powerpc/rtas: Validate rtas.entry before calling enter_rtas()

[pandora-kernel.git] / arch / powerpc / mm / gup.c

diff --git a/arch/powerpc/mm/gup.c b/arch/powerpc/mm/gup.c
index fec1320..d7efdbf 100644 (file)
--- a/arch/powerpc/mm/gup.c
+++ b/arch/powerpc/mm/gup.c
@@ -16,16 +16,6 @@
 
 #ifdef __HAVE_ARCH_PTE_SPECIAL
 
-static inline void get_huge_page_tail(struct page *page)
-{
-       /*
-        * __split_huge_page_refcount() cannot run
-        * from under us.
-        */
-       VM_BUG_ON(atomic_read(&page->_count) < 0);
-       atomic_inc(&page->_count);
-}
-
 /*
  * The performance critical leaf functions are made noinline otherwise gcc
  * inlines everything into a single function which results in too much
@@ -57,8 +47,6 @@ static noinline int gup_pte_range(pmd_t pmd, unsigned long addr,
                        put_page(page);
                        return 0;
                }
-               if (PageTail(page))
-                       get_huge_page_tail(page);
                pages[*nr] = page;
                (*nr)++;