[PATCH RFC 16/35] mm/pagewalk: drop nth_page() usage within folio in folio_walk_start()
From: David Hildenbrand <hidden>
Date: 2025-08-21 20:07:55
Also in:
dri-devel, intel-gfx, io-uring, kvm, linux-arm-kernel, linux-crypto, linux-ide, linux-iommu, linux-kselftest, linux-mips, linux-mm, linux-mmc, linux-riscv, linux-s390, linux-scsi, lkml, virtualization
Subsystem:
memory management, memory management - core, the rest · Maintainers:
Andrew Morton, David Hildenbrand, Linus Torvalds
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 <redacted> --- 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