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Message-ID: <31224f51-1457-4a71-a5b4-880dfcbfa659@gmail.com> Date: Thu, 5 Jun 2025 11:45:20 +0100 From: Pavel Begunkov <asml.silence@...il.com> To: Byungchul Park <byungchul@...com>, willy@...radead.org, netdev@...r.kernel.org Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org, kernel_team@...ynix.com, kuba@...nel.org, almasrymina@...gle.com, ilias.apalodimas@...aro.org, harry.yoo@...cle.com, hawk@...nel.org, akpm@...ux-foundation.org, davem@...emloft.net, john.fastabend@...il.com, andrew+netdev@...n.ch, toke@...hat.com, tariqt@...dia.com, edumazet@...gle.com, pabeni@...hat.com, saeedm@...dia.com, leon@...nel.org, ast@...nel.org, daniel@...earbox.net, david@...hat.com, lorenzo.stoakes@...cle.com, Liam.Howlett@...cle.com, vbabka@...e.cz, rppt@...nel.org, surenb@...gle.com, mhocko@...e.com, horms@...nel.org, linux-rdma@...r.kernel.org, bpf@...r.kernel.org, vishal.moola@...il.com Subject: Re: [RFC v4 14/18] page_pool: make page_pool_get_dma_addr() just wrap page_pool_get_dma_addr_netmem() On 6/4/25 03:52, Byungchul Park wrote: > The page pool members in struct page cannot be removed unless it's not > allowed to access any of them via struct page. > > Do not access 'page->dma_addr' directly in page_pool_get_dma_addr() but > just wrap page_pool_get_dma_addr_netmem() safely. FWIW, it adds small extra cost to the function, but that should be fine Reviewed-by: Pavel Begunkov <asml.silence@...il.com> -- Pavel Begunkov
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