I915_VMA_USERFAULT_BIT
return __test_and_set_bit(I915_VMA_USERFAULT_BIT, &vma->flags);
return __clear_bit(I915_VMA_USERFAULT_BIT, &vma->flags);
return test_bit(I915_VMA_USERFAULT_BIT, &vma->flags);
#define I915_VMA_USERFAULT BIT(I915_VMA_USERFAULT_BIT)