The macro KSM_FLAG_MASK is used in rmap_walk_ksm() only. So we can replace
~KSM_FLAG_MASK with PAGE_MASK to remove this dedicated macro and make code
more consistent because PAGE_MASK is used elsewhere in this file.
Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
---
mm/ksm.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/mm/ksm.c b/mm/ksm.c
index 5650a282da3e..f9ca6d94bf7f 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -215,8 +215,6 @@ struct rmap_item {
#define SEQNR_MASK 0x0ff /* low bits of unstable tree seqnr */
#define UNSTABLE_FLAG 0x100 /* is a node of the unstable tree */
#define STABLE_FLAG 0x200 /* is listed from the stable tree */
-#define KSM_FLAG_MASK (SEQNR_MASK|UNSTABLE_FLAG|STABLE_FLAG)
- /* to mask all the flags */
/* The stable and unstable tree heads */
static struct rb_root one_stable_tree[1] = { RB_ROOT };
@@ -2631,7 +2629,7 @@ void rmap_walk_ksm(struct page *page, struct rmap_walk_control *rwc)
vma = vmac->vma;
/* Ignore the stable/unstable/sqnr flags */
- addr = rmap_item->address & ~KSM_FLAG_MASK;
+ addr = rmap_item->address & PAGE_MASK;
if (addr < vma->vm_start || addr >= vma->vm_end)
continue;
--
2.19.1
