On 10/5/21 20:24, Matthew Auld wrote:
The comment here is no longer accurate, since the current shrinker code
requires a full ref before touching any objects. Also unset_pages()
should already do the required make_unshrinkable() for us, if needed,
which is also nicely balanced with set_pages().
Signed-off-by: Matthew Auld <matthew.auld@xxxxxxxxx>
Cc: Thomas Hellström <thomas.hellstrom@xxxxxxxxxxxxxxx>
Reviewed-by: Thomas Hellström <thomas.hellstrom@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/gem/i915_gem_object.c | 9 ---------
1 file changed, 9 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.c b/drivers/gpu/drm/i915/gem/i915_gem_object.c
index 76ce6a1500bc..1dc3c1940c32 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.c
@@ -337,15 +337,6 @@ static void i915_gem_free_object(struct drm_gem_object *gem_obj)
*/
atomic_inc(&i915->mm.free_count);
- /*
- * This serializes freeing with the shrinker. Since the free
- * is delayed, first by RCU then by the workqueue, we want the
- * shrinker to be able to free pages of unreferenced objects,
- * or else we may oom whilst there are plenty of deferred
- * freed objects.
- */
- i915_gem_object_make_unshrinkable(obj);
-
/*
* Since we require blocking on struct_mutex to unbind the freed
* object from the GPU before releasing resources back to the
