ARM64: dts: rockchip: configure EAS data for rk3368

[firefly-linux-kernel-4.4.55.git] / mm / util.c

diff --git a/mm/util.c b/mm/util.c
index 9af1c12b310c7f092f030fc1a4303c287724b0a6..d5259b62f8d770eca8a9b1921fdd603f5f8be998 100644 (file)
--- a/mm/util.c
+++ b/mm/util.c
@@ -199,36 +199,11 @@ void __vma_link_list(struct mm_struct *mm, struct vm_area_struct *vma,
 }
 
 /* Check if the vma is being used as a stack by this task */
-static int vm_is_stack_for_task(struct task_struct *t,
-                               struct vm_area_struct *vma)
+int vma_is_stack_for_task(struct vm_area_struct *vma, struct task_struct *t)
 {
        return (vma->vm_start <= KSTK_ESP(t) && vma->vm_end >= KSTK_ESP(t));
 }
 
-/*
- * Check if the vma is being used as a stack.
- * If is_group is non-zero, check in the entire thread group or else
- * just check in the current task. Returns the task_struct of the task
- * that the vma is stack for. Must be called under rcu_read_lock().
- */
-struct task_struct *task_of_stack(struct task_struct *task,
-                               struct vm_area_struct *vma, bool in_group)
-{
-       if (vm_is_stack_for_task(task, vma))
-               return task;
-
-       if (in_group) {
-               struct task_struct *t;
-
-               for_each_thread(task, t) {
-                       if (vm_is_stack_for_task(t, vma))
-                               return t;
-               }
-       }
-
-       return NULL;
-}
-
 #if defined(CONFIG_MMU) && !defined(HAVE_ARCH_PICK_MMAP_LAYOUT)
 void arch_pick_mmap_layout(struct mm_struct *mm)
 {