1 files changed, 9 insertions, 4 deletions

diff --git a/lib/radix-tree.c b/lib/radix-tree.c
index 9599aa72d7a0..3291a8e37490 100644
--- a/lib/radix-tree.c
+++ b/lib/radix-tree.c
@@ -27,6 +27,7 @@
 #include <linux/radix-tree.h>
 #include <linux/percpu.h>
 #include <linux/slab.h>
+#include <linux/kmemleak.h>
 #include <linux/notifier.h>
 #include <linux/cpu.h>
 #include <linux/string.h>
@@ -194,12 +195,17 @@ radix_tree_node_alloc(struct radix_tree_root *root)
                  * succeed in getting a node here (and never reach
                  * kmem_cache_alloc)
                  */
-                rtp = &__get_cpu_var(radix_tree_preloads);
+                rtp = this_cpu_ptr(&radix_tree_preloads);
                 if (rtp->nr) {
                         ret = rtp->nodes[rtp->nr - 1];
                         rtp->nodes[rtp->nr - 1] = NULL;
                         rtp->nr--;
                 }
+                /*
+                 * Update the allocation stack trace as this is more useful
+                 * for debugging.
+                 */
+                kmemleak_update_trace(ret);
         }
         if (ret == NULL)
                 ret = kmem_cache_alloc(radix_tree_node_cachep, gfp_mask);
@@ -250,14 +256,14 @@ static int __radix_tree_preload(gfp_t gfp_mask)
         int ret = -ENOMEM;
 
         preempt_disable();
-        rtp = &__get_cpu_var(radix_tree_preloads);
+        rtp = this_cpu_ptr(&radix_tree_preloads);
         while (rtp->nr < ARRAY_SIZE(rtp->nodes)) {
                 preempt_enable();
                 node = kmem_cache_alloc(radix_tree_node_cachep, gfp_mask);
                 if (node == NULL)
                         goto out;
                 preempt_disable();
-                rtp = &__get_cpu_var(radix_tree_preloads);
+                rtp = this_cpu_ptr(&radix_tree_preloads);
                 if (rtp->nr < ARRAY_SIZE(rtp->nodes))
                         rtp->nodes[rtp->nr++] = node;
                 else
@@ -1296,7 +1302,6 @@ static inline void radix_tree_shrink(struct radix_tree_root *root)
 /**
  *      __radix_tree_delete_node    -    try to free node after clearing a slot
  *      @root:          radix tree root
- *      @index:         index key
  *      @node:          node containing @index
  *
  *      After clearing the slot at @index in @node from radix tree