struct shrink_control *sc);
static unsigned long i915_gem_purge(struct drm_i915_private *dev_priv, long target);
static unsigned long i915_gem_shrink_all(struct drm_i915_private *dev_priv);
-static void i915_gem_object_truncate(struct drm_i915_gem_object *obj);
static bool cpu_cache_is_coherent(struct drm_device *dev,
enum i915_cache_level level)
return i915_gem_mmap_gtt(file, dev, args->handle, &args->offset);
}
+static inline int
+i915_gem_object_is_purgeable(struct drm_i915_gem_object *obj)
+{
+ return obj->madv == I915_MADV_DONTNEED;
+}
+
/* Immediately discard the backing storage */
static void
i915_gem_object_truncate(struct drm_i915_gem_object *obj)
{
- struct inode *inode;
-
i915_gem_object_free_mmap_offset(obj);
if (obj->base.filp == NULL)
* To do this we must instruct the shmfs to drop all of its
* backing pages, *now*.
*/
- inode = file_inode(obj->base.filp);
- shmem_truncate_range(inode, 0, (loff_t)-1);
-
+ shmem_truncate_range(file_inode(obj->base.filp), 0, (loff_t)-1);
obj->madv = __I915_MADV_PURGED;
}
-static inline int
-i915_gem_object_is_purgeable(struct drm_i915_gem_object *obj)
+/* Try to discard unwanted pages */
+static void
+i915_gem_object_invalidate(struct drm_i915_gem_object *obj)
{
- return obj->madv == I915_MADV_DONTNEED;
+ struct address_space *mapping;
+
+ switch (obj->madv) {
+ case I915_MADV_DONTNEED:
+ i915_gem_object_truncate(obj);
+ case __I915_MADV_PURGED:
+ return;
+ }
+
+ if (obj->base.filp == NULL)
+ return;
+
+ mapping = file_inode(obj->base.filp)->i_mapping,
+ invalidate_mapping_pages(mapping, 0, (loff_t)-1);
}
static void
ops->put_pages(obj);
obj->pages = NULL;
- if (i915_gem_object_is_purgeable(obj))
- i915_gem_object_truncate(obj);
+ i915_gem_object_invalidate(obj);
return 0;
}
if (WARN_ON(obj->pages_pin_count))
obj->pages_pin_count = 0;
+ if (obj->madv != __I915_MADV_PURGED)
+ obj->madv = I915_MADV_DONTNEED;
i915_gem_object_put_pages(obj);
i915_gem_object_free_mmap_offset(obj);
i915_gem_object_release_stolen(obj);