On 9/19/18 6:08 AM, Oscar Salvador wrote: > From: Oscar Salvador <osalvador@xxxxxxx> > > In node_states_check_changes_online, we check if the node will > have to be set for any of the N_*_MEMORY states after the pages > have been onlined. > > Later on, we perform the activation in node_states_set_node. > Currently, in node_states_set_node we set the node to N_MEMORY > unconditionally. > This means that we call node_set_state for N_MEMORY every time > pages go online, but we only need to do it if the node has not yet been > set for N_MEMORY. > > Fix this by checking status_change_nid. > > Signed-off-by: Oscar Salvador <osalvador@xxxxxxx> Reviewed-by: Pavel Tatashin <pavel.tatashin@xxxxxxxxxxxxx> > --- > mm/memory_hotplug.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c > index 38d94b703e9d..63facfc57224 100644 > --- a/mm/memory_hotplug.c > +++ b/mm/memory_hotplug.c > @@ -753,7 +753,8 @@ static void node_states_set_node(int node, struct memory_notify *arg) > if (arg->status_change_nid_high >= 0) > node_set_state(node, N_HIGH_MEMORY); > > - node_set_state(node, N_MEMORY); > + if (arg->status_change_nid >= 0) > + node_set_state(node, N_MEMORY); > } > > static void __meminit resize_zone_range(struct zone *zone, unsigned long start_pfn, >
