linux-kernel - [PATCH 04/31] Constify struct block_device

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Date:	Fri, 04 Dec 2009 23:12:00 +0100
From:	Emese Revfy <re.emese@...il.com>
To:	gregkh@...e.de, torvalds@...ux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 04/31] Constify struct block_device_operations for 2.6.32
 v1

From: Emese Revfy <re.emese@...il.com>

Constify struct block_device_operations.

Signed-off-by: Emese Revfy <re.emese@...il.com>
---
 drivers/staging/dst/dcore.c     |    2 +-
 drivers/staging/hv/blkvsc_drv.c |    2 +-
 include/linux/blkdev.h          |   22 +++++++++++-----------
 3 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/drivers/staging/dst/dcore.c b/drivers/staging/dst/dcore.c
index c24e4e0..4f62b69 100644
--- a/drivers/staging/dst/dcore.c
+++ b/drivers/staging/dst/dcore.c
@@ -149,7 +149,7 @@ static int dst_bdev_release(struct gendisk *disk, fmode_t mode)
 	return 0;
 }
 
-static struct block_device_operations dst_blk_ops = {
+static const struct block_device_operations dst_blk_ops = {
 	.open		= dst_bdev_open,
 	.release	= dst_bdev_release,
 	.owner		= THIS_MODULE,
diff --git a/drivers/staging/hv/blkvsc_drv.c b/drivers/staging/hv/blkvsc_drv.c
index 62b2828..0a47695 100644
--- a/drivers/staging/hv/blkvsc_drv.c
+++ b/drivers/staging/hv/blkvsc_drv.c
@@ -153,7 +153,7 @@ static int blkvsc_ringbuffer_size = BLKVSC_RING_BUFFER_SIZE;
 /* The one and only one */
 static struct blkvsc_driver_context g_blkvsc_drv;
 
-static struct block_device_operations block_ops = {
+static const struct block_device_operations block_ops = {
 	.owner = THIS_MODULE,
 	.open = blkvsc_open,
 	.release = blkvsc_release,
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 221cecd..82f20f0 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1253,19 +1253,19 @@ static inline int blk_integrity_rq(struct request *rq)
 #endif /* CONFIG_BLK_DEV_INTEGRITY */
 
 struct block_device_operations {
-	int (*open) (struct block_device *, fmode_t);
-	int (*release) (struct gendisk *, fmode_t);
-	int (*locked_ioctl) (struct block_device *, fmode_t, unsigned, unsigned long);
-	int (*ioctl) (struct block_device *, fmode_t, unsigned, unsigned long);
-	int (*compat_ioctl) (struct block_device *, fmode_t, unsigned, unsigned long);
-	int (*direct_access) (struct block_device *, sector_t,
+	int (* const open) (struct block_device *, fmode_t);
+	int (* const release) (struct gendisk *, fmode_t);
+	int (* const locked_ioctl) (struct block_device *, fmode_t, unsigned, unsigned long);
+	int (* const ioctl) (struct block_device *, fmode_t, unsigned, unsigned long);
+	int (* const compat_ioctl) (struct block_device *, fmode_t, unsigned, unsigned long);
+	int (* const direct_access) (struct block_device *, sector_t,
 						void **, unsigned long *);
-	int (*media_changed) (struct gendisk *);
-	unsigned long long (*set_capacity) (struct gendisk *,
+	int (* const media_changed) (struct gendisk *);
+	unsigned long long (* const set_capacity) (struct gendisk *,
 						unsigned long long);
-	int (*revalidate_disk) (struct gendisk *);
-	int (*getgeo)(struct block_device *, struct hd_geometry *);
-	struct module *owner;
+	int (* const revalidate_disk) (struct gendisk *);
+	int (*const getgeo)(struct block_device *, struct hd_geometry *);
+	const struct module *owner;
 };
 
 extern int __blkdev_driver_ioctl(struct block_device *, fmode_t, unsigned int,

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