2017-08-02 22:59:51

by Amitoj Kaur Chawla

[permalink] [raw]
Subject: [PATCH] loop: constify attribute_group structure

Functions working with attribute_groups provided by <linux/sysfs.h>
work with const attribute_group. These attribute_group structures do not
change at runtime so mark them as const.

File size before:
text data bss dec hex filename
27981 5489 480 33950 849e drivers/block/loop.o

File size after:
text data bss dec hex filename
28320 5421 480 34221 85ad drivers/block/loop.o

This change was made with the help of Coccinelle.

Signed-off-by: Amitoj Kaur Chawla <[email protected]>
---
drivers/block/loop.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index ef83349..a7f35a0 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -798,7 +798,7 @@ static struct attribute *loop_attrs[] = {
NULL,
};

-static struct attribute_group loop_attribute_group = {
+static const struct attribute_group loop_attribute_group = {
.name = "loop",
.attrs= loop_attrs,
};
--
2.7.4