mempool_resize — resize an existing memory pool
| int mempool_resize ( | mempool_t * pool, | 
| int new_min_nr ); | 
pool
     pointer to the memory pool which was allocated via
     mempool_create.
    
new_min_nrthe new minimum number of elements guaranteed to be allocated for this pool.
   This function shrinks/grows the pool. In the case of growing,
   it cannot be guaranteed that the pool will be grown to the new
   size immediately, but new mempool_free calls will refill it.
   This function may sleep.
   
   Note, the caller must guarantee that no mempool_destroy is called
   while this function is running. mempool_alloc & mempool_free
   might be called (eg. from IRQ contexts) while this function executes.