[PATCH 3/3] mm: use zone_is_initialized() instead of if(zone->wait_table)

[Xishi Qiu]

Use "zone_is_initialized()" instead of "if (zone->wait_table)".
Simplify the code, no functional change.

Signed-off-by: Xishi Qiu <qiuxishi@xxxxxxxxxx>
---
 mm/memory_hotplug.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index f3fcac1..387654b 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -194,7 +194,7 @@ void register_page_bootmem_info_node(struct pglist_data *pgdat)
 
 	zone = &pgdat->node_zones[0];
 	for (; zone < pgdat->node_zones + MAX_NR_ZONES - 1; zone++) {
-		if (zone->wait_table) {
+		if (zone_is_initialized(zone)) {
 			nr_pages = zone->wait_table_hash_nr_entries
 				* sizeof(wait_queue_head_t);
 			nr_pages = PAGE_ALIGN(nr_pages) >> PAGE_SHIFT;
-- 
1.7.1

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