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