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Subject[PATCH 1/3] mm/migrate: remove useless mask of start address
Date
Addresses passed to walk_page_range() callback functions are already page
aligned and don't need to be masked with PAGE_MASK.

Signed-off-by: Ralph Campbell <rcampbell@nvidia.com>
---
mm/migrate.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/migrate.c b/mm/migrate.c
index ebe2bf070653..b7f5d9ada429 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -2136,7 +2136,7 @@ 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++;
@@ -2153,7 +2153,7 @@ 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;
}
--
2.20.1
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