1 files changed, 16 insertions, 0 deletions

diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index 9abf04ed0999..db7d5de00c5f 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -110,4 +110,20 @@ static inline void sysfs_slab_remove(struct kmem_cache *s)
 }
 #endif
 
+
+/**
+ * virt_to_obj - returns address of the beginning of object.
+ * @s: object's kmem_cache
+ * @slab_page: address of slab page
+ * @x: address within object memory range
+ *
+ * Returns address of the beginning of object
+ */
+static inline void *virt_to_obj(struct kmem_cache *s,
+                                const void *slab_page,
+                                const void *x)
+{
+        return (void *)x - ((x - slab_page) % s->size);
+}
+
 #endif /* _LINUX_SLUB_DEF_H */