From 52ae298e3e5c9be5bb95e1c6d9199e5210f2a156 Mon Sep 17 00:00:00 2001 From: Mateusz Guzik Date: Tue, 22 Aug 2023 00:51:45 +0200 Subject: [PATCH] maple_tree: shrink struct maple_tree 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 Reviewed-by: Liam R. Howlett Reviewed-by: Matthew Wilcox (Oracle) Signed-off-by: Andrew Morton --- 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; }; /** -- 2.11.0