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

Link: http://lkml.kernel.org/r/cab4e59b4918db3ed2ec77073a4cb310c4429ef5.1498808026.git.arvind.yadav.cs@gmail.com
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Cc: Mark Fasheh <mfasheh@versity.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/ocfs2/stackglue.c b/fs/ocfs2/stackglue.c
index 820359096c7aa8df5b76e2a0c1404ce7f9d0337d..d6c350ba25b96ec9886cdc11b46a94fb17769261 100644 (file)
--- a/fs/ocfs2/stackglue.c
+++ b/fs/ocfs2/stackglue.c
@@ -631,7 +631,7 @@ static struct attribute *ocfs2_attrs[] = {
        NULL,
 };
 
-static struct attribute_group ocfs2_attr_group = {
+static const struct attribute_group ocfs2_attr_group = {
        .attrs = ocfs2_attrs,
 };