const: make block_device_operations const

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

56 files changed, 59 insertions, 61 deletions

diff --git a/arch/powerpc/sysdev/axonram.c b/arch/powerpc/sysdev/axonram.c
index a4779912a5ca..88f4ae787832 100644
--- a/arch/powerpc/sysdev/axonram.c
+++ b/arch/powerpc/sysdev/axonram.c
@@ -165,7 +165,7 @@ axon_ram_direct_access(struct block_device *device, sector_t sector,
         return 0;
 }
 
-static struct block_device_operations axon_ram_devops = {
+static const struct block_device_operations axon_ram_devops = {
         .owner          = THIS_MODULE,
         .direct_access  = axon_ram_direct_access
 };
diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 8f05d4d9da12..635d16d90a80 100644
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -106,7 +106,7 @@ static int ubd_getgeo(struct block_device *bdev, struct hd_geometry *geo);
 
 #define MAX_DEV (16)
 
-static struct block_device_operations ubd_blops = {
+static const struct block_device_operations ubd_blops = {
         .owner          = THIS_MODULE,
         .open           = ubd_open,
         .release        = ubd_release,
diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c
index 1e6b7c14f697..8b50af381a8e 100644
--- a/drivers/block/DAC960.c
+++ b/drivers/block/DAC960.c
@@ -152,7 +152,7 @@ static int DAC960_revalidate_disk(struct gendisk *disk)
         return 0;
 }
 
-static struct block_device_operations DAC960_BlockDeviceOperations = {
+static const struct block_device_operations DAC960_BlockDeviceOperations = {
         .owner                  = THIS_MODULE,
         .open                   = DAC960_open,
         .getgeo                 = DAC960_getgeo,
diff --git a/drivers/block/amiflop.c b/drivers/block/amiflop.c
index 2f07b7c99a95..055225839024 100644
--- a/drivers/block/amiflop.c
+++ b/drivers/block/amiflop.c
@@ -1632,7 +1632,7 @@ static int amiga_floppy_change(struct gendisk *disk)
         return 0;
 }
 
-static struct block_device_operations floppy_fops = {
+static const struct block_device_operations floppy_fops = {
         .owner          = THIS_MODULE,
         .open           = floppy_open,
         .release        = floppy_release,
diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c
index b6cd571adbf2..3af97d4da2db 100644
--- a/drivers/block/aoe/aoeblk.c
+++ b/drivers/block/aoe/aoeblk.c
@@ -237,7 +237,7 @@ aoeblk_getgeo(struct block_device *bdev, struct hd_geometry *geo)
         return 0;
 }
 
-static struct block_device_operations aoe_bdops = {
+static const struct block_device_operations aoe_bdops = {
         .open = aoeblk_open,
         .release = aoeblk_release,
         .getgeo = aoeblk_getgeo,
diff --git a/drivers/block/ataflop.c b/drivers/block/ataflop.c
index 3ff02941b3dd..847a9e57570a 100644
--- a/drivers/block/ataflop.c
+++ b/drivers/block/ataflop.c
@@ -1856,7 +1856,7 @@ static int floppy_release(struct gendisk *disk, fmode_t mode)
         return 0;
 }
 
-static struct block_device_operations floppy_fops = {
+static const struct block_device_operations floppy_fops = {
         .owner          = THIS_MODULE,
         .open           = floppy_open,
         .release        = floppy_release,
diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index 4bf8705b3ace..4f688434daf1 100644
--- a/drivers/block/brd.c
+++ b/drivers/block/brd.c
@@ -375,7 +375,7 @@ static int brd_ioctl(struct block_device *bdev, fmode_t mode,
         return error;
 }
 
-static struct block_device_operations brd_fops = {
+static const struct block_device_operations brd_fops = {
         .owner =                THIS_MODULE,
         .locked_ioctl =         brd_ioctl,
 #ifdef CONFIG_BLK_DEV_XIP
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index d8372b432826..4f19105f755c 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -205,7 +205,7 @@ static int cciss_compat_ioctl(struct block_device *, fmode_t,
                               unsigned, unsigned long);
 #endif
 
-static struct block_device_operations cciss_fops = {
+static const struct block_device_operations cciss_fops = {
         .owner = THIS_MODULE,
         .open = cciss_open,
         .release = cciss_release,
diff --git a/drivers/block/cpqarray.c b/drivers/block/cpqarray.c
index 44fa2018f6b0..b82d438e2607 100644
--- a/drivers/block/cpqarray.c
+++ b/drivers/block/cpqarray.c
@@ -193,7 +193,7 @@ static inline ctlr_info_t *get_host(struct gendisk *disk)
 }
 
 
-static struct block_device_operations ida_fops  = {
+static const struct block_device_operations ida_fops  = {
         .owner          = THIS_MODULE,
         .open           = ida_open,
         .release        = ida_release,
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 2b387c2260d8..5c01f747571b 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -3907,7 +3907,7 @@ static int floppy_revalidate(struct gendisk *disk)
         return res;
 }
 
-static struct block_device_operations floppy_fops = {
+static const struct block_device_operations floppy_fops = {
         .owner                  = THIS_MODULE,
         .open                   = floppy_open,
         .release                = floppy_release,
diff --git a/drivers/block/hd.c b/drivers/block/hd.c
index f9d01608cbe2..d5cdce08ffd2 100644
--- a/drivers/block/hd.c
+++ b/drivers/block/hd.c
@@ -692,7 +692,7 @@ static irqreturn_t hd_interrupt(int irq, void *dev_id)
         return IRQ_HANDLED;
 }
 
-static struct block_device_operations hd_fops = {
+static const struct block_device_operations hd_fops = {
         .getgeo =       hd_getgeo,
 };
 
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index bbb79441d895..edda9ea7c626 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1438,7 +1438,7 @@ out_unlocked:
         return 0;
 }
 
-static struct block_device_operations lo_fops = {
+static const struct block_device_operations lo_fops = {
         .owner =        THIS_MODULE,
         .open =         lo_open,
         .release =      lo_release,
diff --git a/drivers/block/mg_disk.c b/drivers/block/mg_disk.c
index 6d7fbaa92248..e0339aaa1815 100644
--- a/drivers/block/mg_disk.c
+++ b/drivers/block/mg_disk.c
@@ -775,7 +775,7 @@ static int mg_getgeo(struct block_device *bdev, struct hd_geometry *geo)
         return 0;
 }
 
-static struct block_device_operations mg_disk_ops = {
+static const struct block_device_operations mg_disk_ops = {
         .getgeo = mg_getgeo
 };
 
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 5d23ffad7c77..cc923a5b430c 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -722,7 +722,7 @@ static int nbd_ioctl(struct block_device *bdev, fmode_t mode,
         return error;
 }
 
-static struct block_device_operations nbd_fops =
+static const struct block_device_operations nbd_fops =
 {
         .owner =        THIS_MODULE,
         .locked_ioctl = nbd_ioctl,
diff --git a/drivers/block/osdblk.c b/drivers/block/osdblk.c
index 13c1aee6aa3f..a808b1530b3b 100644
--- a/drivers/block/osdblk.c
+++ b/drivers/block/osdblk.c
@@ -125,7 +125,7 @@ static struct class *class_osdblk;		/* /sys/class/osdblk */
 static DEFINE_MUTEX(ctl_mutex); /* Serialize open/close/setup/teardown */
 static LIST_HEAD(osdblkdev_list);
 
-static struct block_device_operations osdblk_bd_ops = {
+static const struct block_device_operations osdblk_bd_ops = {
         .owner          = THIS_MODULE,
 };
 
diff --git a/drivers/block/paride/pcd.c b/drivers/block/paride/pcd.c
index 9f3518c515a1..8866ca369d5e 100644
--- a/drivers/block/paride/pcd.c
+++ b/drivers/block/paride/pcd.c
@@ -247,7 +247,7 @@ static int pcd_block_media_changed(struct gendisk *disk)
         return cdrom_media_changed(&cd->info);
 }
 
-static struct block_device_operations pcd_bdops = {
+static const struct block_device_operations pcd_bdops = {
         .owner          = THIS_MODULE,
         .open           = pcd_block_open,
         .release        = pcd_block_release,
diff --git a/drivers/block/paride/pd.c b/drivers/block/paride/pd.c
index bf5955b3d873..569e39e8f114 100644
--- a/drivers/block/paride/pd.c
+++ b/drivers/block/paride/pd.c
@@ -807,7 +807,7 @@ static int pd_revalidate(struct gendisk *p)
         return 0;
 }
 
-static struct block_device_operations pd_fops = {
+static const struct block_device_operations pd_fops = {
         .owner          = THIS_MODULE,
         .open           = pd_open,
         .release        = pd_release,
diff --git a/drivers/block/paride/pf.c b/drivers/block/paride/pf.c
index 68a90834e993..ea54ea393553 100644
--- a/drivers/block/paride/pf.c
+++ b/drivers/block/paride/pf.c
@@ -262,7 +262,7 @@ static char *pf_buf;		/* buffer for request in progress */
 
 /* kernel glue structures */
 
-static struct block_device_operations pf_fops = {
+static const struct block_device_operations pf_fops = {
         .owner          = THIS_MODULE,
         .open           = pf_open,
         .release        = pf_release,
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index fd5bb8ad59a9..2ddf03ae034e 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -2849,7 +2849,7 @@ static int pkt_media_changed(struct gendisk *disk)
         return attached_disk->fops->media_changed(attached_disk);
 }
 
-static struct block_device_operations pktcdvd_ops = {
+static const struct block_device_operations pktcdvd_ops = {
         .owner =                THIS_MODULE,
         .open =                 pkt_open,
         .release =              pkt_close,
diff --git a/drivers/block/ps3disk.c b/drivers/block/ps3disk.c
index 34cbb7f3efa8..03a130dca8ab 100644
--- a/drivers/block/ps3disk.c
+++ b/drivers/block/ps3disk.c
@@ -82,7 +82,7 @@ enum lv1_ata_in_out {
 static int ps3disk_major;
 
 
-static struct block_device_operations ps3disk_fops = {
+static const struct block_device_operations ps3disk_fops = {
         .owner          = THIS_MODULE,
 };
 
diff --git a/drivers/block/ps3vram.c b/drivers/block/ps3vram.c
index c8753a9ed290..3bb7c47c869f 100644
--- a/drivers/block/ps3vram.c
+++ b/drivers/block/ps3vram.c
@@ -88,7 +88,7 @@ struct ps3vram_priv {
 static int ps3vram_major;
 
 
-static struct block_device_operations ps3vram_fops = {
+static const struct block_device_operations ps3vram_fops = {
         .owner          = THIS_MODULE,
 };
 
diff --git a/drivers/block/sunvdc.c b/drivers/block/sunvdc.c
index cbfd9c0aef03..411f064760b4 100644
--- a/drivers/block/sunvdc.c
+++ b/drivers/block/sunvdc.c
@@ -103,7 +103,7 @@ static int vdc_getgeo(struct block_device *bdev, struct hd_geometry *geo)
         return 0;
 }
 
-static struct block_device_operations vdc_fops = {
+static const struct block_device_operations vdc_fops = {
         .owner          = THIS_MODULE,
         .getgeo         = vdc_getgeo,
 };
diff --git a/drivers/block/swim.c b/drivers/block/swim.c
index cf7877fb8a7d..8f569e3df890 100644
--- a/drivers/block/swim.c
+++ b/drivers/block/swim.c
@@ -748,7 +748,7 @@ static int floppy_revalidate(struct gendisk *disk)
         return !fs->disk_in;
 }
 
-static struct block_device_operations floppy_fops = {
+static const struct block_device_operations floppy_fops = {
         .owner           = THIS_MODULE,
         .open            = floppy_open,
         .release         = floppy_release,
diff --git a/drivers/block/swim3.c b/drivers/block/swim3.c
index 80df93e3cdd0..e39e3820fef9 100644
--- a/drivers/block/swim3.c
+++ b/drivers/block/swim3.c
@@ -998,7 +998,7 @@ static int floppy_revalidate(struct gendisk *disk)
         return ret;
 }
 
-static struct block_device_operations floppy_fops = {
+static const struct block_device_operations floppy_fops = {
         .open           = floppy_open,
         .release        = floppy_release,
         .locked_ioctl   = floppy_ioctl,
diff --git a/drivers/block/sx8.c b/drivers/block/sx8.c
index f5cd2e83ebcc..a7c4184f4a63 100644
--- a/drivers/block/sx8.c
+++ b/drivers/block/sx8.c
@@ -423,7 +423,7 @@ static struct pci_driver carm_driver = {
         .remove         = carm_remove_one,
 };
 
-static struct block_device_operations carm_bd_ops = {
+static const struct block_device_operations carm_bd_ops = {
         .owner          = THIS_MODULE,
         .getgeo         = carm_bdev_getgeo,
 };
diff --git a/drivers/block/ub.c b/drivers/block/ub.c
index cc54473b8e77..c739b203fe91 100644
--- a/drivers/block/ub.c
+++ b/drivers/block/ub.c
@@ -1789,7 +1789,7 @@ static int ub_bd_media_changed(struct gendisk *disk)
         return lun->changed;
 }
 
-static struct block_device_operations ub_bd_fops = {
+static const struct block_device_operations ub_bd_fops = {
         .owner          = THIS_MODULE,
         .open           = ub_bd_open,
         .release        = ub_bd_release,
diff --git a/drivers/block/umem.c b/drivers/block/umem.c
index 858c34dd032d..ad1ba393801a 100644
--- a/drivers/block/umem.c
+++ b/drivers/block/umem.c
@@ -140,7 +140,6 @@ struct cardinfo {
 };
 
 static struct cardinfo cards[MM_MAXCARDS];
-static struct block_device_operations mm_fops;
 static struct timer_list battery_timer;
 
 static int num_cards;
@@ -789,7 +788,7 @@ static int mm_check_change(struct gendisk *disk)
         return 0;
 }
 
-static struct block_device_operations mm_fops = {
+static const struct block_device_operations mm_fops = {
         .owner          = THIS_MODULE,
         .getgeo         = mm_getgeo,
         .revalidate_disk = mm_revalidate,
diff --git a/drivers/block/viodasd.c b/drivers/block/viodasd.c
index b441ce3832e9..a8c8b56b275e 100644
--- a/drivers/block/viodasd.c
+++ b/drivers/block/viodasd.c
@@ -219,7 +219,7 @@ static int viodasd_getgeo(struct block_device *bdev, struct hd_geometry *geo)
 /*
  * Our file operations table
  */
-static struct block_device_operations viodasd_fops = {
+static const struct block_device_operations viodasd_fops = {
         .owner = THIS_MODULE,
         .open = viodasd_open,
         .release = viodasd_release,
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index aa1a3d5a3e2b..aa89fe45237d 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -243,7 +243,7 @@ static int virtblk_getgeo(struct block_device *bd, struct hd_geometry *geo)
         return 0;
 }
 
-static struct block_device_operations virtblk_fops = {
+static const struct block_device_operations virtblk_fops = {
         .locked_ioctl = virtblk_ioctl,
         .owner  = THIS_MODULE,
         .getgeo = virtblk_getgeo,
diff --git a/drivers/block/xd.c b/drivers/block/xd.c
index ce2429219925..0877d3628fda 100644
--- a/drivers/block/xd.c
+++ b/drivers/block/xd.c
@@ -130,7 +130,7 @@ static struct gendisk *xd_gendisk[2];
 
 static int xd_getgeo(struct block_device *bdev, struct hd_geometry *geo);
 
-static struct block_device_operations xd_fops = {
+static const struct block_device_operations xd_fops = {
         .owner  = THIS_MODULE,
         .locked_ioctl   = xd_ioctl,
         .getgeo = xd_getgeo,
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index e53284767f7c..b8578bb3f4c9 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -65,7 +65,7 @@ struct blk_shadow {
         unsigned long frame[BLKIF_MAX_SEGMENTS_PER_REQUEST];
 };
 
-static struct block_device_operations xlvbd_block_fops;
+static const struct block_device_operations xlvbd_block_fops;
 
 #define BLK_RING_SIZE __RING_SIZE((struct blkif_sring *)0, PAGE_SIZE)
 
@@ -1039,7 +1039,7 @@ static int blkif_release(struct gendisk *disk, fmode_t mode)
         return 0;
 }
 
-static struct block_device_operations xlvbd_block_fops =
+static const struct block_device_operations xlvbd_block_fops =
 {
         .owner = THIS_MODULE,
         .open = blkif_open,
diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c
index b20abe102a2b..e5c5415eb45e 100644
--- a/drivers/block/xsysace.c
+++ b/drivers/block/xsysace.c
@@ -941,7 +941,7 @@ static int ace_getgeo(struct block_device *bdev, struct hd_geometry *geo)
         return 0;
 }
 
-static struct block_device_operations ace_fops = {
+static const struct block_device_operations ace_fops = {
         .owner = THIS_MODULE,
         .open = ace_open,
         .release = ace_release,
diff --git a/drivers/block/z2ram.c b/drivers/block/z2ram.c
index b2590409f25e..64f941e0f14b 100644
--- a/drivers/block/z2ram.c
+++ b/drivers/block/z2ram.c
@@ -64,7 +64,6 @@ static int current_device   = -1;
 
 static DEFINE_SPINLOCK(z2ram_lock);
 
-static struct block_device_operations z2_fops;
 static struct gendisk *z2ram_gendisk;
 
 static void do_z2_request(struct request_queue *q)
@@ -315,7 +314,7 @@ z2_release(struct gendisk *disk, fmode_t mode)
     return 0;
 }
 
-static struct block_device_operations z2_fops =
+static const struct block_device_operations z2_fops =
 {
         .owner          = THIS_MODULE,
         .open           = z2_open,
diff --git a/drivers/cdrom/gdrom.c b/drivers/cdrom/gdrom.c
index b5621f27c4be..a762283d2a21 100644
--- a/drivers/cdrom/gdrom.c
+++ b/drivers/cdrom/gdrom.c
@@ -512,7 +512,7 @@ static int gdrom_bdops_ioctl(struct block_device *bdev, fmode_t mode,
         return cdrom_ioctl(gd.cd_info, bdev, mode, cmd, arg);
 }
 
-static struct block_device_operations gdrom_bdops = {
+static const struct block_device_operations gdrom_bdops = {
         .owner                  = THIS_MODULE,
         .open                   = gdrom_bdops_open,
         .release                = gdrom_bdops_release,
diff --git a/drivers/cdrom/viocd.c b/drivers/cdrom/viocd.c
index 0fff646cc2f0..57ca69e0ac55 100644
--- a/drivers/cdrom/viocd.c
+++ b/drivers/cdrom/viocd.c
@@ -177,7 +177,7 @@ static int viocd_blk_media_changed(struct gendisk *disk)
         return cdrom_media_changed(&di->viocd_info);
 }
 
-struct block_device_operations viocd_fops = {
+static const struct block_device_operations viocd_fops = {
         .owner =                THIS_MODULE,
         .open =                 viocd_blk_open,
         .release =              viocd_blk_release,
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index b79ca419d8d9..64207df8da82 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -1686,7 +1686,7 @@ static int idecd_revalidate_disk(struct gendisk *disk)
         return  0;
 }
 
-static struct block_device_operations idecd_ops = {
+static const struct block_device_operations idecd_ops = {
         .owner                  = THIS_MODULE,
         .open                   = idecd_open,
         .release                = idecd_release,
diff --git a/drivers/ide/ide-gd.c b/drivers/ide/ide-gd.c
index 214119026b3f..753241429c26 100644
--- a/drivers/ide/ide-gd.c
+++ b/drivers/ide/ide-gd.c
@@ -321,7 +321,7 @@ static int ide_gd_ioctl(struct block_device *bdev, fmode_t mode,
         return drive->disk_ops->ioctl(drive, bdev, mode, cmd, arg);
 }
 
-static struct block_device_operations ide_gd_ops = {
+static const struct block_device_operations ide_gd_ops = {
         .owner                  = THIS_MODULE,
         .open                   = ide_gd_open,
         .release                = ide_gd_release,
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 9d6f62baac27..58fc920d5c32 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -1913,7 +1913,7 @@ static int idetape_ioctl(struct block_device *bdev, fmode_t mode,
         return err;
 }
 
-static struct block_device_operations idetape_block_ops = {
+static const struct block_device_operations idetape_block_ops = {
         .owner          = THIS_MODULE,
         .open           = idetape_open,
         .release        = idetape_release,
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index eee28fac210c..376f1ab48a24 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -1716,7 +1716,7 @@ out:
         return r;
 }
 
-static struct block_device_operations dm_blk_dops;
+static const struct block_device_operations dm_blk_dops;
 
 static void dm_wq_work(struct work_struct *work);
 
@@ -2663,7 +2663,7 @@ void dm_free_md_mempools(struct dm_md_mempools *pools)
         kfree(pools);
 }
 
-static struct block_device_operations dm_blk_dops = {
+static const struct block_device_operations dm_blk_dops = {
         .open = dm_blk_open,
         .release = dm_blk_close,
         .ioctl = dm_blk_ioctl,
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 9dd872000cec..6aa497e4baf8 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -138,7 +138,7 @@ static ctl_table raid_root_table[] = {
         { .ctl_name = 0 }
 };
 
-static struct block_device_operations md_fops;
+static const struct block_device_operations md_fops;
 
 static int start_readonly;
 
@@ -5556,7 +5556,7 @@ static int md_revalidate(struct gendisk *disk)
         mddev->changed = 0;
         return 0;
 }
-static struct block_device_operations md_fops =
+static const struct block_device_operations md_fops =
 {
         .owner          = THIS_MODULE,
         .open           = md_open,
diff --git a/drivers/memstick/core/mspro_block.c b/drivers/memstick/core/mspro_block.c
index 7847bbc1440d..bd83fa0a4970 100644
--- a/drivers/memstick/core/mspro_block.c
+++ b/drivers/memstick/core/mspro_block.c
@@ -235,7 +235,7 @@ static int mspro_block_bd_getgeo(struct block_device *bdev,
         return 0;
 }
 
-static struct block_device_operations ms_block_bdops = {
+static const struct block_device_operations ms_block_bdops = {
         .open    = mspro_block_bd_open,
         .release = mspro_block_bd_release,
         .getgeo  = mspro_block_bd_getgeo,
diff --git a/drivers/message/i2o/i2o_block.c b/drivers/message/i2o/i2o_block.c
index 335d4c78a775..d505b68cd372 100644
--- a/drivers/message/i2o/i2o_block.c
+++ b/drivers/message/i2o/i2o_block.c
@@ -925,7 +925,7 @@ static void i2o_block_request_fn(struct request_queue *q)
 };
 
 /* I2O Block device operations definition */
-static struct block_device_operations i2o_block_fops = {
+static const struct block_device_operations i2o_block_fops = {
         .owner = THIS_MODULE,
         .open = i2o_block_open,
         .release = i2o_block_release,
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index adc205c49fbf..85f0e8cd875b 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -130,7 +130,7 @@ mmc_blk_getgeo(struct block_device *bdev, struct hd_geometry *geo)
         return 0;
 }
 
-static struct block_device_operations mmc_bdops = {
+static const struct block_device_operations mmc_bdops = {
         .open                   = mmc_blk_open,
         .release                = mmc_blk_release,
         .getgeo                 = mmc_blk_getgeo,
diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index 7baba40c1ed2..0acbf4f5be50 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -210,7 +210,7 @@ static int blktrans_ioctl(struct block_device *bdev, fmode_t mode,
         }
 }
 
-static struct block_device_operations mtd_blktrans_ops = {
+static const struct block_device_operations mtd_blktrans_ops = {
         .owner          = THIS_MODULE,
         .open           = blktrans_open,
         .release        = blktrans_release,
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index e109da4583a8..dad0449475b6 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -2146,7 +2146,7 @@ static int dasd_getgeo(struct block_device *bdev, struct hd_geometry *geo)
         return 0;
 }
 
-struct block_device_operations
+const struct block_device_operations
 dasd_device_operations = {
         .owner          = THIS_MODULE,
         .open           = dasd_open,
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h
index 5e47a1ee52b9..8afd9fa00875 100644
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -540,7 +540,7 @@ dasd_check_blocksize(int bsize)
 extern debug_info_t *dasd_debug_area;
 extern struct dasd_profile_info_t dasd_global_profile;
 extern unsigned int dasd_profile_level;
-extern struct block_device_operations dasd_device_operations;
+extern const struct block_device_operations dasd_device_operations;
 
 extern struct kmem_cache *dasd_page_cache;
 
diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c
index d34617682a62..f76f4bd82b9f 100644
--- a/drivers/s390/block/dcssblk.c
+++ b/drivers/s390/block/dcssblk.c
@@ -34,7 +34,7 @@ static int dcssblk_direct_access(struct block_device *bdev, sector_t secnum,
 static char dcssblk_segments[DCSSBLK_PARM_LEN] = "\0";
 
 static int dcssblk_major;
-static struct block_device_operations dcssblk_devops = {
+static const struct block_device_operations dcssblk_devops = {
         .owner          = THIS_MODULE,
         .open           = dcssblk_open,
         .release        = dcssblk_release,
diff --git a/drivers/s390/block/xpram.c b/drivers/s390/block/xpram.c
index ee604e92a5fa..116d1b3eeb15 100644
--- a/drivers/s390/block/xpram.c
+++ b/drivers/s390/block/xpram.c
@@ -244,7 +244,7 @@ static int xpram_getgeo(struct block_device *bdev, struct hd_geometry *geo)
         return 0;
 }
 
-static struct block_device_operations xpram_devops =
+static const struct block_device_operations xpram_devops =
 {
         .owner  = THIS_MODULE,
         .getgeo = xpram_getgeo,
diff --git a/drivers/s390/char/tape_block.c b/drivers/s390/char/tape_block.c
index 4cb9e70507ab..64f57ef2763c 100644
--- a/drivers/s390/char/tape_block.c
+++ b/drivers/s390/char/tape_block.c
@@ -50,7 +50,7 @@ static int tapeblock_ioctl(struct block_device *, fmode_t, unsigned int,
 static int tapeblock_medium_changed(struct gendisk *);
 static int tapeblock_revalidate_disk(struct gendisk *);
 
-static struct block_device_operations tapeblock_fops = {
+static const struct block_device_operations tapeblock_fops = {
         .owner           = THIS_MODULE,
         .open            = tapeblock_open,
         .release         = tapeblock_release,
diff --git a/drivers/sbus/char/jsflash.c b/drivers/sbus/char/jsflash.c
index 6d4651684688..869a30b49edc 100644
--- a/drivers/sbus/char/jsflash.c
+++ b/drivers/sbus/char/jsflash.c
@@ -452,7 +452,7 @@ static const struct file_operations jsf_fops = {
 
 static struct miscdevice jsf_dev = { JSF_MINOR, "jsflash", &jsf_fops };
 
-static struct block_device_operations jsfd_fops = {
+static const struct block_device_operations jsfd_fops = {
         .owner =        THIS_MODULE,
 };
 
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index a89c421dab51..8dd96dcd716c 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -956,7 +956,7 @@ static int sd_compat_ioctl(struct block_device *bdev, fmode_t mode,
 }
 #endif
 
-static struct block_device_operations sd_fops = {
+static const struct block_device_operations sd_fops = {
         .owner                  = THIS_MODULE,
         .open                   = sd_open,
         .release                = sd_release,
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index cce0fe4c8a3b..eb61f7a70e1d 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -525,7 +525,7 @@ static int sr_block_media_changed(struct gendisk *disk)
         return cdrom_media_changed(&cd->cdi);
 }
 
-static struct block_device_operations sr_bdops =
+static const struct block_device_operations sr_bdops =
 {
         .owner          = THIS_MODULE,
         .open           = sr_block_open,
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 71e7e03ac343..5d1ed50bd46c 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1114,7 +1114,7 @@ EXPORT_SYMBOL(revalidate_disk);
 int check_disk_change(struct block_device *bdev)
 {
         struct gendisk *disk = bdev->bd_disk;
-        struct block_device_operations * bdops = disk->fops;
+        const struct block_device_operations *bdops = disk->fops;
 
         if (!bdops->media_changed)
                 return 0;
diff --git a/fs/ext2/xip.c b/fs/ext2/xip.c
index b72b85884223..c18fbf3e4068 100644
--- a/fs/ext2/xip.c
+++ b/fs/ext2/xip.c
@@ -20,7 +20,7 @@ __inode_direct_access(struct inode *inode, sector_t block,
                       void **kaddr, unsigned long *pfn)
 {
         struct block_device *bdev = inode->i_sb->s_bdev;
-        struct block_device_operations *ops = bdev->bd_disk->fops;
+        const struct block_device_operations *ops = bdev->bd_disk->fops;
         sector_t sector;
 
         sector = block * (PAGE_SIZE / 512); /* ext2 block to bdev sector */
diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index fbeaddf595d3..7b685e10cbad 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -581,7 +581,7 @@ try_scan:
                 }
 
                 if (from + size > get_capacity(disk)) {
-                        struct block_device_operations *bdops = disk->fops;
+                        const struct block_device_operations *bdops = disk->fops;
                         unsigned long long capacity;
 
                         printk(KERN_WARNING
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 109d179adb93..297df45ffd0a 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -151,7 +151,7 @@ struct gendisk {
         struct disk_part_tbl *part_tbl;
         struct hd_struct part0;
 
-        struct block_device_operations *fops;
+        const struct block_device_operations *fops;
         struct request_queue *queue;
         void *private_data;