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Subject[Patch v4] mm/page_alloc.c: use NODE_MASK_NONE in build_zonelists()
Date
Slightly simplify the code by initializing user_mask with NODE_MASK_NONE,
instead of later calling nodes_clear(). This saves a line of code.

Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: David Hildenbrand <david@redhat.com>

---
v4: adjust subject/description as suggested by John Hubbard
v3: adjust the commit log a little
v2: use NODE_MASK_NONE as suggested by David Hildenbrand
---
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 ef790dfad6aa..dfcf2682ed40 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 = NODE_MASK_NONE;
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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