Re: [PATCH -v3 3/4] lib, Make gen_pool memory allocator lockless

Mathieu Desnoyers
2011-04-13T21:07:59Z

* Huang Ying (ying.huang@intel.com) wrote:
[...]
> + * rcu_read_lock and rcu_read_unlock is not used int gen_pool_alloc,
> + * gen_pool_free, gen_pool_avail and gen_pool_size etc, because chunks
> + * are only added into pool, not deleted from pool unless the pool
> + * itself is destroyed. If chunk will be deleted from pool,
> + * rcu_read_lock and rcu_read_unlock should be uses in these
> + * functions.

So how do you protect between pool destruction and adding chunks into
the pool ?

Thanks,

Mathieu

--
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.