drm/i915: Start writeback from the shrinker

[linux-2.6-microblaze.git] / drivers / gpu / drm / i915 / i915_gem.c

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index e546263..a2bf94c 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2143,8 +2143,7 @@ i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data,
 }
 
 /* Immediately discard the backing storage */
-static void
-i915_gem_object_truncate(struct drm_i915_gem_object *obj)
+void __i915_gem_object_truncate(struct drm_i915_gem_object *obj)
 {
        i915_gem_object_free_mmap_offset(obj);
 
@@ -2161,28 +2160,6 @@ i915_gem_object_truncate(struct drm_i915_gem_object *obj)
        obj->mm.pages = ERR_PTR(-EFAULT);
 }
 
-/* Try to discard unwanted pages */
-void __i915_gem_object_invalidate(struct drm_i915_gem_object *obj)
-{
-       struct address_space *mapping;
-
-       lockdep_assert_held(&obj->mm.lock);
-       GEM_BUG_ON(i915_gem_object_has_pages(obj));
-
-       switch (obj->mm.madv) {
-       case I915_MADV_DONTNEED:
-               i915_gem_object_truncate(obj);
-       case __I915_MADV_PURGED:
-               return;
-       }
-
-       if (obj->base.filp == NULL)
-               return;
-
-       mapping = obj->base.filp->f_mapping,
-       invalidate_mapping_pages(mapping, 0, (loff_t)-1);
-}
-
 /*
  * Move pages to appropriate lru and release the pagevec, decrementing the
  * ref count of those pages.
@@ -4023,7 +4000,7 @@ i915_gem_madvise_ioctl(struct drm_device *dev, void *data,
        /* if the object is no longer attached, discard its backing storage */
        if (obj->mm.madv == I915_MADV_DONTNEED &&
            !i915_gem_object_has_pages(obj))
-               i915_gem_object_truncate(obj);
+               __i915_gem_object_truncate(obj);
 
        args->retained = obj->mm.madv != __I915_MADV_PURGED;
        mutex_unlock(&obj->mm.lock);