From 872ea707511ad43afe202f401ccb8de01e2b2a3b Mon Sep 17 00:00:00 2001 From: Ralph Campbell Date: Thu, 30 Jan 2020 22:14:38 -0800 Subject: [PATCH] mm/migrate: remove useless mask of start address Addresses passed to walk_page_range() callback functions are already page aligned and don't need to be masked with PAGE_MASK. Link: http://lkml.kernel.org/r/20200107211208.24595-2-rcampbell@nvidia.com Signed-off-by: Ralph Campbell Reviewed-by: Christoph Hellwig Cc: Jerome Glisse Cc: John Hubbard Cc: Jason Gunthorpe Cc: Bharata B Rao Cc: Michal Hocko Cc: Chris Down Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/migrate.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/migrate.c b/mm/migrate.c index b3b5d3bf0aab..0c98c9f1d778 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -2156,7 +2156,7 @@ static int migrate_vma_collect_hole(unsigned long start, struct migrate_vma *migrate = walk->private; unsigned long addr; - for (addr = start & PAGE_MASK; addr < end; addr += PAGE_SIZE) { + for (addr = start; addr < end; addr += PAGE_SIZE) { migrate->src[migrate->npages] = MIGRATE_PFN_MIGRATE; migrate->dst[migrate->npages] = 0; migrate->npages++; @@ -2173,7 +2173,7 @@ static int migrate_vma_collect_skip(unsigned long start, struct migrate_vma *migrate = walk->private; unsigned long addr; - for (addr = start & PAGE_MASK; addr < end; addr += PAGE_SIZE) { + for (addr = start; addr < end; addr += PAGE_SIZE) { migrate->dst[migrate->npages] = 0; migrate->src[migrate->npages++] = 0; }