From 8b5d143c95533aa18ac3b39b82568391a7225a61 Mon Sep 17 00:00:00 2001 From: "Matthew Wilcox (Oracle)" Date: Tue, 17 May 2022 23:36:55 -0400 Subject: [PATCH] block: Simplify read_part_sector() That rather complicated expression is just trying to find the offset of this sector within a page, and there are easier ways to express that. Signed-off-by: Matthew Wilcox (Oracle) --- block/partitions/core.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/block/partitions/core.c b/block/partitions/core.c index a9a51ba..52871fa 100644 --- a/block/partitions/core.c +++ b/block/partitions/core.c @@ -718,8 +718,7 @@ void *read_part_sector(struct parsed_partitions *state, sector_t n, Sector *p) goto out; p->v = page; - return (unsigned char *)page_address(page) + - ((n & ((1 << (PAGE_SHIFT - 9)) - 1)) << SECTOR_SHIFT); + return page_address(page) + offset_in_page(n * SECTOR_SIZE); out: p->v = NULL; return NULL; -- 2.7.4