linux-kernel - [PATCH] rbd: constify device

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Message-Id: <1486795478-16655-1-git-send-email-bhumirks@gmail.com>
Date:   Sat, 11 Feb 2017 12:14:38 +0530
From:   Bhumika Goyal <bhumirks@...il.com>
To:     julia.lawall@...6.fr, idryomov@...il.com, sage@...hat.com,
        elder@...nel.org, ceph-devel@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Bhumika Goyal <bhumirks@...il.com>
Subject: [PATCH] rbd: constify device_type structure

Declare device_type structure as const as it is only stored in the
type field of a device structure. This field is of type const, so add
const to the declaration of device_type structure.

File size before:
   text	   data	    bss	    dec	    hex	filename
  61546	  11610	    208	  73364	  11e94	drivers/block/rbd.o

File size after:
   text	   data	    bss	    dec	    hex	filename
  61610	  11578	    208	  73396	  11eb4	drivers/block/rbd.o

Signed-off-by: Bhumika Goyal <bhumirks@...il.com>
---
 drivers/block/rbd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 36d2b9f..dfc708b 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -4779,7 +4779,7 @@ static ssize_t rbd_image_refresh(struct device *dev,
 
 static void rbd_dev_release(struct device *dev);
 
-static struct device_type rbd_device_type = {
+static const struct device_type rbd_device_type = {
 	.name		= "rbd",
 	.groups		= rbd_attr_groups,
 	.release	= rbd_dev_release,
-- 
1.9.1