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

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