linux-kernel - [PATCH] ocfs2: constify attribute

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Message-Id: <cab4e59b4918db3ed2ec77073a4cb310c4429ef5.1498808026.git.arvind.yadav.cs@gmail.com>
Date:   Fri, 30 Jun 2017 13:23:09 +0530
From:   Arvind Yadav <arvind.yadav.cs@...il.com>
To:     mfasheh@...sity.com, akpm@...ux-foundation.org, jlbec@...lplan.org
Cc:     ocfs2-devel@....oracle.com, linux-kernel@...r.kernel.org
Subject: [PATCH] ocfs2: constify attribute_group structures.

attribute_groups are not supposed to change at runtime. All functions
working with attribute_groups provided by <linux/sysfs.h> work with const
attribute_group. So mark the non-const structs as const.

File size before:
   text	   data	    bss	    dec	    hex	filename
   4402	   1088	     38	   5528	   1598	fs/ocfs2/stackglue.o

File size After adding 'const':
   text	   data	    bss	    dec	    hex	filename
   4442	   1024	     38	   5504	   1580	fs/ocfs2/stackglue.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
---
 fs/ocfs2/stackglue.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ocfs2/stackglue.c b/fs/ocfs2/stackglue.c
index 8203590..d6c350b 100644
--- a/fs/ocfs2/stackglue.c
+++ b/fs/ocfs2/stackglue.c
@@ -631,7 +631,7 @@ static ssize_t ocfs2_dlm_recover_show(struct kobject *kobj,
 	NULL,
 };

-static struct attribute_group ocfs2_attr_group = {
+static const struct attribute_group ocfs2_attr_group = {
 	.attrs = ocfs2_attrs,
 };

-- 
1.9.1