On Thu, Oct 17, 2019 at 02:12:05PM +0300, Kirill A. Shutemov wrote: > > + spin_lock(&node_migration_lock); > > + WRITE_ONCE(node_migration[nid], TERMINAL_NODE); > > + spin_unlock(&node_migration_lock); > > + return count; > > + } > > + if (next >= MAX_NUMNODES || !node_online(next)) > > + return -EINVAL; > > What prevents offlining after the check? And what is story with memory hotplug interaction? I don't see any hooks into memory hotplug to adjust migration path on offlining. Hm? -- Kirill A. Shutemov
