[Intel-xe] [PATCH v2 2/2] drm/xe: Properly remove the vma from the vm::notifer::rebind_list when destroyed

[Thomas Hellström]

If a vma was destroyed with the bo evicted, it might happen that we forget
to remove it from the notifer::rebind_list. Fix to make sure that really
happens.

v2:
- Remove an unnecessarily verbose comment how to avoid taking a lock.
  (Matthew Brost)

Signed-off-by: Thomas Hellström <thomas.hellstrom at linux.intel.com>
Reviewed-by: Matthew Brost <matthew.brost at intel.com>
---
 drivers/gpu/drm/xe/xe_vm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c
index 5f93d78c2e58..2aa5bf9cfee1 100644
--- a/drivers/gpu/drm/xe/xe_vm.c
+++ b/drivers/gpu/drm/xe/xe_vm.c
@@ -978,6 +978,9 @@ static void xe_vma_destroy(struct xe_vma *vma, struct dma_fence *fence)
 	} else {
 		xe_bo_assert_held(vma->bo);
 		list_del(&vma->bo_link);
+		spin_lock(&vm->notifier.list_lock);
+		list_del(&vma->notifier.rebind_link);
+		spin_unlock(&vm->notifier.list_lock);
 		if (!vma->bo->vm)
 			vm_remove_extobj(vma);
 	}
-- 
2.39.2