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Howlett" , 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, 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, 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 v2 17/37] mm/pagewalk: drop nth_page() usage within folio in folio_walk_start() Date: Mon, 1 Sep 2025 17:03:38 +0200 Message-ID: <20250901150359.867252-18-david@redhat.com> In-Reply-To: <20250901150359.867252-1-david@redhat.com> References: <20250901150359.867252-1-david@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.93 X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 3712D1C0010 X-Stat-Signature: enazhk9r1i1xzajo1rduj4d4rfibd3ja X-HE-Tag: 1756739349-241093 X-HE-Meta: U2FsdGVkX181NeYAoqGIcV0mIgzD9ihdXNqHO2+G5i98MihMB7A0r5ir27y12kwdvkUOv6XZ+R5r9dDXDb3kUJGO8RZJJVnSmuIb8GNathqKLhY9TV9CgcKw6zNS/3QK+tfhqxcgenu8nOffBJ1cNvNyscjPRN2QWC4tJAD4oh/3STteCfctYgs2BVV5mnwDYotZwK/19372gLFS5c/7JQxK5jgCTsmkG0JcZWvbFFcu8F0IpHFr/4yL7mauv+TEuTWRumvsOEu1QGdk5w0dMU9DFjwIsSr08Ro7JpwZL6+iQrkqVxgt1IbpU7s8emKFlymtuefZfb+MCC4OHq6aJzq5EefkDO+oXrELY40KHjLFRJROxZCLLYiDInojBOqOIW2uyPTlDFvKDyWMAgypZealDpxHhx4roDQY2HRWNvD4+/LrG/deVACrANvL+2YSNM90ZtigKsispZac6g/Xo4xutaFLQSmSef6dieQA61DSRzWB+o0De3rrMebVEgx6O/RNVQh8/99aVjXh/dwP0mHoORu8x+W+RGjgvNKBOmqUy//IrzeKObR+lUsnHz8SkRIK3vDDZqpHL5yQ3kKSqrCkicQaetJ+SUpVYkk9qg/uqg4+QV9sr5n5Qefjw7JD/MS02zIizceLPSij1t3Eb6CTfZNO5PbUp+tnwDaX5O8lipsfjMd5ZxFvGbOTWvygLPYoV50OectjkZpKv2rXJjPnK3niwiE7wntI11o8U+ftfq5lRl/1EU1gPSN1/gCfRyxFmZ/SYr9rsF5TmWvDR2f3HVWRSyqpOySReCI51TOTpAi2psnZbBi/EJqjQI8boRNGjojW+8Edop2n7xV7tXG7V7VWRgJynQDrPQhU0Aj0q6mS02NO0rXlZzDuT89gPWVZbikhzDLiHjLSOpFGSi5/BuYRjgha9IJStNhbglR6sXvw3vWfUUXrZrTC1f04U9GSJWUrH2dfJxkvpio gZgEYg9u zvCotzWuE/siGZC6saFW6lipNpk63rJU1AotEn1GU/RXs0+pwoSqJ8SVmmZb8g6o7amI81XHBGXvKIT9oM7cmBKnhJhhYL35iFekdMc6QWhKivoGUC1e7XZYPaI2HlRq1KcZ1oRw1KQmmeQJrS9LUSrRlTsy9WiX/+kHO7UvcrrOZrURS5n4/TxqkrTAW2DoeMYTqAic62mGgKfl/19eqOEzLKwHqAlt0o6nksKZztRSCwQK4WxhBJ3BGRPuxkgx5cMSMS1Umnfym9HOUYqtgeAe/Rz+97Fav/APGmKjWBZ7jpGA1YI8Wu+k1IhMj/vhRjspCxLLmcfp3/UaPwFKKfSaRdTR9C2cX/ktdgVrhzdPelGhfvp4eQZNBRw9DRM0ciLyU0xEC6egoB02C+y8aSqDTIw== 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(). Reviewed-by: Lorenzo Stoakes Reviewed-by: Liam R. Howlett 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