[PATCH 4/6] mm, memory_hotplug: use node instead of zone in can_online_high_movable

[Michal Hocko]

From: Michal Hocko <mhocko@xxxxxxxx>

the primary purpose of this helper is to query the node state so use
the node id directly. This is a preparatory patch for later changes.

Signed-off-by: Michal Hocko <mhocko@xxxxxxxx>
---
 mm/memory_hotplug.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 056dbbe6d20e..221f622bcc88 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -936,15 +936,15 @@ static int online_pages_range(unsigned long start_pfn, unsigned long nr_pages,
  * When CONFIG_MOVABLE_NODE, we permit onlining of a node which doesn't have
  * normal memory.
  */
-static bool can_online_high_movable(struct zone *zone)
+static bool can_online_high_movable(int nid)
 {
 	return true;
 }
 #else /* CONFIG_MOVABLE_NODE */
 /* ensure every online node has NORMAL memory */
-static bool can_online_high_movable(struct zone *zone)
+static bool can_online_high_movable(int nid)
 {
-	return node_state(zone_to_nid(zone), N_NORMAL_MEMORY);
+	return node_state(nid, N_NORMAL_MEMORY);
 }
 #endif /* CONFIG_MOVABLE_NODE */
 
@@ -1078,7 +1078,7 @@ int __ref online_pages(unsigned long pfn, unsigned long nr_pages, int online_typ
 
 	if ((zone_idx(zone) > ZONE_NORMAL ||
 	    online_type == MMOP_ONLINE_MOVABLE) &&
-	    !can_online_high_movable(zone))
+	    !can_online_high_movable(pfn_to_nid(pfn)))
 		return -EINVAL;
 
 	if (online_type == MMOP_ONLINE_KERNEL) {
-- 
2.11.0