block: pass a gendisk to ->open

->open is only called on the whole device.  Make that explicit by
passing a gendisk instead of the block_device.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Acked-by: Christian Brauner <brauner@kernel.org>
Acked-by: Jack Wang <jinpu.wang@ionos.com>		[rnbd]
Link: https://lore.kernel.org/r/20230608110258.189493-9-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index f4c1e6e..6b831f8 100644 (file)
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -108,7 +108,7 @@ static inline void ubd_set_bit(__u64 bit, unsigned char *data)
 static DEFINE_MUTEX(ubd_lock);
 static DEFINE_MUTEX(ubd_mutex); /* replaces BKL, might not be needed */
 
-static int ubd_open(struct block_device *bdev, fmode_t mode);
+static int ubd_open(struct gendisk *disk, fmode_t mode);
 static void ubd_release(struct gendisk *disk, fmode_t mode);
 static int ubd_ioctl(struct block_device *bdev, fmode_t mode,
                     unsigned int cmd, unsigned long arg);
@@ -1154,9 +1154,8 @@ static int __init ubd_driver_init(void){
 
 device_initcall(ubd_driver_init);
 
-static int ubd_open(struct block_device *bdev, fmode_t mode)
+static int ubd_open(struct gendisk *disk, fmode_t mode)
 {
-       struct gendisk *disk = bdev->bd_disk;
        struct ubd *ubd_dev = disk->private_data;
        int err = 0;
 

diff --git a/arch/xtensa/platforms/iss/simdisk.c b/arch/xtensa/platforms/iss/simdisk.c
index f50caaa..38f95f7 100644 (file)
--- a/arch/xtensa/platforms/iss/simdisk.c
+++ b/arch/xtensa/platforms/iss/simdisk.c
@@ -120,9 +120,9 @@ static void simdisk_submit_bio(struct bio *bio)
        bio_endio(bio);
 }
 
-static int simdisk_open(struct block_device *bdev, fmode_t mode)
+static int simdisk_open(struct gendisk *disk, fmode_t mode)
 {
-       struct simdisk *dev = bdev->bd_disk->private_data;
+       struct simdisk *dev = disk->private_data;
 
        spin_lock(&dev->lock);
        ++dev->users;

diff --git a/block/bdev.c b/block/bdev.c
index 981f613..8a5fded 100644 (file)
--- a/block/bdev.c
+++ b/block/bdev.c
@@ -652,7 +652,7 @@ static int blkdev_get_whole(struct block_device *bdev, fmode_t mode)
        int ret;
 
        if (disk->fops->open) {
-               ret = disk->fops->open(bdev, mode);
+               ret = disk->fops->open(disk, mode);
                if (ret) {
                        /* avoid ghost partitions on a removed medium */
                        if (ret == -ENOMEDIUM &&

diff --git a/drivers/block/amiflop.c b/drivers/block/amiflop.c
index 6de12b3..0cf2e58 100644 (file)
--- a/drivers/block/amiflop.c
+++ b/drivers/block/amiflop.c
@@ -1654,10 +1654,10 @@ static void fd_probe(int dev)
  * /dev/PS0 etc), and disallows simultaneous access to the same
  * drive with different device numbers.
  */
-static int floppy_open(struct block_device *bdev, fmode_t mode)
+static int floppy_open(struct gendisk *disk, fmode_t mode)
 {
-       int drive = MINOR(bdev->bd_dev) & 3;
-       int system =  (MINOR(bdev->bd_dev) & 4) >> 2;
+       int drive = disk->first_minor & 3;
+       int system = (disk->first_minor & 4) >> 2;
        int old_dev;
        unsigned long flags;
 
@@ -1675,7 +1675,7 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
        }
 
        if (mode & (FMODE_READ|FMODE_WRITE)) {
-               disk_check_media_change(bdev->bd_disk);
+               disk_check_media_change(disk);
                if (mode & FMODE_WRITE) {
                        int wrprot;
 

diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c
index 128722c..4ca6bbb 100644 (file)
--- a/drivers/block/aoe/aoeblk.c
+++ b/drivers/block/aoe/aoeblk.c
@@ -204,9 +204,9 @@ aoedisk_rm_debugfs(struct aoedev *d)
 }
 
 static int
-aoeblk_open(struct block_device *bdev, fmode_t mode)
+aoeblk_open(struct gendisk *disk, fmode_t mode)
 {
-       struct aoedev *d = bdev->bd_disk->private_data;
+       struct aoedev *d = disk->private_data;
        ulong flags;
 
        if (!virt_addr_valid(d)) {

diff --git a/drivers/block/ataflop.c b/drivers/block/ataflop.c
index da481dd..4febd52 100644 (file)
--- a/drivers/block/ataflop.c
+++ b/drivers/block/ataflop.c
@@ -447,7 +447,7 @@ static int fd_locked_ioctl(struct block_device *bdev, fmode_t mode, unsigned int
 static void fd_probe( int drive );
 static int fd_test_drive_present( int drive );
 static void config_types( void );
-static int floppy_open(struct block_device *bdev, fmode_t mode);
+static int floppy_open(struct gendisk *disk, fmode_t mode);
 static void floppy_release(struct gendisk *disk, fmode_t mode);
 
 /************************* End of Prototypes **************************/
@@ -1915,10 +1915,10 @@ static void __init config_types( void )
  * drive with different device numbers.
  */
 
-static int floppy_open(struct block_device *bdev, fmode_t mode)
+static int floppy_open(struct gendisk *disk, fmode_t mode)
 {
-       struct atari_floppy_struct *p = bdev->bd_disk->private_data;
-       int type  = MINOR(bdev->bd_dev) >> 2;
+       struct atari_floppy_struct *p = disk->private_data;
+       int type = disk->first_minor >> 2;
 
        DPRINT(("fd_open: type=%d\n",type));
        if (p->ref && p->type != type)
@@ -1938,8 +1938,8 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
                return 0;
 
        if (mode & (FMODE_READ|FMODE_WRITE)) {
-               if (disk_check_media_change(bdev->bd_disk))
-                       floppy_revalidate(bdev->bd_disk);
+               if (disk_check_media_change(disk))
+                       floppy_revalidate(disk);
                if (mode & FMODE_WRITE) {
                        if (p->wpstat) {
                                if (p->ref < 0)
@@ -1953,12 +1953,12 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
        return 0;
 }
 
-static int floppy_unlocked_open(struct block_device *bdev, fmode_t mode)
+static int floppy_unlocked_open(struct gendisk *disk, fmode_t mode)
 {
        int ret;
 
        mutex_lock(&ataflop_mutex);
-       ret = floppy_open(bdev, mode);
+       ret = floppy_open(disk, mode);
        mutex_unlock(&ataflop_mutex);
 
        return ret;

diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 54223f6..8b6c194 100644 (file)
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -49,7 +49,7 @@
 #include "drbd_debugfs.h"
 
 static DEFINE_MUTEX(drbd_main_mutex);
-static int drbd_open(struct block_device *bdev, fmode_t mode);
+static int drbd_open(struct gendisk *disk, fmode_t mode);
 static void drbd_release(struct gendisk *gd, fmode_t mode);
 static void md_sync_timer_fn(struct timer_list *t);
 static int w_bitmap_io(struct drbd_work *w, int unused);
@@ -1882,9 +1882,9 @@ int drbd_send_all(struct drbd_connection *connection, struct socket *sock, void
        return 0;
 }
 
-static int drbd_open(struct block_device *bdev, fmode_t mode)
+static int drbd_open(struct gendisk *disk, fmode_t mode)
 {
-       struct drbd_device *device = bdev->bd_disk->private_data;
+       struct drbd_device *device = disk->private_data;
        unsigned long flags;
        int rv = 0;
 

diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index 3accafc..ef3bbb7 100644 (file)
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -402,7 +402,7 @@ static struct floppy_drive_struct drive_state[N_DRIVE];
 static struct floppy_write_errors write_errors[N_DRIVE];
 static struct timer_list motor_off_timer[N_DRIVE];
 static struct blk_mq_tag_set tag_sets[N_DRIVE];
-static struct block_device *opened_bdev[N_DRIVE];
+static struct gendisk *opened_disk[N_DRIVE];
 static DEFINE_MUTEX(open_lock);
 static struct floppy_raw_cmd *raw_cmd, default_raw_cmd;
 
@@ -3251,10 +3251,11 @@ static int set_geometry(unsigned int cmd, struct floppy_struct *g,
                            floppy_type[type].size + 1;
                process_fd_request();
                for (cnt = 0; cnt < N_DRIVE; cnt++) {
-                       struct block_device *bdev = opened_bdev[cnt];
-                       if (!bdev || ITYPE(drive_state[cnt].fd_device) != type)
+                       struct gendisk *disk = opened_disk[cnt];
+
+                       if (!disk || ITYPE(drive_state[cnt].fd_device) != type)
                                continue;
-                       __invalidate_device(bdev, true);
+                       __invalidate_device(disk->part0, true);
                }
                mutex_unlock(&open_lock);
        } else {
@@ -3973,7 +3974,7 @@ static void floppy_release(struct gendisk *disk, fmode_t mode)
                drive_state[drive].fd_ref = 0;
        }
        if (!drive_state[drive].fd_ref)
-               opened_bdev[drive] = NULL;
+               opened_disk[drive] = NULL;
        mutex_unlock(&open_lock);
        mutex_unlock(&floppy_mutex);
 }
@@ -3983,9 +3984,9 @@ static void floppy_release(struct gendisk *disk, fmode_t mode)
  * /dev/PS0 etc), and disallows simultaneous access to the same
  * drive with different device numbers.
  */
-static int floppy_open(struct block_device *bdev, fmode_t mode)
+static int floppy_open(struct gendisk *disk, fmode_t mode)
 {
-       int drive = (long)bdev->bd_disk->private_data;
+       int drive = (long)disk->private_data;
        int old_dev, new_dev;
        int try;
        int res = -EBUSY;
@@ -3994,7 +3995,7 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
        mutex_lock(&floppy_mutex);
        mutex_lock(&open_lock);
        old_dev = drive_state[drive].fd_device;
-       if (opened_bdev[drive] && opened_bdev[drive] != bdev)
+       if (opened_disk[drive] && opened_disk[drive] != disk)
                goto out2;
 
        if (!drive_state[drive].fd_ref && (drive_params[drive].flags & FD_BROKEN_DCL)) {
@@ -4004,7 +4005,7 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
 
        drive_state[drive].fd_ref++;
 
-       opened_bdev[drive] = bdev;
+       opened_disk[drive] = disk;
 
        res = -ENXIO;
 
@@ -4038,7 +4039,7 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
                }
        }
 
-       new_dev = MINOR(bdev->bd_dev);
+       new_dev = disk->first_minor;
        drive_state[drive].fd_device = new_dev;
        set_capacity(disks[drive][ITYPE(new_dev)], floppy_sizes[new_dev]);
        if (old_dev != -1 && old_dev != new_dev) {
@@ -4054,8 +4055,8 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
                        drive_state[drive].last_checked = 0;
                        clear_bit(FD_OPEN_SHOULD_FAIL_BIT,
                                  &drive_state[drive].flags);
-                       if (disk_check_media_change(bdev->bd_disk))
-                               floppy_revalidate(bdev->bd_disk);
+                       if (disk_check_media_change(disk))
+                               floppy_revalidate(disk);
                        if (test_bit(FD_DISK_CHANGED_BIT, &drive_state[drive].flags))
                                goto out;
                        if (test_bit(FD_OPEN_SHOULD_FAIL_BIT, &drive_state[drive].flags))
@@ -4073,7 +4074,7 @@ out:
        drive_state[drive].fd_ref--;
 
        if (!drive_state[drive].fd_ref)
-               opened_bdev[drive] = NULL;
+               opened_disk[drive] = NULL;
 out2:
        mutex_unlock(&open_lock);
        mutex_unlock(&floppy_mutex);
@@ -4203,7 +4204,8 @@ static int floppy_revalidate(struct gendisk *disk)
                        drive_state[drive].generation++;
                if (drive_no_geom(drive)) {
                        /* auto-sensing */
-                       res = __floppy_read_block_0(opened_bdev[drive], drive);
+                       res = __floppy_read_block_0(opened_disk[drive]->part0,
+                                                   drive);
                } else {
                        if (cf)
                                poll_drive(false, FD_RAW_NEED_DISK);

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 6457a09..14202b6 100644 (file)
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -1553,13 +1553,13 @@ static struct nbd_config *nbd_alloc_config(void)
        return config;
 }
 
-static int nbd_open(struct block_device *bdev, fmode_t mode)
+static int nbd_open(struct gendisk *disk, fmode_t mode)
 {
        struct nbd_device *nbd;
        int ret = 0;
 
        mutex_lock(&nbd_index_mutex);
-       nbd = bdev->bd_disk->private_data;
+       nbd = disk->private_data;
        if (!nbd) {
                ret = -ENXIO;
                goto out;
@@ -1587,10 +1587,10 @@ static int nbd_open(struct block_device *bdev, fmode_t mode)
                refcount_inc(&nbd->refs);
                mutex_unlock(&nbd->config_lock);
                if (max_part)
-                       set_bit(GD_NEED_PART_SCAN, &bdev->bd_disk->state);
+                       set_bit(GD_NEED_PART_SCAN, &disk->state);
        } else if (nbd_disconnected(nbd->config)) {
                if (max_part)
-                       set_bit(GD_NEED_PART_SCAN, &bdev->bd_disk->state);
+                       set_bit(GD_NEED_PART_SCAN, &disk->state);
        }
 out:
        mutex_unlock(&nbd_index_mutex);

diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index af11405..93478d5 100644 (file)
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -2248,14 +2248,14 @@ static struct pktcdvd_device *pkt_find_dev_from_minor(unsigned int dev_minor)
        return pkt_devs[dev_minor];
 }
 
-static int pkt_open(struct block_device *bdev, fmode_t mode)
+static int pkt_open(struct gendisk *disk, fmode_t mode)
 {
        struct pktcdvd_device *pd = NULL;
        int ret;
 
        mutex_lock(&pktcdvd_mutex);
        mutex_lock(&ctl_mutex);
-       pd = pkt_find_dev_from_minor(MINOR(bdev->bd_dev));
+       pd = pkt_find_dev_from_minor(disk->first_minor);
        if (!pd) {
                ret = -ENODEV;
                goto out;
@@ -2277,7 +2277,7 @@ static int pkt_open(struct block_device *bdev, fmode_t mode)
                 * needed here as well, since ext2 (among others) may change
                 * the blocksize at mount time
                 */
-               set_blocksize(bdev, CD_FRAMESIZE);
+               set_blocksize(disk->part0, CD_FRAMESIZE);
        }
 
        mutex_unlock(&ctl_mutex);

diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 84ad3b1..9323106 100644 (file)
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -660,9 +660,9 @@ static bool pending_result_dec(struct pending_result *pending, int *result)
        return true;
 }
 
-static int rbd_open(struct block_device *bdev, fmode_t mode)
+static int rbd_open(struct gendisk *disk, fmode_t mode)
 {
-       struct rbd_device *rbd_dev = bdev->bd_disk->private_data;
+       struct rbd_device *rbd_dev = disk->private_data;
        bool removing = false;
 
        spin_lock_irq(&rbd_dev->lock);

diff --git a/drivers/block/rnbd/rnbd-clt.c b/drivers/block/rnbd/rnbd-clt.c
index 5eb8c78..8ec00f4 100644 (file)
--- a/drivers/block/rnbd/rnbd-clt.c
+++ b/drivers/block/rnbd/rnbd-clt.c
@@ -921,9 +921,9 @@ rnbd_clt_session *find_or_create_sess(const char *sessname, bool *first)
        return sess;
 }
 
-static int rnbd_client_open(struct block_device *block_device, fmode_t mode)
+static int rnbd_client_open(struct gendisk *disk, fmode_t mode)
 {
-       struct rnbd_clt_dev *dev = block_device->bd_disk->private_data;
+       struct rnbd_clt_dev *dev = disk->private_data;
 
        if (get_disk_ro(dev->gd) && (mode & FMODE_WRITE))
                return -EPERM;

diff --git a/drivers/block/swim.c b/drivers/block/swim.c
index 105bc5f..7ec8554 100644 (file)
--- a/drivers/block/swim.c
+++ b/drivers/block/swim.c
@@ -608,9 +608,9 @@ static void setup_medium(struct floppy_state *fs)
        }
 }
 
-static int floppy_open(struct block_device *bdev, fmode_t mode)
+static int floppy_open(struct gendisk *disk, fmode_t mode)
 {
-       struct floppy_state *fs = bdev->bd_disk->private_data;
+       struct floppy_state *fs = disk->private_data;
        struct swim __iomem *base = fs->swd->base;
        int err;
 
@@ -640,7 +640,7 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
                return 0;
 
        if (mode & (FMODE_READ|FMODE_WRITE)) {
-               if (disk_check_media_change(bdev->bd_disk) && fs->disk_in)
+               if (disk_check_media_change(disk) && fs->disk_in)
                        fs->ejected = 0;
                if ((mode & FMODE_WRITE) && fs->write_protected) {
                        err = -EROFS;
@@ -659,12 +659,12 @@ out:
        return err;
 }
 
-static int floppy_unlocked_open(struct block_device *bdev, fmode_t mode)
+static int floppy_unlocked_open(struct gendisk *disk, fmode_t mode)
 {
        int ret;
 
        mutex_lock(&swim_mutex);
-       ret = floppy_open(bdev, mode);
+       ret = floppy_open(disk, mode);
        mutex_unlock(&swim_mutex);
 
        return ret;

diff --git a/drivers/block/swim3.c b/drivers/block/swim3.c
index 3d689ba..c05a4e1 100644 (file)
--- a/drivers/block/swim3.c
+++ b/drivers/block/swim3.c
@@ -248,7 +248,7 @@ static void release_drive(struct floppy_state *fs);
 static int fd_eject(struct floppy_state *fs);
 static int floppy_ioctl(struct block_device *bdev, fmode_t mode,
                        unsigned int cmd, unsigned long param);
-static int floppy_open(struct block_device *bdev, fmode_t mode);
+static int floppy_open(struct gendisk *disk, fmode_t mode);
 static void floppy_release(struct gendisk *disk, fmode_t mode);
 static unsigned int floppy_check_events(struct gendisk *disk,
                                        unsigned int clearing);
@@ -923,9 +923,9 @@ static int floppy_ioctl(struct block_device *bdev, fmode_t mode,
        return ret;
 }
 
-static int floppy_open(struct block_device *bdev, fmode_t mode)
+static int floppy_open(struct gendisk *disk, fmode_t mode)
 {
-       struct floppy_state *fs = bdev->bd_disk->private_data;
+       struct floppy_state *fs = disk->private_data;
        struct swim3 __iomem *sw = fs->swim3;
        int n, err = 0;
 
@@ -963,8 +963,8 @@ static int floppy_open(struct block_device *bdev, fmode_t mode)
 
        if (err == 0 && (mode & FMODE_NDELAY) == 0
            && (mode & (FMODE_READ|FMODE_WRITE))) {
-               if (disk_check_media_change(bdev->bd_disk))
-                       floppy_revalidate(bdev->bd_disk);
+               if (disk_check_media_change(disk))
+                       floppy_revalidate(disk);
                if (fs->ejected)
                        err = -ENXIO;
        }

diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c
index 222a034..92c900a 100644 (file)
--- a/drivers/block/ublk_drv.c
+++ b/drivers/block/ublk_drv.c
@@ -447,9 +447,9 @@ static void ublk_store_owner_uid_gid(unsigned int *owner_uid,
        *owner_gid = from_kgid(&init_user_ns, gid);
 }
 
-static int ublk_open(struct block_device *bdev, fmode_t mode)
+static int ublk_open(struct gendisk *disk, fmode_t mode)
 {
-       struct ublk_device *ub = bdev->bd_disk->private_data;
+       struct ublk_device *ub = disk->private_data;
 
        if (capable(CAP_SYS_ADMIN))
                return 0;

diff --git a/drivers/block/z2ram.c b/drivers/block/z2ram.c
index c1e85f3..a5575e0 100644 (file)
--- a/drivers/block/z2ram.c
+++ b/drivers/block/z2ram.c
@@ -140,16 +140,14 @@ static void get_chipram(void)
        return;
 }
 
-static int z2_open(struct block_device *bdev, fmode_t mode)
+static int z2_open(struct gendisk *disk, fmode_t mode)
 {
-       int device;
+       int device = disk->first_minor;
        int max_z2_map = (Z2RAM_SIZE / Z2RAM_CHUNKSIZE) * sizeof(z2ram_map[0]);
        int max_chip_map = (amiga_chip_size / Z2RAM_CHUNKSIZE) *
            sizeof(z2ram_map[0]);
        int rc = -ENOMEM;
 
-       device = MINOR(bdev->bd_dev);
-
        mutex_lock(&z2ram_mutex);
        if (current_device != -1 && current_device != device) {
                rc = -EBUSY;

diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 0bc7794..f5644c6 100644 (file)
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -2097,19 +2097,16 @@ static ssize_t reset_store(struct device *dev,
        return len;
 }
 
-static int zram_open(struct block_device *bdev, fmode_t mode)
+static int zram_open(struct gendisk *disk, fmode_t mode)
 {
-       int ret = 0;
-       struct zram *zram;
+       struct zram *zram = disk->private_data;
 
-       WARN_ON(!mutex_is_locked(&bdev->bd_disk->open_mutex));
+       WARN_ON(!mutex_is_locked(&disk->open_mutex));
 
-       zram = bdev->bd_disk->private_data;
        /* zram was claimed to reset so open request fails */
        if (zram->claim)
-               ret = -EBUSY;
-
-       return ret;
+               return -EBUSY;
+       return 0;
 }
 
 static const struct block_device_operations zram_devops = {

diff --git a/drivers/cdrom/gdrom.c b/drivers/cdrom/gdrom.c
index 3cb92df..d35dd71 100644 (file)
--- a/drivers/cdrom/gdrom.c
+++ b/drivers/cdrom/gdrom.c
@@ -474,11 +474,11 @@ static const struct cdrom_device_ops gdrom_ops = {
                                  CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R,
 };
 
-static int gdrom_bdops_open(struct block_device *bdev, fmode_t mode)
+static int gdrom_bdops_open(struct gendisk *disk, fmode_t mode)
 {
        int ret;
 
-       disk_check_media_change(bdev->bd_disk);
+       disk_check_media_change(disk);
 
        mutex_lock(&gdrom_mutex);
        ret = cdrom_open(gd.cd_info);

diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index d84c09a..6683f66 100644 (file)
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -732,9 +732,9 @@ out:
 
 /* Bcache device */
 
-static int open_dev(struct block_device *b, fmode_t mode)
+static int open_dev(struct gendisk *disk, fmode_t mode)
 {
-       struct bcache_device *d = b->bd_disk->private_data;
+       struct bcache_device *d = disk->private_data;
 
        if (test_bit(BCACHE_DEV_CLOSING, &d->flags))
                return -ENXIO;

diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index d759f8b..06047a0 100644 (file)
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -310,13 +310,13 @@ int dm_deleting_md(struct mapped_device *md)
        return test_bit(DMF_DELETING, &md->flags);
 }
 
-static int dm_blk_open(struct block_device *bdev, fmode_t mode)
+static int dm_blk_open(struct gendisk *disk, fmode_t mode)
 {
        struct mapped_device *md;
 
        spin_lock(&_minor_lock);
 
-       md = bdev->bd_disk->private_data;
+       md = disk->private_data;
        if (!md)
                goto out;
 

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 77046c9..aba1383 100644 (file)
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -7767,13 +7767,13 @@ out_unlock:
        return err;
 }
 
-static int md_open(struct block_device *bdev, fmode_t mode)
+static int md_open(struct gendisk *disk, fmode_t mode)
 {
        struct mddev *mddev;
        int err;
 
        spin_lock(&all_mddevs_lock);
-       mddev = mddev_get(bdev->bd_disk->private_data);
+       mddev = mddev_get(disk->private_data);
        spin_unlock(&all_mddevs_lock);
        if (!mddev)
                return -ENODEV;
@@ -7789,7 +7789,7 @@ static int md_open(struct block_device *bdev, fmode_t mode)
        atomic_inc(&mddev->openers);
        mutex_unlock(&mddev->open_mutex);
 
-       disk_check_media_change(bdev->bd_disk);
+       disk_check_media_change(disk);
        return 0;
 
 out_unlock:

diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c
index 00c33ed..fe21765 100644 (file)
--- a/drivers/mmc/core/block.c
+++ b/drivers/mmc/core/block.c
@@ -357,9 +357,9 @@ static const struct attribute_group *mmc_disk_attr_groups[] = {
        NULL,
 };
 
-static int mmc_blk_open(struct block_device *bdev, fmode_t mode)
+static int mmc_blk_open(struct gendisk *disk, fmode_t mode)
 {
-       struct mmc_blk_data *md = mmc_blk_get(bdev->bd_disk);
+       struct mmc_blk_data *md = mmc_blk_get(disk);
        int ret = -ENXIO;
 
        mutex_lock(&block_mutex);

diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index 60b2227..95f3ee6 100644 (file)
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -182,9 +182,9 @@ static blk_status_t mtd_queue_rq(struct blk_mq_hw_ctx *hctx,
        return BLK_STS_OK;
 }
 
-static int blktrans_open(struct block_device *bdev, fmode_t mode)
+static int blktrans_open(struct gendisk *disk, fmode_t mode)
 {
-       struct mtd_blktrans_dev *dev = bdev->bd_disk->private_data;
+       struct mtd_blktrans_dev *dev = disk->private_data;
        int ret = 0;
 
        kref_get(&dev->ref);

diff --git a/drivers/mtd/ubi/block.c b/drivers/mtd/ubi/block.c
index 3711d7f..2f34429 100644 (file)
--- a/drivers/mtd/ubi/block.c
+++ b/drivers/mtd/ubi/block.c
@@ -227,9 +227,9 @@ static blk_status_t ubiblock_read(struct request *req)
        return BLK_STS_OK;
 }
 
-static int ubiblock_open(struct block_device *bdev, fmode_t mode)
+static int ubiblock_open(struct gendisk *disk, fmode_t mode)
 {
-       struct ubiblock *dev = bdev->bd_disk->private_data;
+       struct ubiblock *dev = disk->private_data;
        int ret;
 
        mutex_lock(&dev->dev_mutex);

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index ccb6eb1..b1c8af5 100644 (file)
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1591,9 +1591,9 @@ static void nvme_ns_release(struct nvme_ns *ns)
        nvme_put_ns(ns);
 }
 
-static int nvme_open(struct block_device *bdev, fmode_t mode)
+static int nvme_open(struct gendisk *disk, fmode_t mode)
 {
-       return nvme_ns_open(bdev->bd_disk->private_data);
+       return nvme_ns_open(disk->private_data);
 }
 
 static void nvme_release(struct gendisk *disk, fmode_t mode)

diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c
index 9171452..e8d5d62 100644 (file)
--- a/drivers/nvme/host/multipath.c
+++ b/drivers/nvme/host/multipath.c
@@ -402,9 +402,9 @@ static void nvme_ns_head_submit_bio(struct bio *bio)
        srcu_read_unlock(&head->srcu, srcu_idx);
 }
 
-static int nvme_ns_head_open(struct block_device *bdev, fmode_t mode)
+static int nvme_ns_head_open(struct gendisk *disk, fmode_t mode)
 {
-       if (!nvme_tryget_ns_head(bdev->bd_disk->private_data))
+       if (!nvme_tryget_ns_head(disk->private_data))
                return -ENXIO;
        return 0;
 }

diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 9fbfce7..e445b5f 100644 (file)
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -3234,12 +3234,12 @@ struct blk_mq_ops dasd_mq_ops = {
        .exit_hctx = dasd_exit_hctx,
 };
 
-static int dasd_open(struct block_device *bdev, fmode_t mode)
+static int dasd_open(struct gendisk *disk, fmode_t mode)
 {
        struct dasd_device *base;
        int rc;
 
-       base = dasd_device_from_gendisk(bdev->bd_disk);
+       base = dasd_device_from_gendisk(disk);
        if (!base)
                return -ENODEV;
 

diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c
index c09f2e0..6150d20 100644 (file)
--- a/drivers/s390/block/dcssblk.c
+++ b/drivers/s390/block/dcssblk.c
@@ -28,7 +28,7 @@
 #define DCSSBLK_PARM_LEN 400
 #define DCSS_BUS_ID_SIZE 20
 
-static int dcssblk_open(struct block_device *bdev, fmode_t mode);
+static int dcssblk_open(struct gendisk *disk, fmode_t mode);
 static void dcssblk_release(struct gendisk *disk, fmode_t mode);
 static void dcssblk_submit_bio(struct bio *bio);
 static long dcssblk_dax_direct_access(struct dax_device *dax_dev, pgoff_t pgoff,
@@ -809,12 +809,11 @@ out_buf:
 }
 
 static int
-dcssblk_open(struct block_device *bdev, fmode_t mode)
+dcssblk_open(struct gendisk *disk, fmode_t mode)
 {
-       struct dcssblk_dev_info *dev_info;
+       struct dcssblk_dev_info *dev_info = disk->private_data;
        int rc;
 
-       dev_info = bdev->bd_disk->private_data;
        if (NULL == dev_info) {
                rc = -ENODEV;
                goto out;

diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index aab649d..c31a675 100644 (file)
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1297,7 +1297,7 @@ static bool sd_need_revalidate(struct gendisk *disk, struct scsi_disk *sdkp)
 
 /**
  *     sd_open - open a scsi disk device
- *     @bdev: Block device of the scsi disk to open
+ *     @disk: disk to open
  *     @mode: FMODE_* mask
  *
  *     Returns 0 if successful. Returns a negated errno value in case 
@@ -1308,11 +1308,11 @@ static bool sd_need_revalidate(struct gendisk *disk, struct scsi_disk *sdkp)
  *     In the latter case @inode and @filp carry an abridged amount
  *     of information as noted above.
  *
- *     Locking: called with bdev->bd_disk->open_mutex held.
+ *     Locking: called with disk->open_mutex held.
  **/
-static int sd_open(struct block_device *bdev, fmode_t mode)
+static int sd_open(struct gendisk *disk, fmode_t mode)
 {
-       struct scsi_disk *sdkp = scsi_disk(bdev->bd_disk);
+       struct scsi_disk *sdkp = scsi_disk(disk);
        struct scsi_device *sdev = sdkp->device;
        int retval;
 
@@ -1329,8 +1329,8 @@ static int sd_open(struct block_device *bdev, fmode_t mode)
        if (!scsi_block_when_processing_errors(sdev))
                goto error_out;
 
-       if (sd_need_revalidate(bdev->bd_disk, sdkp))
-               sd_revalidate_disk(bdev->bd_disk);
+       if (sd_need_revalidate(disk, sdkp))
+               sd_revalidate_disk(disk);
 
        /*
         * If the drive is empty, just let the open fail.

diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index 1592e6e..3ff3a2f 100644 (file)
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -484,9 +484,9 @@ static void sr_revalidate_disk(struct scsi_cd *cd)
        get_sectorsize(cd);
 }
 
-static int sr_block_open(struct block_device *bdev, fmode_t mode)
+static int sr_block_open(struct gendisk *disk, fmode_t mode)
 {
-       struct scsi_cd *cd = scsi_cd(bdev->bd_disk);
+       struct scsi_cd *cd = scsi_cd(disk);
        struct scsi_device *sdev = cd->device;
        int ret;
 
@@ -494,7 +494,7 @@ static int sr_block_open(struct block_device *bdev, fmode_t mode)
                return -ENXIO;
 
        scsi_autopm_get_device(sdev);
-       if (disk_check_media_change(bdev->bd_disk))
+       if (disk_check_media_change(disk))
                sr_revalidate_disk(cd);
 
        mutex_lock(&cd->lock);

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index a1688eb..1366eea 100644 (file)
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1386,7 +1386,7 @@ struct block_device_operations {
        void (*submit_bio)(struct bio *bio);
        int (*poll_bio)(struct bio *bio, struct io_comp_batch *iob,
                        unsigned int flags);
-       int (*open) (struct block_device *, fmode_t);
+       int (*open)(struct gendisk *disk, fmode_t mode);
        void (*release) (struct gendisk *, fmode_t);
        int (*ioctl) (struct block_device *, fmode_t, unsigned, unsigned long);
        int (*compat_ioctl) (struct block_device *, fmode_t, unsigned, unsigned long);