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-rw-r--r--mm/ksm.c19
1 files changed, 9 insertions, 10 deletions
diff --git a/mm/ksm.c b/mm/ksm.c
index c067e8d..c059ca1c9 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -1342,16 +1342,6 @@ struct rmap_item *unstable_tree_search_insert(struct rmap_item *rmap_item,
return NULL;
}
- /*
- * If tree_page has been migrated to another NUMA node, it
- * will be flushed out and put into the right unstable tree
- * next time: only merge with it if merge_across_nodes.
- */
- if (!ksm_merge_across_nodes && page_to_nid(tree_page) != nid) {
- put_page(tree_page);
- return NULL;
- }
-
ret = memcmp_pages(page, tree_page);
parent = *new;
@@ -1361,6 +1351,15 @@ struct rmap_item *unstable_tree_search_insert(struct rmap_item *rmap_item,
} else if (ret > 0) {
put_page(tree_page);
new = &parent->rb_right;
+ } else if (!ksm_merge_across_nodes &&
+ page_to_nid(tree_page) != nid) {
+ /*
+ * If tree_page has been migrated to another NUMA node,
+ * it will be flushed out and put in the right unstable
+ * tree next time: only merge with it when across_nodes.
+ */
+ put_page(tree_page);
+ return NULL;
} else {
*tree_pagep = tree_page;
return tree_rmap_item;
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