GLF_VERIFY_DELETE
clear_bit(GLF_VERIFY_DELETE, &gl->gl_flags);
if (test_bit(GLF_VERIFY_DELETE, gflags))
if (test_and_set_bit(GLF_VERIFY_DELETE, &gl->gl_flags))
bool verify_delete = test_and_clear_bit(GLF_VERIFY_DELETE, &gl->gl_flags);
{(1UL << GLF_VERIFY_DELETE), "E" }, \