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([2a01:4b00:bd21:4f00:7cc6:d3ca:494:116c]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-4255d8a6b40sm25122214f8f.2.2025.10.07.04.12.07 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 07 Oct 2025 04:12:07 -0700 (PDT) Message-ID: <584d69ee-512a-4940-8348-d67f8b57fce1@gmail.com> Date: Tue, 7 Oct 2025 12:13:46 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] io_uring/zcrx: use folio_nr_pages() instead of shift operation To: Pedro Demarchi Gomes , Jens Axboe Cc: io-uring@vger.kernel.org, linux-kernel@vger.kernel.org References: <20251004030733.49304-1-pedrodemargomes@gmail.com> Content-Language: en-US From: Pavel Begunkov In-Reply-To: <20251004030733.49304-1-pedrodemargomes@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 10/4/25 04:07, Pedro Demarchi Gomes wrote: > folio_nr_pages() is a faster helper function to get the number of pages when > NR_PAGES_IN_LARGE_FOLIO is enabled. Looks straightforward, I'll take it into a branch. > Signed-off-by: Pedro Demarchi Gomes > --- > io_uring/zcrx.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/io_uring/zcrx.c b/io_uring/zcrx.c > index e5ff49f3425e..97fda3d65919 100644 > --- a/io_uring/zcrx.c > +++ b/io_uring/zcrx.c > @@ -172,7 +172,7 @@ static unsigned long io_count_account_pages(struct page **pages, unsigned nr_pag > if (folio == last_folio) > continue; > last_folio = folio; > - res += 1UL << folio_order(folio); > + res += folio_nr_pages(folio); > } > return res; > } -- Pavel Begunkov