mm: use zone_is_initialized() instead of if(zone->wait_table)

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

Signed-off-by: Xishi Qiu <qiuxishi@huawei.com>
Cc: Cody P Schafer <cody@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 4f5df61d6016d4831ac8b9d7a6107dd2043b9aa4..46b489cacdd8cee203a8c46a797c0aab8c9d07e5 100644 (file)
--- 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;