From d3ba3ae19751e476b0840a0c9a673a5766fa3219 Mon Sep 17 00:00:00 2001 From: Baoquan He Date: Mon, 13 May 2019 17:17:35 -0700 Subject: [PATCH] mm/memory_hotplug.c: fix the wrong usage of N_HIGH_MEMORY In node_states_check_changes_online(), N_HIGH_MEMORY is used to substitute ZONE_HIGHMEM directly. This is not right. N_HIGH_MEMORY is to mark the memory state of node. Here zone index is checked, which should be compared with 'ZONE_HIGHMEM' accordingly. Replace it with ZONE_HIGHMEM. This is a code cleanup - no known runtime effects. Link: http://lkml.kernel.org/r/20190320080732.14933-1-bhe@redhat.com Fixes: 8efe33f40f3e ("mm/memory_hotplug.c: simplify node_states_check_changes_online") Signed-off-by: Baoquan He Reviewed-by: David Hildenbrand Acked-by: Michal Hocko Reviewed-by: Oscar Salvador Cc: Wei Yang Cc: Mike Rapoport Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memory_hotplug.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index ed4e70c501e6..a279671b9968 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -714,7 +714,7 @@ static void node_states_check_changes_online(unsigned long nr_pages, if (zone_idx(zone) <= ZONE_NORMAL && !node_state(nid, N_NORMAL_MEMORY)) arg->status_change_nid_normal = nid; #ifdef CONFIG_HIGHMEM - if (zone_idx(zone) <= N_HIGH_MEMORY && !node_state(nid, N_HIGH_MEMORY)) + if (zone_idx(zone) <= ZONE_HIGHMEM && !node_state(nid, N_HIGH_MEMORY)) arg->status_change_nid_high = nid; #endif }