eCryptfs: 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
   6122	    636	     24	   6782	   1a7e	fs/ecryptfs/main.o

File size After adding 'const':
   text	   data	    bss	    dec	    hex	filename
   6186	    604	     24	   6814	   1a9e	fs/ecryptfs/main.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c
index 1a419c3b8d4f..d0b438eff82d 100644
--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -781,7 +781,7 @@ static struct attribute *attributes[] = {
         NULL,
 };
 
-static struct attribute_group attr_group = {
+static const struct attribute_group attr_group = {
         .attrs = attributes,
 };