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Subject[PATCH 1/2] mm/page_alloc.c: leverage compiler to zero out used_mask
Date
Since we always clear used_mask before getting node order, we can
leverage compiler to do this instead of at run time.

Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
---
mm/page_alloc.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 0e823bca3f2f..2144b6ceb119 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5587,14 +5587,13 @@ static void build_zonelists(pg_data_t *pgdat)
{
static int node_order[MAX_NUMNODES];
int node, load, nr_nodes = 0;
- nodemask_t used_mask;
+ nodemask_t used_mask = {.bits = {0}};
int local_node, prev_node;

/* NUMA-aware ordering of nodes */
local_node = pgdat->node_id;
load = nr_online_nodes;
prev_node = local_node;
- nodes_clear(used_mask);

memset(node_order, 0, sizeof(node_order));
while ((node = find_next_best_node(local_node, &used_mask)) >= 0) {
--
2.23.0
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