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Diffstat (limited to 'include/linux/radix-tree.h')
-rw-r--r--include/linux/radix-tree.h11
1 files changed, 10 insertions, 1 deletions
diff --git a/include/linux/radix-tree.h b/include/linux/radix-tree.h
index 63e62372443a..c2a9f7c90727 100644
--- a/include/linux/radix-tree.h
+++ b/include/linux/radix-tree.h
@@ -16,11 +16,20 @@
#include <linux/spinlock.h>
#include <linux/types.h>
#include <linux/xarray.h>
+#include <linux/local_lock.h>
/* Keep unconverted code working */
#define radix_tree_root xarray
#define radix_tree_node xa_node
+struct radix_tree_preload {
+ local_lock_t lock;
+ unsigned nr;
+ /* nodes->parent points to next preallocated node */
+ struct radix_tree_node *nodes;
+};
+DECLARE_PER_CPU(struct radix_tree_preload, radix_tree_preloads);
+
/*
* The bottom two bits of the slot determine how the remaining bits in the
* slot are interpreted:
@@ -245,7 +254,7 @@ int radix_tree_tagged(const struct radix_tree_root *, unsigned int tag);
static inline void radix_tree_preload_end(void)
{
- preempt_enable();
+ local_unlock(&radix_tree_preloads.lock);
}
void __rcu **idr_get_free(struct radix_tree_root *root,