linux-kernel - [PATCH] mm/swap_state: Constify static struct attribute

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Message-Id: <20210201233254.91809-1-rikard.falkeborn@gmail.com>
Date:   Tue,  2 Feb 2021 00:32:54 +0100
From:   Rikard Falkeborn <rikard.falkeborn@...il.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Huang Ying <ying.huang@...el.com>,
        Rikard Falkeborn <rikard.falkeborn@...il.com>
Subject: [PATCH] mm/swap_state: Constify static struct attribute_group

The only usage of swap_attr_group is to pass its address to
sysfs_create_group() which takes a pointer to const attribute_group.
Make it const to allow the compiler to put it in read-only memory.

Signed-off-by: Rikard Falkeborn <rikard.falkeborn@...il.com>
---
 mm/swap_state.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/swap_state.c b/mm/swap_state.c
index d0d417efeecc..3cdee7b11da9 100644
--- a/mm/swap_state.c
+++ b/mm/swap_state.c
@@ -901,7 +901,7 @@ static struct attribute *swap_attrs[] = {
 	NULL,
 };
 
-static struct attribute_group swap_attr_group = {
+static const struct attribute_group swap_attr_group = {
 	.attrs = swap_attrs,
 };
 
-- 
2.30.0