Hi Michal,

At 06/29/2017 07:12 PM, Michal Hocko wrote:
On Wed 21-06-17 10:57:26, Dou Liyang wrote:
... initializes local parameters "p_node" & "parent" for
register_node().

But, register_node() does not use them.

Remove the related code of "parent" node, cleanup __register_one_node()
and register_node().

Cc: Andrew Morton <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: [email protected]
Signed-off-by: Dou Liyang <[email protected]>
Acked-by: David Rientjes <[email protected]>

I am sorry, this slipped through cracks.
Acked-by: Michal Hocko <[email protected]>

Thanks for your Acked-by, but this patch has been added to the -mm tree. Its filename is
   mm-drop-useless-local-parameters-of-__register_one_node.patch

This patch should soon appear at

http://ozlabs.org/~akpm/mmots/broken-out/mm-drop-useless-local-parameters-of-__register_one_node.patch
and later at

http://ozlabs.org/~akpm/mmotm/broken-out/mm-drop-useless-local-parameters-of-__register_one_node.patch

I don't know what should I do next ? :)

Thanks,
        dou.

---
V1 --> V2:
Rebase it on
git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git akpm

 drivers/base/node.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/base/node.c b/drivers/base/node.c
index 73d39bc..d8dc830 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -288,7 +288,7 @@ static void node_device_release(struct device *dev)
  *
  * Initialize and register the node device.
  */
-static int register_node(struct node *node, int num, struct node *parent)
+static int register_node(struct node *node, int num)
 {
        int error;

@@ -567,19 +567,14 @@ static void init_node_hugetlb_work(int nid) { }

 int __register_one_node(int nid)
 {
-       int p_node = parent_node(nid);
-       struct node *parent = NULL;
        int error;
        int cpu;

-       if (p_node != nid)
-               parent = node_devices[p_node];
-
        node_devices[nid] = kzalloc(sizeof(struct node), GFP_KERNEL);
        if (!node_devices[nid])
                return -ENOMEM;

-       error = register_node(node_devices[nid], nid, parent);
+       error = register_node(node_devices[nid], nid);

        /* link cpu under this node */
        for_each_present_cpu(cpu) {
--
2.5.5



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