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Message-ID: <20230817092556.57a7e82e@kernel.org> Date: Thu, 17 Aug 2023 09:25:56 -0700 From: Jakub Kicinski <kuba@...nel.org> To: Ilias Apalodimas <ilias.apalodimas@...aro.org> Cc: netdev@...r.kernel.org, hawk@...nel.org, aleksander.lobakin@...el.com, linyunsheng@...wei.com, almasrymina@...gle.com Subject: Re: [RFC net-next 03/13] net: page_pool: factor out uninit On Thu, 17 Aug 2023 10:40:09 +0300 Ilias Apalodimas wrote: > > +static void page_pool_uninit(struct page_pool *pool) > > +{ > > + ptr_ring_cleanup(&pool->ring, NULL); > > + > > + if (pool->p.flags & PP_FLAG_DMA_MAP) > > + put_device(pool->p.dev); > > + > > +#ifdef CONFIG_PAGE_POOL_STATS > > + free_percpu(pool->recycle_stats); > > +#endif > > +} > > I am not sure I am following the reasoning here. The only extra thing > page_pool_free() does is disconnect the pool. So I assume no one will > call page_pool_uninit() directly. Do you expect page_pool_free() to > grow in the future, so factoring out the uninit makes the code easier > to read? I'm calling it from the unwind patch of page_pool_create() in the next patch, because I'm adding another setup state after page_pool_init(). I can't put the free into _uninit() because on the unwind path of _create() that's an individual step.
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