Re: [PATCH v3] page_pool: add a comment explaining the fragment counter usage

[Jakub Kicinski]

On Sat, 18 Feb 2023 00:21:30 +0200 Ilias Apalodimas wrote:
> When reading the page_pool code the first impression is that keeping
> two separate counters, one being the page refcnt and the other being
> fragment pp_frag_count, is counter-intuitive.
> 
> However without that fragment counter we don't know when to reliably
> destroy or sync the outstanding DMA mappings.  So let's add a comment
> explaining this part.

I discussed with Paolo off-list, since it's just a comment change 
I'll push it in.