BTREE_PRIO
b->prio != BTREE_PRIO &&
b->prio = BTREE_PRIO;
b->prio = BTREE_PRIO;
else if (!level && b->prio == BTREE_PRIO)
BUG_ON(PTR_BUCKET(b->c, &b->key, i)->prio != BTREE_PRIO);
g->prio != BTREE_PRIO ||
if (g->prio == BTREE_PRIO)
*cached == BTREE_PRIO) {