Re: [PATCH v5 2/3] mm/mempolicy: add set_mempolicy_home_node syscall
From: Michal Hocko <mhocko@suse.com>
Date: 2021-11-30 09:59:55
Also in:
linux-mm
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