mm: add new mmgrab() helper

[mirror_ubuntu-artful-kernel.git] / drivers / gpu / drm / i915 / i915_gem_userptr.c

diff --git a/drivers/gpu/drm/i915/i915_gem_userptr.c b/drivers/gpu/drm/i915/i915_gem_userptr.c
index 6a8fa085b74edd91e696c167fff1bd8747042d6f..65802d93fdc13cfb3351dc4d577f0dbd0e4c9a4f 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem_userptr.c
+++ b/drivers/gpu/drm/i915/i915_gem_userptr.c
@@ -334,7 +334,7 @@ i915_gem_userptr_init__mm_struct(struct drm_i915_gem_object *obj)
                mm->i915 = to_i915(obj->base.dev);
 
                mm->mm = current->mm;
-               atomic_inc(&current->mm->mm_count);
+               mmgrab(current->mm);
 
                mm->mn = NULL;