POOL_DISASSOCIATED
if (pool->flags & POOL_DISASSOCIATED) {
WARN_ON_ONCE(!(pool->flags & POOL_DISASSOCIATED) &&
pool->flags |= POOL_DISASSOCIATED;
pool->flags |= POOL_DISASSOCIATED;
pool->flags &= ~POOL_DISASSOCIATED;
if (!(pool->flags & POOL_DISASSOCIATED))
pool->flags &= ~POOL_DISASSOCIATED;