HAMMER_REFS_WANTED
HAMMER_REFS_WANTED | \
nlv = (lv | HAMMER_REFS_WANTED);
if (lv & HAMMER_REFS_WANTED)
nlv = lv | HAMMER_REFS_WANTED;
nlv = lv & ~(HAMMER_REFS_LOCKED | HAMMER_REFS_WANTED);
if (lv & HAMMER_REFS_WANTED)
nlv = lv | HAMMER_REFS_WANTED;
nlv = lv & ~(HAMMER_REFS_LOCKED | HAMMER_REFS_WANTED);
if (lv & HAMMER_REFS_WANTED)