[merged] ksm-remove-redundant-vm_bug_on_page-on-stable_tree_search.patch removed from -mm tree

[merged] ksm-remove-redundant-vm_bug_on_page-on-stable_tree_search.patch removed from -mm tree

[akpm]

The patch titled
     Subject: ksm: remove redundant VM_BUG_ON_PAGE() on stable_tree_search()
has been removed from the -mm tree.  Its filename was
     ksm-remove-redundant-vm_bug_on_page-on-stable_tree_search.patch

This patch was dropped because it was merged into mainline or a subsystem tree

------------------------------------------------------
From: Miaohe Lin <linmiaohe@huawei.com>
Subject: ksm: remove redundant VM_BUG_ON_PAGE() on stable_tree_search()

Patch series "Cleanup and fixup for ksm".

This series contains cleanups to remove unnecessary VM_BUG_ON_PAGE and
dedicated macro KSM_FLAG_MASK.  Also this fixes potential missing
rmap_item for stable_node which would result in failed rmap_walk_ksm(). 
More details can be found in the respective changelogs.


This patch (of 4):

The same VM_BUG_ON_PAGE() check is already done in the callee.  Remove
these extra caller one to simplify code slightly.

Link: https://lkml.kernel.org/r/20210330140228.45635-1-linmiaohe@huawei.com
Link: https://lkml.kernel.org/r/20210330140228.45635-2-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>
---

 mm/ksm.c |    2 --
 1 file changed, 2 deletions(-)

--- a/mm/ksm.c~ksm-remove-redundant-vm_bug_on_page-on-stable_tree_search
+++ a/mm/ksm.c
@@ -1771,7 +1771,6 @@ chain_append:
 	 * stable_node_dup is the dup to replace.
 	 */
 	if (stable_node_dup == stable_node) {
-		VM_BUG_ON(is_stable_node_chain(stable_node_dup));
 		VM_BUG_ON(is_stable_node_dup(stable_node_dup));
 		/* chain is missing so create it */
 		stable_node = alloc_stable_node_chain(stable_node_dup,
@@ -1785,7 +1784,6 @@ chain_append:
 	 * of the current nid for this page
 	 * content.
 	 */
-	VM_BUG_ON(!is_stable_node_chain(stable_node));
 	VM_BUG_ON(!is_stable_node_dup(stable_node_dup));
 	VM_BUG_ON(page_node->head != &migrate_nodes);
 	list_del(&page_node->list);
_

Patches currently in -mm which might be from linmiaohe@huawei.com are