[merged mm-hotfixes-stable] maple_tree-remove-extra-smp_wmb-from-mas_dead_leaves.patch removed from -mm tree

[merged mm-hotfixes-stable] maple_tree-remove-extra-smp_wmb-from-mas_dead_leaves.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: maple_tree: remove extra smp_wmb() from mas_dead_leaves()
has been removed from the -mm tree.  Its filename was
     maple_tree-remove-extra-smp_wmb-from-mas_dead_leaves.patch

This patch was dropped because it was merged into the mm-hotfixes-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Liam Howlett <Liam.Howlett@oracle.com>
Subject: maple_tree: remove extra smp_wmb() from mas_dead_leaves()
Date: Mon, 27 Feb 2023 09:36:03 -0800

The call to mte_set_dead_node() before the smp_wmb() already calls
smp_wmb() so this is not needed.  This is an optimization for the RCU mode
of the maple tree.

Link: https://lkml.kernel.org/r/20230227173632.3292573-5-surenb@google.com
Fixes: 54a611b60590 ("Maple Tree: add new data structure")
Signed-off-by: Liam Howlett <Liam.Howlett@oracle.com>
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 lib/maple_tree.c |    1 -
 1 file changed, 1 deletion(-)

--- a/lib/maple_tree.c~maple_tree-remove-extra-smp_wmb-from-mas_dead_leaves
+++ a/lib/maple_tree.c
@@ -5503,7 +5503,6 @@ unsigned char mas_dead_leaves(struct ma_
 			break;
 
 		mte_set_node_dead(entry);
-		smp_wmb(); /* Needed for RCU */
 		node->type = type;
 		rcu_assign_pointer(slots[offset], node);
 	}
_

Patches currently in -mm which might be from Liam.Howlett@oracle.com are