SUSE Labs



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