[PATCH v2 4/5] hugetlb_cgroup: use helper macro NUMA_NO_NODE

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It's better to use NUMA_NO_NODE instead of magic number -1. Minor
readability improvement.

Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Reviewed-by: Mina Almasry <almasrymina@xxxxxxxxxx>
---
 mm/hugetlb_cgroup.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/hugetlb_cgroup.c b/mm/hugetlb_cgroup.c
index 01a709468937..2affccfe59f1 100644
--- a/mm/hugetlb_cgroup.c
+++ b/mm/hugetlb_cgroup.c
@@ -154,9 +154,9 @@ hugetlb_cgroup_css_alloc(struct cgroup_subsys_state *parent_css)
 	 * function.
 	 */
 	for_each_node(node) {
-		/* Set node_to_alloc to -1 for offline nodes. */
+		/* Set node_to_alloc to NUMA_NO_NODE for offline nodes. */
 		int node_to_alloc =
-			node_state(node, N_NORMAL_MEMORY) ? node : -1;
+			node_state(node, N_NORMAL_MEMORY) ? node : NUMA_NO_NODE;
 		h_cgroup->nodeinfo[node] =
 			kzalloc_node(sizeof(struct hugetlb_cgroup_per_node),
 				     GFP_KERNEL, node_to_alloc);
-- 
2.23.0





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