From 52ae298e3e5c9be5bb95e1c6d9199e5210f2a156 Mon Sep 17 00:00:00 2001
From: Mateusz Guzik <mjguzik@gmail.com>
Date: Tue, 22 Aug 2023 00:51:45 +0200
Subject: [PATCH] maple_tree: shrink struct maple_tree
Git-commit: 52ae298e3e5c9be5bb95e1c6d9199e5210f2a156
Patch-mainline: v6.6-rc1
References: bsc#1219558

Pack the members of struct maple_tree to avoid holes on 64-bit.  The size
shrinks from 24 to 16 bytes which will save eight bytes in every structure
which embeds it.

[willy@infradead.org: changelog alterations]
Link: https://lkml.kernel.org/r/20230821225145.2169848-1-mjguzik@gmail.com
Signed-off-by: Mateusz Guzik <mjguzik@gmail.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 include/linux/maple_tree.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/maple_tree.h b/include/linux/maple_tree.h
index c962af188681..e41c70ac7744 100644
--- a/include/linux/maple_tree.h
+++ b/include/linux/maple_tree.h
@@ -220,8 +220,8 @@ struct maple_tree {
 		spinlock_t	ma_lock;
 		lockdep_map_p	ma_external_lock;
 	};
-	void __rcu      *ma_root;
 	unsigned int	ma_flags;
+	void __rcu      *ma_root;
 };
 
 /**
-- 
2.35.3