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[2003:d8:2f26:ba00:803:6ec5:9918:6fd]) by smtp.gmail.com with UTF8SMTPSA id 5b1f17b1804b1-45b4e1d77e0sm22159155e9.0.2025.08.21.13.07.49 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 21 Aug 2025 13:07:50 -0700 (PDT) From: David Hildenbrand To: linux-kernel@vger.kernel.org Cc: David Hildenbrand , Alexander Potapenko , Andrew Morton , Brendan Jackman , Christoph Lameter , Dennis Zhou , Dmitry Vyukov , dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, iommu@lists.linux.dev, io-uring@vger.kernel.org, Jason Gunthorpe , Jens Axboe , Johannes Weiner , John Hubbard , kasan-dev@googlegroups.com, kvm@vger.kernel.org, "Liam R. Howlett" , Linus Torvalds , linux-arm-kernel@axis.com, linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linux-ide@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mips@vger.kernel.org, linux-mmc@vger.kernel.org, linux-mm@kvack.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org, Lorenzo Stoakes , Marco Elver , Marek Szyprowski , Michal Hocko , Mike Rapoport , Muchun Song , netdev@vger.kernel.org, Oscar Salvador , Peter Xu , Robin Murphy , Suren Baghdasaryan , Tejun Heo , virtualization@lists.linux.dev, Vlastimil Babka , wireguard@lists.zx2c4.com, x86@kernel.org, Zi Yan Subject: [PATCH RFC 16/35] mm/pagewalk: drop nth_page() usage within folio in folio_walk_start() Date: Thu, 21 Aug 2025 22:06:42 +0200 Message-ID: <20250821200701.1329277-17-david@redhat.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250821200701.1329277-1-david@redhat.com> References: <20250821200701.1329277-1-david@redhat.com> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: -vx2wsSo0tErWqAFEfUw3vMId2vve86PST_4Kl81xWw_1755806872 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit content-type: text/plain; charset="US-ASCII"; x-default=true X-Rspamd-Queue-Id: 01513140003 X-Stat-Signature: a95n7zbtiep4ziej9zmhhwou7gbq63ha X-Rspam-User: X-Rspamd-Server: rspam06 X-HE-Tag: 1755806874-254977 X-HE-Meta: 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 /INc24Ni 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: It's no longer required to use nth_page() within a folio, so let's just drop the nth_page() in folio_walk_start(). Signed-off-by: David Hildenbrand --- mm/pagewalk.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/pagewalk.c b/mm/pagewalk.c index c6753d370ff4e..9e4225e5fcf5c 100644 --- a/mm/pagewalk.c +++ b/mm/pagewalk.c @@ -1004,7 +1004,7 @@ struct folio *folio_walk_start(struct folio_walk *fw, found: if (expose_page) /* Note: Offset from the mapped page, not the folio start. */ - fw->page = nth_page(page, (addr & (entry_size - 1)) >> PAGE_SHIFT); + fw->page = page + ((addr & (entry_size - 1)) >> PAGE_SHIFT); else fw->page = NULL; fw->ptl = ptl; -- 2.50.1