GLF_TRY_TO_EVICT
clear_bit(GLF_TRY_TO_EVICT, &gl->gl_flags);
if (test_bit(GLF_TRY_TO_EVICT, gflags))
if (test_and_set_bit(GLF_TRY_TO_EVICT, &gl->gl_flags))
if (test_and_clear_bit(GLF_TRY_TO_EVICT, &gl->gl_flags))
{(1UL << GLF_TRY_TO_EVICT), "e" }, \