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authorMiaohe Lin <linmiaohe@huawei.com>2021-05-04 18:37:42 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-05-05 11:27:25 -0700
commitcd7fae26024690c772ec66719735c58a12034088 (patch)
tree915b54f636e978294e1cce00cf9a88ea1c2f3c8d /mm/ksm.c
parent3e96b6a2e9ad929a3230a22f4d64a74671a0720b (diff)
ksm: remove dedicated macro KSM_FLAG_MASK
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. Link: https://lkml.kernel.org/r/20210330140228.45635-4-linmiaohe@huawei.com Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/ksm.c')
-rw-r--r--mm/ksm.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/mm/ksm.c b/mm/ksm.c
index 31dcbd4d3ac9..4b25f642f4ec 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 @@ again:
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;