Merge branch 'master' into next

[platform/kernel/linux-starfive.git] / mm / slub.c

diff --git a/mm/slub.c b/mm/slub.c
index bec0e35..a2fe172 100644 (file)
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1917,17 +1917,6 @@ void kmem_cache_free(struct kmem_cache *s, void *x)
 }
 EXPORT_SYMBOL(kmem_cache_free);
 
-/* Figure out on which slab page the object resides */
-static struct page *get_object_page(const void *x)
-{
-       struct page *page = virt_to_head_page(x);
-
-       if (!PageSlab(page))
-               return NULL;
-
-       return page;
-}
-
 /*
  * Object placement in a slab is made very easy because we always start at
  * offset 0. If we tune the size of the object to the alignment then we can
@@ -2386,35 +2375,6 @@ error:
 }
 
 /*
- * Check if a given pointer is valid
- */
-int kmem_ptr_validate(struct kmem_cache *s, const void *object)
-{
-       struct page *page;
-
-       if (!kern_ptr_validate(object, s->size))
-               return 0;
-
-       page = get_object_page(object);
-
-       if (!page || s != page->slab)
-               /* No slab or wrong slab */
-               return 0;
-
-       if (!check_valid_pointer(s, page, object))
-               return 0;
-
-       /*
-        * We could also check if the object is on the slabs freelist.
-        * But this would be too expensive and it seems that the main
-        * purpose of kmem_ptr_valid() is to check if the object belongs
-        * to a certain slab.
-        */
-       return 1;
-}
-EXPORT_SYMBOL(kmem_ptr_validate);
-
-/*
  * Determine the size of a slab object
  */
 unsigned int kmem_cache_size(struct kmem_cache *s)