[08/30] block: pass a gendisk to ->open

Message ID	20230608110258.189493-9-hch@lst.de (mailing list archive)
State	Under Review
Headers	show Return-Path: <linux-fsdevel-owner@vger.kernel.org> From: Christoph Hellwig <hch@lst.de> To: Jens Axboe <axboe@kernel.dk> Cc: Richard Weinberger <richard@nod.at>, Josef Bacik <josef@toxicpanda.com>, "Md. Haris Iqbal" <haris.iqbal@ionos.com>, Jack Wang <jinpu.wang@ionos.com>, Phillip Potter <phil@philpotter.co.uk>, Coly Li <colyli@suse.de>, Miquel Raynal <miquel.raynal@bootlin.com>, Vignesh Raghavendra <vigneshr@ti.com>, "Martin K. Petersen" <martin.petersen@oracle.com>, Chris Mason <clm@fb.com>, David Sterba <dsterba@suse.com>, Alexander Viro <viro@zeniv.linux.org.uk>, Christian Brauner <brauner@kernel.org>, "Rafael J. Wysocki" <rafael@kernel.org>, Pavel Machek <pavel@ucw.cz>, dm-devel@redhat.com, linux-block@vger.kernel.org, linux-um@lists.infradead.org, linux-scsi@vger.kernel.org, linux-bcache@vger.kernel.org, linux-mtd@lists.infradead.org, linux-nvme@lists.infradead.org, linux-btrfs@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-nilfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-pm@vger.kernel.org, Hannes Reinecke <hare@suse.de> Subject: [PATCH 08/30] block: pass a gendisk to ->open Date: Thu, 8 Jun 2023 13:02:36 +0200 Message-Id: <20230608110258.189493-9-hch@lst.de> In-Reply-To: <20230608110258.189493-1-hch@lst.de> References: <20230608110258.189493-1-hch@lst.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk
Series	[01/30] block: also call ->open for incremental partition opens \| expand [01/30] block: also call ->open for incremental partition opens [02/30] cdrom: remove the unused bdev argument to cdrom_open [03/30] cdrom: remove the unused mode argument to cdrom_ioctl [04/30] cdrom: remove the unused cdrom_close_write release code [05/30] cdrom: track if a cdrom_device_info was opened for data [06/30] cdrom: remove the unused mode argument to cdrom_release [07/30] block: pass a gendisk on bdev_check_media_change [08/30] block: pass a gendisk to ->open [09/30] block: remove the unused mode argument to ->release [10/30] block: rename blkdev_close to blkdev_release [11/30] swsusp: don't pass a stack address to blkdev_get_by_path [12/30] bcache: don't pass a stack address to blkdev_get_by_path [13/30] rnbd-srv: don't pass a holder for non-exclusive blkdev_get_by_path [14/30] btrfs: don't pass a holder for non-exclusive blkdev_get_by_path [15/30] block: use the holder as indication for exclusive opens [16/30] block: add a sb_open_mode helper [17/30] fs: remove sb->s_mode [18/30] scsi: replace the fmode_t argument to scsi_cmd_allowed with a simple bool [19/30] scsi: replace the fmode_t argument to scsi_ioctl with a simple bool [20/30] scsi: replace the fmode_t argument to ->sg_io_fn with a simple bool [21/30] nvme: replace the fmode_t argument to the nvme ioctl handlers with a simple bool [22/30] mtd: block: use a simple bool to track open for write [23/30] rnbd-srv: replace sess->open_flags with a "bool readonly" [24/30] ubd: remove commented out code in ubd_open [25/30] block: move a few internal definitions out of blkdev.h [26/30] block: remove unused fmode_t arguments from ioctl handlers [27/30] block: replace fmode_t with a block-specific type for block open flags [28/30] block: always use I_BDEV on file->f_mapping->host to find the bdev [29/30] block: store the holder in file->private_data [30/30] fs: remove the now unused FMODE_* flags

diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c index f4c1e6e97ad520..6b831f82881bc4 100644 --- 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 f50caaa1c2496e..38f95f79a1270c 100644 --- 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 981f6135795138..8a5fded303d4ed 100644 --- 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 6de12b311749a1..0cf2e58294be68 100644 --- 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 128722cf6c3cad..4ca6bbb326d5de 100644 --- 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 da481ddbca90db..4febd52be78cfc 100644 --- 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 54223f64610a05..8b6c19460f3425 100644 --- 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 3accafcbc95c85..ef3bbb7c185b56 100644 --- 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 @@ static int floppy_open(struct block_device *bdev, fmode_t mode) 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 6457a094abcc14..14202b6a3550cc 100644 --- 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 af1140548adb66..93478d5a3fc407 100644 --- 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 84ad3b17956f67..93231061db2f2b 100644 --- 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 5eb8c7855970d1..8ec00f4caf6b4c 100644 --- 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 105bc5fd1b8c62..7ec8554187f7d7 100644 --- 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 @@ static int floppy_open(struct block_device *bdev, fmode_t mode) 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 3d689ba312f568..c05a4e110d5275 100644 --- 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 222a0341913ffb..92c900ac2ebcb6 100644 --- 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 c1e85f356e4dfb..a5575e012e291e 100644 --- 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 0bc779446c6f8f..f5644c60604070 100644 --- 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 3cb92df38ebeb8..d35dd717e9fca9 100644 --- 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 d84c09a73af803..6683f66e701136 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -732,9 +732,9 @@ static int prio_read(struct cache *ca, uint64_t bucket) /* 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 d759f8bdb3df2f..06047a0ca4b315 100644 --- 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 77046c91bea439..aba13830bdb556 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -7767,13 +7767,13 @@ static int md_set_read_only(struct block_device *bdev, bool ro) 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 00c33edb9fb94e..fe217658705d1f 100644 --- 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 60b222799871e8..95f3ee6bde8440 100644 --- 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 3711d7f746003d..2f3442963919fc 100644 --- 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 ccb6eb1282f82d..b1c8af5d9376ad 100644 --- 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 9171452e2f6d4e..e8d5d62efa6d7c 100644 --- 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 9fbfce735d5650..e445b5fbd7fd27 100644 --- 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 c09f2e053bf863..6150d20b584300 100644 --- 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 @@ dcssblk_remove_store(struct device *dev, struct device_attribute *attr, const ch } 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 aab649d5bad3f8..c31a675db015e8 100644 --- 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 1592e6e10c7452..3ff3a2f9604774 100644 --- 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 a1688eba7e5e9a..1366eea881860e 100644 --- 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);

[08/30] block: pass a gendisk to ->open

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Patch