Re: [PATCH v2] read-cache: free threaded memory pool

> From: Derrick Stolee <stolee@gmail.com>
> 
> In load_cache_entries_threaded(), each thread allocates its own memory
> pool. This pool needs to be cleaned up while closing the threads down,
> or it will be leaked.
> 
> This ce_mem_pool pointer could theoretically be converted to an inline
> copy of the struct, but the use of a pointer helps with existing lazy-
> initialization logic. Adjusting that behavior only to avoid this pointer
> would be a much bigger change.