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[2003:d8:2f26:ba00:803:6ec5:9918:6fd]) by smtp.gmail.com with UTF8SMTPSA id ffacd0b85a97d-3c077789d12sm12702699f8f.54.2025.08.21.13.08.23 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 21 Aug 2025 13:08:25 -0700 (PDT) From: David Hildenbrand To: linux-kernel@vger.kernel.org Cc: David Hildenbrand , Alex Dubov , Ulf Hansson , Jesper Nilsson , Lars Persson , 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 28/35] mmc: drop nth_page() usage within SG entry Date: Thu, 21 Aug 2025 22:06:54 +0200 Message-ID: <20250821200701.1329277-29-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: OCtDAODxFWd3cB3ZlXhBZlh7uHA-AwM0H-sR3eTE5yQ_1755806907 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit content-type: text/plain; charset="US-ASCII"; x-default=true X-Rspamd-Server: rspam03 X-Rspam-User: X-Rspamd-Queue-Id: 292EA140005 X-Stat-Signature: n3obmng9okts86mnsncjeaca9bgc6n3a X-HE-Tag: 1755806910-115412 X-HE-Meta: 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 ec0nTJ1H 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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() when iterating pages within a single SG entry, so let's drop the nth_page() usage. Cc: Alex Dubov Cc: Ulf Hansson Cc: Jesper Nilsson Cc: Lars Persson Signed-off-by: David Hildenbrand --- drivers/mmc/host/tifm_sd.c | 4 ++-- drivers/mmc/host/usdhi6rol0.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/mmc/host/tifm_sd.c b/drivers/mmc/host/tifm_sd.c index ac636efd911d3..f1ede2b39b505 100644 --- a/drivers/mmc/host/tifm_sd.c +++ b/drivers/mmc/host/tifm_sd.c @@ -191,7 +191,7 @@ static void tifm_sd_transfer_data(struct tifm_sd *host) } off = sg[host->sg_pos].offset + host->block_pos; - pg = nth_page(sg_page(&sg[host->sg_pos]), off >> PAGE_SHIFT); + pg = sg_page(&sg[host->sg_pos]) + off / PAGE_SIZE; p_off = offset_in_page(off); p_cnt = PAGE_SIZE - p_off; p_cnt = min(p_cnt, cnt); @@ -240,7 +240,7 @@ static void tifm_sd_bounce_block(struct tifm_sd *host, struct mmc_data *r_data) } off = sg[host->sg_pos].offset + host->block_pos; - pg = nth_page(sg_page(&sg[host->sg_pos]), off >> PAGE_SHIFT); + pg = sg_page(&sg[host->sg_pos]) + off / PAGE_SIZE; p_off = offset_in_page(off); p_cnt = PAGE_SIZE - p_off; p_cnt = min(p_cnt, cnt); diff --git a/drivers/mmc/host/usdhi6rol0.c b/drivers/mmc/host/usdhi6rol0.c index 85b49c07918b3..3bccf800339ba 100644 --- a/drivers/mmc/host/usdhi6rol0.c +++ b/drivers/mmc/host/usdhi6rol0.c @@ -323,7 +323,7 @@ static void usdhi6_blk_bounce(struct usdhi6_host *host, host->head_pg.page = host->pg.page; host->head_pg.mapped = host->pg.mapped; - host->pg.page = nth_page(host->pg.page, 1); + host->pg.page = host->pg.page + 1; host->pg.mapped = kmap(host->pg.page); host->blk_page = host->bounce_buf; @@ -503,7 +503,7 @@ static void usdhi6_sg_advance(struct usdhi6_host *host) /* We cannot get here after crossing a page border */ /* Next page in the same SG */ - host->pg.page = nth_page(sg_page(host->sg), host->page_idx); + host->pg.page = sg_page(host->sg) + host->page_idx; host->pg.mapped = kmap(host->pg.page); host->blk_page = host->pg.mapped; -- 2.50.1