``capability`` is a bitfield, printed in hexadecimal, indicating which
capabilities a specific block device supports:
-.. kernel-doc:: include/linux/genhd.h
+.. kernel-doc:: include/linux/blkdev.h
#include <linux/types.h>
#include <linux/kdev_t.h>
-#include <linux/genhd.h>
#include <linux/sched.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/linkage.h>
#include <linux/init.h>
#include <linux/major.h>
-#include <linux/genhd.h>
#include <linux/rtc.h>
#include <linux/interrupt.h>
#include <linux/bcd.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/types.h>
-#include <linux/genhd.h>
#include <linux/blkdev.h>
#include <linux/hdreg.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/fs.h>
#include <linux/console.h>
-#include <linux/genhd.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/init.h>
#include <linux/linkage.h>
#include <linux/init.h>
#include <linux/major.h>
-#include <linux/genhd.h>
#include <linux/rtc.h>
#include <linux/interrupt.h>
#include <linux/linkage.h>
#include <linux/init.h>
#include <linux/major.h>
-#include <linux/genhd.h>
#include <linux/rtc.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/blkdev.h>
#include <linux/backing-dev.h>
#include <linux/slab.h>
-#include <linux/genhd.h>
#include <linux/delay.h>
#include <linux/atomic.h>
#include <linux/ctype.h>
*/
#include <linux/export.h>
#include <linux/moduleparam.h>
-#include <linux/genhd.h>
+#include <linux/blkdev.h>
#include "blk.h"
struct disk_events {
#include <linux/module.h>
#include <linux/ctype.h>
#include <linux/fs.h>
-#include <linux/genhd.h>
#include <linux/kdev_t.h>
#include <linux/kernel.h>
#include <linux/blkdev.h>
// SPDX-License-Identifier: GPL-2.0-only
-#include <linux/genhd.h>
+#include <linux/blkdev.h>
#include <linux/slab.h>
struct bd_holder_disk {
/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/pagemap.h>
#include <linux/blkdev.h>
-#include <linux/genhd.h>
#include "../blk.h"
/*
#include <linux/major.h>
#include <linux/slab.h>
#include <linux/ctype.h>
-#include <linux/genhd.h>
#include <linux/vmalloc.h>
#include <linux/blktrace_api.h>
#include <linux/raid/detect.h>
#include <linux/types.h>
#include <linux/fs.h>
-#include <linux/genhd.h>
#include <linux/kernel.h>
#include <linux/major.h>
#include <linux/string.h>
#include <linux/types.h>
#include <linux/list.h>
-#include <linux/genhd.h>
#include <linux/fs.h>
#include <asm/unaligned.h>
#include <asm/byteorder.h>
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/list.h>
-#include <linux/genhd.h>
+#include <linux/blkdev.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <uapi/linux/sed-opal.h>
#include <linux/kdev_t.h>
#include <linux/err.h>
#include <linux/slab.h>
-#include <linux/genhd.h>
+#include <linux/blkdev.h>
#include <linux/mutex.h>
#include "base.h"
#include <linux/notifier.h>
#include <linux/of.h>
#include <linux/of_device.h>
-#include <linux/genhd.h>
+#include <linux/blkdev.h>
#include <linux/mutex.h>
#include <linux/pm_runtime.h>
#include <linux/netdevice.h>
#include <linux/syscalls.h>
#include <linux/mount.h>
#include <linux/device.h>
-#include <linux/genhd.h>
+#include <linux/blkdev.h>
#include <linux/namei.h>
#include <linux/fs.h>
#include <linux/shmem_fs.h>
#include <linux/ioctl.h>
#include <linux/slab.h>
#include <linux/ratelimit.h>
-#include <linux/genhd.h>
#include <linux/netdevice.h>
#include <linux/mutex.h>
#include <linux/export.h>
#include <linux/blk-mq.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
-#include <linux/genhd.h>
#include <linux/moduleparam.h>
#include <linux/workqueue.h>
#include <linux/kthread.h>
#include <linux/major.h>
#include <linux/blkdev.h>
#include <linux/backing-dev.h>
-#include <linux/genhd.h>
#include <linux/idr.h>
#include <linux/dynamic_debug.h>
#include <net/tcp.h>
#include <linux/compat.h>
#include <linux/fs.h>
#include <linux/module.h>
-#include <linux/genhd.h>
#include <linux/blkdev.h>
#include <linux/blk-mq.h>
#include <linux/bio.h>
#include <linux/rwsem.h>
#include <linux/ata.h>
#include <linux/interrupt.h>
-#include <linux/genhd.h>
/* Offset of Subsystem Device ID in pci confoguration space */
#define PCI_SUBSYSTEM_DEVICEID 0x2E
#include <linux/kobject.h>
#include <linux/sysfs.h>
#include <linux/stat.h>
-#include <linux/genhd.h>
#include <linux/list.h>
#include <linux/moduleparam.h>
#include <linux/device.h>
#include <linux/types.h>
#include <linux/blk-mq.h>
#include <linux/hdreg.h>
-#include <linux/genhd.h>
#include <linux/cdrom.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/blkdev.h>
#include <linux/buffer_head.h>
#include <linux/device.h>
-#include <linux/genhd.h>
#include <linux/highmem.h>
#include <linux/slab.h>
#include <linux/backing-dev.h>
#include <linux/slab.h>
#include <linux/dma-mapping.h>
#include <linux/cdrom.h>
-#include <linux/genhd.h>
#include <linux/bio.h>
#include <linux/blk-mq.h>
#include <linux/interrupt.h>
#include <linux/poll.h>
#include <linux/init.h>
#include <linux/fs.h>
-#include <linux/genhd.h>
+#include <linux/blkdev.h>
#include <linux/interrupt.h>
#include <linux/mm.h>
#include <linux/nodemask.h>
#include <linux/blkdev.h>
#include <linux/pagemap.h>
#include <linux/debugfs.h>
-#include <linux/genhd.h>
#include <linux/idr.h>
#include <linux/kthread.h>
#include <linux/workqueue.h>
#include <linux/kthread.h>
#include <linux/ktime.h>
-#include <linux/genhd.h>
#include <linux/blk-mq.h>
#include <linux/blk-crypto-profile.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
-#include <linux/genhd.h>
+#include <linux/blkdev.h>
#include <linux/swap.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
* Based on Sharp's NAND driver sharp_sl.c
*/
-#include <linux/genhd.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/blkdev.h>
#include <linux/fs.h>
-#include <linux/genhd.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/nd.h>
#include <linux/device.h>
#include <linux/mutex.h>
#include <linux/hdreg.h>
-#include <linux/genhd.h>
#include <linux/sizes.h>
#include <linux/ndctl.h>
#include <linux/fs.h>
*/
#include <linux/blkdev.h>
#include <linux/device.h>
-#include <linux/genhd.h>
#include <linux/sizes.h>
#include <linux/slab.h>
#include <linux/fs.h>
#include <linux/blkdev.h>
#include <linux/fcntl.h>
#include <linux/async.h>
-#include <linux/genhd.h>
#include <linux/ndctl.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/memremap.h>
#include <linux/blkdev.h>
#include <linux/device.h>
-#include <linux/genhd.h>
#include <linux/sizes.h>
#include <linux/slab.h>
#include <linux/fs.h>
#include <linux/module.h>
#include <linux/wait.h>
#include <linux/blkdev.h>
-#include <linux/genhd.h>
#include <linux/hdreg.h>
#include <linux/interrupt.h>
#include <linux/log2.h>
#include <linux/module.h>
#include <linux/blkdev.h>
#include <linux/blk-mq.h>
-#include <linux/genhd.h>
#include <linux/slab.h>
#include <linux/list.h>
#include <asm/eadm.h>
#include <linux/spinlock.h>
#include <linux/blkdev.h>
#include <linux/blk-mq.h>
-#include <linux/genhd.h>
#include <linux/list.h>
#include <asm/debug.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/string.h>
-#include <linux/genhd.h>
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/proc_fs.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/fs.h>
-#include <linux/genhd.h>
#include <linux/kernel.h>
#include <linux/blkdev.h>
#include <linux/pagemap.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/bio.h>
-#include <linux/genhd.h>
#include <linux/hdreg.h>
#include <linux/errno.h>
#include <linux/idr.h>
#ifndef _SR_H
#define _SR_H
-#include <linux/genhd.h>
#include <linux/kref.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/bio.h>
-#include <linux/genhd.h>
#include <linux/file.h>
#include <linux/module.h>
#include <linux/scatterlist.h>
#include <linux/blk_types.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
-#include <linux/genhd.h>
#include <linux/cdrom.h>
#include <linux/ratelimit.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/mutex.h>
-#include <linux/genhd.h>
#include <linux/blkdev.h>
#include <linux/mm.h>
#include <linux/string.h>
#include <linux/buffer_head.h>
#include <linux/dax.h>
#include <linux/fs.h>
-#include <linux/genhd.h>
#include <linux/highmem.h>
#include <linux/memcontrol.h>
#include <linux/mm.h>
#include <linux/kobject.h>
#include <linux/uaccess.h>
#include <linux/gfs2_ondisk.h>
-#include <linux/genhd.h>
+#include <linux/blkdev.h>
#include "gfs2.h"
#include "incore.h"
*/
#include <linux/cdrom.h>
-#include <linux/genhd.h>
+#include <linux/blkdev.h>
#include <linux/nls.h>
#include <linux/slab.h>
#include <linux/fs.h>
#include <linux/blkdev.h>
#include <linux/cdrom.h>
-#include <linux/genhd.h>
#include <asm/unaligned.h>
#include "hfsplus_fs.h"
#include <linux/writeback.h>
#include <linux/xattr.h>
#include <linux/falloc.h>
-#include <linux/genhd.h>
#include <linux/fsnotify.h>
#include <linux/dcache.h>
#include <linux/slab.h>
*/
#include <linux/module.h>
-#include <linux/genhd.h>
#include <linux/blkdev.h>
#include "blocklayout.h"
*/
#include <linux/exportfs.h>
#include <linux/iomap.h>
-#include <linux/genhd.h>
#include <linux/slab.h>
#include <linux/pr.h>
/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Portions Copyright (C) 1992 Drew Eckhardt
+ */
#ifndef _LINUX_BLKDEV_H
#define _LINUX_BLKDEV_H
-#include <linux/sched.h>
-#include <linux/genhd.h>
+#include <linux/types.h>
+#include <linux/blk_types.h>
+#include <linux/device.h>
#include <linux/list.h>
#include <linux/llist.h>
#include <linux/minmax.h>
#include <linux/wait.h>
#include <linux/bio.h>
#include <linux/gfp.h>
+#include <linux/kdev_t.h>
#include <linux/rcupdate.h>
#include <linux/percpu-refcount.h>
#include <linux/blkzoned.h>
+#include <linux/sched.h>
#include <linux/sbitmap.h>
#include <linux/srcu.h>
+#include <linux/uuid.h>
+#include <linux/xarray.h>
struct module;
struct request_queue;
struct blk_stat_callback;
struct blk_crypto_profile;
+extern const struct device_type disk_type;
+extern struct device_type part_type;
+extern struct class block_class;
+
/* Must be consistent with blk_mq_poll_stats_bkt() */
#define BLK_MQ_POLL_STATS_BKTS 16
*/
#define BLKCG_MAX_POLS 6
+#define DISK_MAX_PARTS 256
+#define DISK_NAME_LEN 32
+
+#define PARTITION_META_INFO_VOLNAMELTH 64
+/*
+ * Enough for the string representation of any kind of UUID plus NULL.
+ * EFI UUID is 36 characters. MSDOS UUID is 11 characters.
+ */
+#define PARTITION_META_INFO_UUIDLTH (UUID_STRING_LEN + 1)
+
+struct partition_meta_info {
+ char uuid[PARTITION_META_INFO_UUIDLTH];
+ u8 volname[PARTITION_META_INFO_VOLNAMELTH];
+};
+
+/**
+ * DOC: genhd capability flags
+ *
+ * ``GENHD_FL_REMOVABLE``: indicates that the block device gives access to
+ * removable media. When set, the device remains present even when media is not
+ * inserted. Shall not be set for devices which are removed entirely when the
+ * media is removed.
+ *
+ * ``GENHD_FL_HIDDEN``: the block device is hidden; it doesn't produce events,
+ * doesn't appear in sysfs, and can't be opened from userspace or using
+ * blkdev_get*. Used for the underlying components of multipath devices.
+ *
+ * ``GENHD_FL_NO_PART``: partition support is disabled. The kernel will not
+ * scan for partitions from add_disk, and users can't add partitions manually.
+ *
+ */
+enum {
+ GENHD_FL_REMOVABLE = 1 << 0,
+ GENHD_FL_HIDDEN = 1 << 1,
+ GENHD_FL_NO_PART = 1 << 2,
+};
+
+enum {
+ DISK_EVENT_MEDIA_CHANGE = 1 << 0, /* media changed */
+ DISK_EVENT_EJECT_REQUEST = 1 << 1, /* eject requested */
+};
+
+enum {
+ /* Poll even if events_poll_msecs is unset */
+ DISK_EVENT_FLAG_POLL = 1 << 0,
+ /* Forward events to udev */
+ DISK_EVENT_FLAG_UEVENT = 1 << 1,
+ /* Block event polling when open for exclusive write */
+ DISK_EVENT_FLAG_BLOCK_ON_EXCL_WRITE = 1 << 2,
+};
+
+struct disk_events;
+struct badblocks;
+
+struct blk_integrity {
+ const struct blk_integrity_profile *profile;
+ unsigned char flags;
+ unsigned char tuple_size;
+ unsigned char interval_exp;
+ unsigned char tag_size;
+};
+
+struct gendisk {
+ /*
+ * major/first_minor/minors should not be set by any new driver, the
+ * block core will take care of allocating them automatically.
+ */
+ int major;
+ int first_minor;
+ int minors;
+
+ char disk_name[DISK_NAME_LEN]; /* name of major driver */
+
+ unsigned short events; /* supported events */
+ unsigned short event_flags; /* flags related to event processing */
+
+ struct xarray part_tbl;
+ struct block_device *part0;
+
+ const struct block_device_operations *fops;
+ struct request_queue *queue;
+ void *private_data;
+
+ int flags;
+ unsigned long state;
+#define GD_NEED_PART_SCAN 0
+#define GD_READ_ONLY 1
+#define GD_DEAD 2
+#define GD_NATIVE_CAPACITY 3
+
+ struct mutex open_mutex; /* open/close mutex */
+ unsigned open_partitions; /* number of open partitions */
+
+ struct backing_dev_info *bdi;
+ struct kobject *slave_dir;
+#ifdef CONFIG_BLOCK_HOLDER_DEPRECATED
+ struct list_head slave_bdevs;
+#endif
+ struct timer_rand_state *random;
+ atomic_t sync_io; /* RAID */
+ struct disk_events *ev;
+#ifdef CONFIG_BLK_DEV_INTEGRITY
+ struct kobject integrity_kobj;
+#endif /* CONFIG_BLK_DEV_INTEGRITY */
+#if IS_ENABLED(CONFIG_CDROM)
+ struct cdrom_device_info *cdi;
+#endif
+ int node_id;
+ struct badblocks *bb;
+ struct lockdep_map lockdep_map;
+ u64 diskseq;
+};
+
+static inline bool disk_live(struct gendisk *disk)
+{
+ return !inode_unhashed(disk->part0->bd_inode);
+}
+
+/*
+ * The gendisk is refcounted by the part0 block_device, and the bd_device
+ * therein is also used for device model presentation in sysfs.
+ */
+#define dev_to_disk(device) \
+ (dev_to_bdev(device)->bd_disk)
+#define disk_to_dev(disk) \
+ (&((disk)->part0->bd_device))
+
+#if IS_REACHABLE(CONFIG_CDROM)
+#define disk_to_cdi(disk) ((disk)->cdi)
+#else
+#define disk_to_cdi(disk) NULL
+#endif
+
+static inline dev_t disk_devt(struct gendisk *disk)
+{
+ return MKDEV(disk->major, disk->first_minor);
+}
+
static inline int blk_validate_block_size(unsigned long bsize)
{
if (bsize < 512 || bsize > PAGE_SIZE || !is_power_of_2(bsize))
#define for_each_bio(_bio) \
for (; _bio; _bio = _bio->bi_next)
+int __must_check device_add_disk(struct device *parent, struct gendisk *disk,
+ const struct attribute_group **groups);
+static inline int __must_check add_disk(struct gendisk *disk)
+{
+ return device_add_disk(NULL, disk, NULL);
+}
+void del_gendisk(struct gendisk *gp);
+void invalidate_disk(struct gendisk *disk);
+void set_disk_ro(struct gendisk *disk, bool read_only);
+void disk_uevent(struct gendisk *disk, enum kobject_action action);
+
+static inline int get_disk_ro(struct gendisk *disk)
+{
+ return disk->part0->bd_read_only ||
+ test_bit(GD_READ_ONLY, &disk->state);
+}
+
+static inline int bdev_read_only(struct block_device *bdev)
+{
+ return bdev->bd_read_only || get_disk_ro(bdev->bd_disk);
+}
+
+bool set_capacity_and_notify(struct gendisk *disk, sector_t size);
+bool disk_force_media_change(struct gendisk *disk, unsigned int events);
+
+void add_disk_randomness(struct gendisk *disk) __latent_entropy;
+void rand_initialize_disk(struct gendisk *disk);
+
+static inline sector_t get_start_sect(struct block_device *bdev)
+{
+ return bdev->bd_start_sect;
+}
+
+static inline sector_t bdev_nr_sectors(struct block_device *bdev)
+{
+ return bdev->bd_nr_sectors;
+}
+
+static inline loff_t bdev_nr_bytes(struct block_device *bdev)
+{
+ return (loff_t)bdev_nr_sectors(bdev) << SECTOR_SHIFT;
+}
+
+static inline sector_t get_capacity(struct gendisk *disk)
+{
+ return bdev_nr_sectors(disk->part0);
+}
+
+static inline u64 sb_bdev_nr_blocks(struct super_block *sb)
+{
+ return bdev_nr_sectors(sb->s_bdev) >>
+ (sb->s_blocksize_bits - SECTOR_SHIFT);
+}
+
+int bdev_disk_changed(struct gendisk *disk, bool invalidate);
+
+struct gendisk *__alloc_disk_node(struct request_queue *q, int node_id,
+ struct lock_class_key *lkclass);
+void put_disk(struct gendisk *disk);
+struct gendisk *__blk_alloc_disk(int node, struct lock_class_key *lkclass);
+
+/**
+ * blk_alloc_disk - allocate a gendisk structure
+ * @node_id: numa node to allocate on
+ *
+ * Allocate and pre-initialize a gendisk structure for use with BIO based
+ * drivers.
+ *
+ * Context: can sleep
+ */
+#define blk_alloc_disk(node_id) \
+({ \
+ static struct lock_class_key __key; \
+ \
+ __blk_alloc_disk(node_id, &__key); \
+})
+void blk_cleanup_disk(struct gendisk *disk);
+
+int __register_blkdev(unsigned int major, const char *name,
+ void (*probe)(dev_t devt));
+#define register_blkdev(major, name) \
+ __register_blkdev(major, name, NULL)
+void unregister_blkdev(unsigned int major, const char *name);
+
+bool bdev_check_media_change(struct block_device *bdev);
+int __invalidate_device(struct block_device *bdev, bool kill_dirty);
+void set_capacity(struct gendisk *disk, sector_t size);
+
+#ifdef CONFIG_BLOCK_HOLDER_DEPRECATED
+int bd_link_disk_holder(struct block_device *bdev, struct gendisk *disk);
+void bd_unlink_disk_holder(struct block_device *bdev, struct gendisk *disk);
+int bd_register_pending_holders(struct gendisk *disk);
+#else
+static inline int bd_link_disk_holder(struct block_device *bdev,
+ struct gendisk *disk)
+{
+ return 0;
+}
+static inline void bd_unlink_disk_holder(struct block_device *bdev,
+ struct gendisk *disk)
+{
+}
+static inline int bd_register_pending_holders(struct gendisk *disk)
+{
+ return 0;
+}
+#endif /* CONFIG_BLOCK_HOLDER_DEPRECATED */
+
+dev_t part_devt(struct gendisk *disk, u8 partno);
+void inc_diskseq(struct gendisk *disk);
+dev_t blk_lookup_devt(const char *name, int partno);
+void blk_request_module(dev_t devt);
extern int blk_register_queue(struct gendisk *disk);
extern void blk_unregister_queue(struct gendisk *disk);
int sync_blockdev(struct block_device *bdev);
int sync_blockdev_nowait(struct block_device *bdev);
void sync_bdevs(bool wait);
+void printk_all_partitions(void);
#else
static inline void invalidate_bdev(struct block_device *bdev)
{
static inline void sync_bdevs(bool wait)
{
}
-#endif
+static inline void printk_all_partitions(void)
+{
+}
+#endif /* CONFIG_BLOCK */
+
int fsync_bdev(struct block_device *bdev);
int freeze_bdev(struct block_device *bdev);
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _LINUX_GENHD_H
-#define _LINUX_GENHD_H
-
-/*
- * genhd.h Copyright (C) 1992 Drew Eckhardt
- * Generic hard disk header file by
- * Drew Eckhardt
- *
- * <drew@colorado.edu>
- */
-
-#include <linux/types.h>
-#include <linux/kdev_t.h>
-#include <linux/uuid.h>
-#include <linux/blk_types.h>
-#include <linux/device.h>
-#include <linux/xarray.h>
-
-extern const struct device_type disk_type;
-extern struct device_type part_type;
-extern struct class block_class;
-
-#define DISK_MAX_PARTS 256
-#define DISK_NAME_LEN 32
-
-#define PARTITION_META_INFO_VOLNAMELTH 64
-/*
- * Enough for the string representation of any kind of UUID plus NULL.
- * EFI UUID is 36 characters. MSDOS UUID is 11 characters.
- */
-#define PARTITION_META_INFO_UUIDLTH (UUID_STRING_LEN + 1)
-
-struct partition_meta_info {
- char uuid[PARTITION_META_INFO_UUIDLTH];
- u8 volname[PARTITION_META_INFO_VOLNAMELTH];
-};
-
-/**
- * DOC: genhd capability flags
- *
- * ``GENHD_FL_REMOVABLE``: indicates that the block device gives access to
- * removable media. When set, the device remains present even when media is not
- * inserted. Shall not be set for devices which are removed entirely when the
- * media is removed.
- *
- * ``GENHD_FL_HIDDEN``: the block device is hidden; it doesn't produce events,
- * doesn't appear in sysfs, and can't be opened from userspace or using
- * blkdev_get*. Used for the underlying components of multipath devices.
- *
- * ``GENHD_FL_NO_PART``: partition support is disabled. The kernel will not
- * scan for partitions from add_disk, and users can't add partitions manually.
- *
- */
-enum {
- GENHD_FL_REMOVABLE = 1 << 0,
- GENHD_FL_HIDDEN = 1 << 1,
- GENHD_FL_NO_PART = 1 << 2,
-};
-
-enum {
- DISK_EVENT_MEDIA_CHANGE = 1 << 0, /* media changed */
- DISK_EVENT_EJECT_REQUEST = 1 << 1, /* eject requested */
-};
-
-enum {
- /* Poll even if events_poll_msecs is unset */
- DISK_EVENT_FLAG_POLL = 1 << 0,
- /* Forward events to udev */
- DISK_EVENT_FLAG_UEVENT = 1 << 1,
- /* Block event polling when open for exclusive write */
- DISK_EVENT_FLAG_BLOCK_ON_EXCL_WRITE = 1 << 2,
-};
-
-struct disk_events;
-struct badblocks;
-
-struct blk_integrity {
- const struct blk_integrity_profile *profile;
- unsigned char flags;
- unsigned char tuple_size;
- unsigned char interval_exp;
- unsigned char tag_size;
-};
-
-struct gendisk {
- /*
- * major/first_minor/minors should not be set by any new driver, the
- * block core will take care of allocating them automatically.
- */
- int major;
- int first_minor;
- int minors;
-
- char disk_name[DISK_NAME_LEN]; /* name of major driver */
-
- unsigned short events; /* supported events */
- unsigned short event_flags; /* flags related to event processing */
-
- struct xarray part_tbl;
- struct block_device *part0;
-
- const struct block_device_operations *fops;
- struct request_queue *queue;
- void *private_data;
-
- int flags;
- unsigned long state;
-#define GD_NEED_PART_SCAN 0
-#define GD_READ_ONLY 1
-#define GD_DEAD 2
-#define GD_NATIVE_CAPACITY 3
-
- struct mutex open_mutex; /* open/close mutex */
- unsigned open_partitions; /* number of open partitions */
-
- struct backing_dev_info *bdi;
- struct kobject *slave_dir;
-#ifdef CONFIG_BLOCK_HOLDER_DEPRECATED
- struct list_head slave_bdevs;
-#endif
- struct timer_rand_state *random;
- atomic_t sync_io; /* RAID */
- struct disk_events *ev;
-#ifdef CONFIG_BLK_DEV_INTEGRITY
- struct kobject integrity_kobj;
-#endif /* CONFIG_BLK_DEV_INTEGRITY */
-#if IS_ENABLED(CONFIG_CDROM)
- struct cdrom_device_info *cdi;
-#endif
- int node_id;
- struct badblocks *bb;
- struct lockdep_map lockdep_map;
- u64 diskseq;
-};
-
-static inline bool disk_live(struct gendisk *disk)
-{
- return !inode_unhashed(disk->part0->bd_inode);
-}
-
-/*
- * The gendisk is refcounted by the part0 block_device, and the bd_device
- * therein is also used for device model presentation in sysfs.
- */
-#define dev_to_disk(device) \
- (dev_to_bdev(device)->bd_disk)
-#define disk_to_dev(disk) \
- (&((disk)->part0->bd_device))
-
-#if IS_REACHABLE(CONFIG_CDROM)
-#define disk_to_cdi(disk) ((disk)->cdi)
-#else
-#define disk_to_cdi(disk) NULL
-#endif
-
-static inline dev_t disk_devt(struct gendisk *disk)
-{
- return MKDEV(disk->major, disk->first_minor);
-}
-
-void disk_uevent(struct gendisk *disk, enum kobject_action action);
-
-/* block/genhd.c */
-int __must_check device_add_disk(struct device *parent, struct gendisk *disk,
- const struct attribute_group **groups);
-static inline int __must_check add_disk(struct gendisk *disk)
-{
- return device_add_disk(NULL, disk, NULL);
-}
-extern void del_gendisk(struct gendisk *gp);
-
-void invalidate_disk(struct gendisk *disk);
-
-void set_disk_ro(struct gendisk *disk, bool read_only);
-
-static inline int get_disk_ro(struct gendisk *disk)
-{
- return disk->part0->bd_read_only ||
- test_bit(GD_READ_ONLY, &disk->state);
-}
-
-static inline int bdev_read_only(struct block_device *bdev)
-{
- return bdev->bd_read_only || get_disk_ro(bdev->bd_disk);
-}
-
-bool set_capacity_and_notify(struct gendisk *disk, sector_t size);
-bool disk_force_media_change(struct gendisk *disk, unsigned int events);
-
-/* drivers/char/random.c */
-extern void add_disk_randomness(struct gendisk *disk) __latent_entropy;
-extern void rand_initialize_disk(struct gendisk *disk);
-
-static inline sector_t get_start_sect(struct block_device *bdev)
-{
- return bdev->bd_start_sect;
-}
-
-static inline sector_t bdev_nr_sectors(struct block_device *bdev)
-{
- return bdev->bd_nr_sectors;
-}
-
-static inline loff_t bdev_nr_bytes(struct block_device *bdev)
-{
- return (loff_t)bdev_nr_sectors(bdev) << SECTOR_SHIFT;
-}
-
-static inline sector_t get_capacity(struct gendisk *disk)
-{
- return bdev_nr_sectors(disk->part0);
-}
-
-static inline u64 sb_bdev_nr_blocks(struct super_block *sb)
-{
- return bdev_nr_sectors(sb->s_bdev) >>
- (sb->s_blocksize_bits - SECTOR_SHIFT);
-}
-
-int bdev_disk_changed(struct gendisk *disk, bool invalidate);
-
-struct gendisk *__alloc_disk_node(struct request_queue *q, int node_id,
- struct lock_class_key *lkclass);
-extern void put_disk(struct gendisk *disk);
-struct gendisk *__blk_alloc_disk(int node, struct lock_class_key *lkclass);
-
-/**
- * blk_alloc_disk - allocate a gendisk structure
- * @node_id: numa node to allocate on
- *
- * Allocate and pre-initialize a gendisk structure for use with BIO based
- * drivers.
- *
- * Context: can sleep
- */
-#define blk_alloc_disk(node_id) \
-({ \
- static struct lock_class_key __key; \
- \
- __blk_alloc_disk(node_id, &__key); \
-})
-void blk_cleanup_disk(struct gendisk *disk);
-
-int __register_blkdev(unsigned int major, const char *name,
- void (*probe)(dev_t devt));
-#define register_blkdev(major, name) \
- __register_blkdev(major, name, NULL)
-void unregister_blkdev(unsigned int major, const char *name);
-
-bool bdev_check_media_change(struct block_device *bdev);
-int __invalidate_device(struct block_device *bdev, bool kill_dirty);
-void set_capacity(struct gendisk *disk, sector_t size);
-
-#ifdef CONFIG_BLOCK_HOLDER_DEPRECATED
-int bd_link_disk_holder(struct block_device *bdev, struct gendisk *disk);
-void bd_unlink_disk_holder(struct block_device *bdev, struct gendisk *disk);
-int bd_register_pending_holders(struct gendisk *disk);
-#else
-static inline int bd_link_disk_holder(struct block_device *bdev,
- struct gendisk *disk)
-{
- return 0;
-}
-static inline void bd_unlink_disk_holder(struct block_device *bdev,
- struct gendisk *disk)
-{
-}
-static inline int bd_register_pending_holders(struct gendisk *disk)
-{
- return 0;
-}
-#endif /* CONFIG_BLOCK_HOLDER_DEPRECATED */
-
-dev_t part_devt(struct gendisk *disk, u8 partno);
-void inc_diskseq(struct gendisk *disk);
-dev_t blk_lookup_devt(const char *name, int partno);
-void blk_request_module(dev_t devt);
-#ifdef CONFIG_BLOCK
-void printk_all_partitions(void);
-#else /* CONFIG_BLOCK */
-static inline void printk_all_partitions(void)
-{
-}
-#endif /* CONFIG_BLOCK */
-
-#endif /* _LINUX_GENHD_H */
#ifndef _LINUX_PART_STAT_H
#define _LINUX_PART_STAT_H
-#include <linux/genhd.h>
+#include <linux/blkdev.h>
#include <asm/local.h>
struct disk_stats {
#include <linux/root_dev.h>
#include <linux/security.h>
#include <linux/delay.h>
-#include <linux/genhd.h>
#include <linux/mount.h>
#include <linux/device.h>
#include <linux/init.h>
#include <linux/gfp.h>
#include <linux/syscore_ops.h>
#include <linux/ctype.h>
-#include <linux/genhd.h>
#include <linux/ktime.h>
#include <linux/security.h>
#include <linux/secretmem.h>
#include <linux/file.h>
#include <linux/delay.h>
#include <linux/bitops.h>
-#include <linux/genhd.h>
#include <linux/device.h>
#include <linux/bio.h>
#include <linux/blkdev.h>
#include <linux/parser.h>
#include <linux/slab.h>
#include <linux/rculist.h>
-#include <linux/genhd.h>
#include <linux/seq_file.h>
#include <linux/ima.h>
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