+ lib-rbtree-avoid-pointless-rb_node-alignment.patch added to -mm tree

+ lib-rbtree-avoid-pointless-rb_node-alignment.patch added to -mm tree

[akpm]

The patch titled
     Subject: include/linux/rbtree.h: avoid pointless rb_node alignment
has been added to the -mm tree.  Its filename is
     lib-rbtree-avoid-pointless-rb_node-alignment.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/lib-rbtree-avoid-pointless-rb_node-alignment.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/lib-rbtree-avoid-pointless-rb_node-alignment.patch

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------------------------------------------------------
From: Davidlohr Bueso <dave@stgolabs.net>
Subject: include/linux/rbtree.h: avoid pointless rb_node alignment

Now that Linux no longer supports the CRIS architecture, we can drop this
fishy alignment.  Apparently this was need to prevent misalignments in
struct address_space.

Link: http://lkml.kernel.org/r/20200110215429.30360-1-dave@stgolabs.net
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/rbtree.h |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/include/linux/rbtree.h~lib-rbtree-avoid-pointless-rb_node-alignment
+++ a/include/linux/rbtree.h
@@ -25,8 +25,7 @@ struct rb_node {
 	unsigned long  __rb_parent_color;
 	struct rb_node *rb_right;
 	struct rb_node *rb_left;
-} __attribute__((aligned(sizeof(long))));
-    /* The alignment might seem pointless, but allegedly CRIS needs it */
+};
 
 struct rb_root {
 	struct rb_node *rb_node;
_

Patches currently in -mm which might be from dave@stgolabs.net are

lib-rbtree-avoid-pointless-rb_node-alignment.patch
ipc-mqueuec-remove-duplicated-code.patch