HAMMER_NODE_NEEDSCRC
if ((node->flags & HAMMER_NODE_NEEDSCRC) == 0) {
node->flags |= HAMMER_NODE_NEEDSCRC;
if ((node->flags & HAMMER_NODE_NEEDSCRC) == 0)
node->flags &= ~HAMMER_NODE_NEEDSCRC;
if (node->flags & HAMMER_NODE_NEEDSCRC) {
KKASSERT((node->flags & HAMMER_NODE_NEEDSCRC) == 0);
KKASSERT((node->flags & HAMMER_NODE_NEEDSCRC) == 0);