Merge tag 'for-5.7/block-2020-03-29' of git://git.kernel.dk/linux-block

Pull block updates from Jens Axboe:

 - Online capacity resizing (Balbir)

 - Number of hardware queue change fixes (Bart)

 - null_blk fault injection addition (Bart)

 - Cleanup of queue allocation, unifying the node/no-node API
   (Christoph)

 - Cleanup of genhd, moving code to where it makes sense (Christoph)

 - Cleanup of the partition handling code (Christoph)

 - disk stat fixes/improvements (Konstantin)

 - BFQ improvements (Paolo)

 - Various fixes and improvements

* tag 'for-5.7/block-2020-03-29' of git://git.kernel.dk/linux-block: (72 commits)
  block: return NULL in blk_alloc_queue() on error
  block: move bio_map_* to blk-map.c
  Revert "blkdev: check for valid request queue before issuing flush"
  block: simplify queue allocation
  bcache: pass the make_request methods to blk_queue_make_request
  null_blk: use blk_mq_init_queue_data
  block: add a blk_mq_init_queue_data helper
  block: move the ->devnode callback to struct block_device_operations
  block: move the part_stat* helpers from genhd.h to a new header
  block: move block layer internals out of include/linux/genhd.h
  block: move guard_bio_eod to bio.c
  block: unexport get_gendisk
  block: unexport disk_map_sector_rcu
  block: unexport disk_get_part
  block: mark part_in_flight and part_in_flight_rw static
  block: mark block_depr static
  block: factor out requeue handling from dispatch code
  block/diskstats: replace time_in_queue with sum of request times
  block/diskstats: accumulate all per-cpu counters in one pass
  block/diskstats: more accurate approximation of io_ticks for slow disks
  ...

1 files changed, 61 insertions, 462 deletions

diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 07dc91835b98..9b3fffdf4011 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -27,39 +27,8 @@
 #define part_to_dev(part)	(&((part)->__dev))
 
 extern struct device_type part_type;
-extern struct kobject *block_depr;
 extern struct class block_class;
 
-enum {
-/* These three have identical behaviour; use the second one if DOS FDISK gets
-   confused about extended/logical partitions starting past cylinder 1023. */
-	DOS_EXTENDED_PARTITION = 5,
-	LINUX_EXTENDED_PARTITION = 0x85,
-	WIN98_EXTENDED_PARTITION = 0x0f,
-
-	SUN_WHOLE_DISK = DOS_EXTENDED_PARTITION,
-
-	LINUX_SWAP_PARTITION = 0x82,
-	LINUX_DATA_PARTITION = 0x83,
-	LINUX_LVM_PARTITION = 0x8e,
-	LINUX_RAID_PARTITION = 0xfd,	/* autodetect RAID partition */
-
-	SOLARIS_X86_PARTITION =	LINUX_SWAP_PARTITION,
-	NEW_SOLARIS_X86_PARTITION = 0xbf,
-
-	DM6_AUX1PARTITION = 0x51,	/* no DDO:  use xlated geom */
-	DM6_AUX3PARTITION = 0x53,	/* no DDO:  use xlated geom */
-	DM6_PARTITION =	0x54,		/* has DDO: use xlated geom & offset */
-	EZD_PARTITION =	0x55,		/* EZ-DRIVE */
-
-	FREEBSD_PARTITION = 0xa5,	/* FreeBSD Partition ID */
-	OPENBSD_PARTITION = 0xa6,	/* OpenBSD Partition ID */
-	NETBSD_PARTITION = 0xa9,	/* NetBSD Partition ID */
-	BSDI_PARTITION = 0xb7,		/* BSDI Partition ID */
-	MINIX_PARTITION = 0x81,		/* Minix Partition ID */
-	UNIXWARE_PARTITION = 0x63,	/* Same as GNU_HURD and SCO Unix */
-};
-
 #define DISK_MAX_PARTS			256
 #define DISK_NAME_LEN			32
 
@@ -70,26 +39,12 @@ enum {
 #include <linux/fs.h>
 #include <linux/workqueue.h>
 
-struct partition {
-	unsigned char boot_ind;		/* 0x80 - active */
-	unsigned char head;		/* starting head */
-	unsigned char sector;		/* starting sector */
-	unsigned char cyl;		/* starting cylinder */
-	unsigned char sys_ind;		/* What partition type */
-	unsigned char end_head;		/* end head */
-	unsigned char end_sector;	/* end sector */
-	unsigned char end_cyl;		/* end cylinder */
-	__le32 start_sect;	/* starting sector counting from 0 */
-	__le32 nr_sects;		/* nr of sectors in partition */
-} __attribute__((packed));
-
 struct disk_stats {
 	u64 nsecs[NR_STAT_GROUPS];
 	unsigned long sectors[NR_STAT_GROUPS];
 	unsigned long ios[NR_STAT_GROUPS];
 	unsigned long merges[NR_STAT_GROUPS];
 	unsigned long io_ticks;
-	unsigned long time_in_queue;
 	local_t in_flight[2];
 };
 
@@ -133,17 +88,64 @@ struct hd_struct {
 	struct rcu_work rcu_work;
 };
 
-#define GENHD_FL_REMOVABLE			1
-/* 2 is unused */
-#define GENHD_FL_MEDIA_CHANGE_NOTIFY		4
-#define GENHD_FL_CD				8
-#define GENHD_FL_UP				16
-#define GENHD_FL_SUPPRESS_PARTITION_INFO	32
-#define GENHD_FL_EXT_DEVT			64 /* allow extended devt */
-#define GENHD_FL_NATIVE_CAPACITY		128
-#define GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE	256
-#define GENHD_FL_NO_PART_SCAN			512
-#define GENHD_FL_HIDDEN				1024
+/**
+ * DOC: genhd capability flags
+ *
+ * ``GENHD_FL_REMOVABLE`` (0x0001): indicates that the block device
+ * gives access to removable media.
+ * When set, the device remains present even when media is not
+ * inserted.
+ * Must not be set for devices which are removed entirely when the
+ * media is removed.
+ *
+ * ``GENHD_FL_CD`` (0x0008): the block device is a CD-ROM-style
+ * device.
+ * Affects responses to the ``CDROM_GET_CAPABILITY`` ioctl.
+ *
+ * ``GENHD_FL_UP`` (0x0010): indicates that the block device is "up",
+ * with a similar meaning to network interfaces.
+ *
+ * ``GENHD_FL_SUPPRESS_PARTITION_INFO`` (0x0020): don't include
+ * partition information in ``/proc/partitions`` or in the output of
+ * printk_all_partitions().
+ * Used for the null block device and some MMC devices.
+ *
+ * ``GENHD_FL_EXT_DEVT`` (0x0040): the driver supports extended
+ * dynamic ``dev_t``, i.e. it wants extended device numbers
+ * (``BLOCK_EXT_MAJOR``).
+ * This affects the maximum number of partitions.
+ *
+ * ``GENHD_FL_NATIVE_CAPACITY`` (0x0080): based on information in the
+ * partition table, the device's capacity has been extended to its
+ * native capacity; i.e. the device has hidden capacity used by one
+ * of the partitions (this is a flag used so that native capacity is
+ * only ever unlocked once).
+ *
+ * ``GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE`` (0x0100): event polling is
+ * blocked whenever a writer holds an exclusive lock.
+ *
+ * ``GENHD_FL_NO_PART_SCAN`` (0x0200): partition scanning is disabled.
+ * Used for loop devices in their default settings and some MMC
+ * devices.
+ *
+ * ``GENHD_FL_HIDDEN`` (0x0400): the block device is hidden; it
+ * doesn't produce events, doesn't appear in sysfs, and doesn't have
+ * an associated ``bdev``.
+ * Implies ``GENHD_FL_SUPPRESS_PARTITION_INFO`` and
+ * ``GENHD_FL_NO_PART_SCAN``.
+ * Used for multipath devices.
+ */
+#define GENHD_FL_REMOVABLE			0x0001
+/* 2 is unused (used to be GENHD_FL_DRIVERFS) */
+/* 4 is unused (used to be GENHD_FL_MEDIA_CHANGE_NOTIFY) */
+#define GENHD_FL_CD				0x0008
+#define GENHD_FL_UP				0x0010
+#define GENHD_FL_SUPPRESS_PARTITION_INFO	0x0020
+#define GENHD_FL_EXT_DEVT			0x0040
+#define GENHD_FL_NATIVE_CAPACITY		0x0080
+#define GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE	0x0100
+#define GENHD_FL_NO_PART_SCAN			0x0200
+#define GENHD_FL_HIDDEN				0x0400
 
 enum {
 	DISK_EVENT_MEDIA_CHANGE			= 1 << 0, /* media changed */
@@ -189,7 +191,6 @@ struct gendisk {
                                          * disks that can't be partitioned. */
 
 	char disk_name[DISK_NAME_LEN];	/* name of major driver */
-	char *(*devnode)(struct gendisk *gd, umode_t *mode);
 
 	unsigned short events;		/* supported events */
 	unsigned short event_flags;	/* flags related to event processing */
@@ -283,144 +284,7 @@ extern void disk_part_iter_init(struct disk_part_iter *piter,
 				 struct gendisk *disk, unsigned int flags);
 extern struct hd_struct *disk_part_iter_next(struct disk_part_iter *piter);
 extern void disk_part_iter_exit(struct disk_part_iter *piter);
-
-extern struct hd_struct *disk_map_sector_rcu(struct gendisk *disk,
-					     sector_t sector);
-bool disk_has_partitions(struct gendisk *disk);
-
-/*
- * Macros to operate on percpu disk statistics:
- *
- * {disk|part|all}_stat_{add|sub|inc|dec}() modify the stat counters
- * and should be called between disk_stat_lock() and
- * disk_stat_unlock().
- *
- * part_stat_read() can be called at any time.
- *
- * part_stat_{add|set_all}() and {init|free}_part_stats are for
- * internal use only.
- */
-#ifdef	CONFIG_SMP
-#define part_stat_lock()	({ rcu_read_lock(); get_cpu(); })
-#define part_stat_unlock()	do { put_cpu(); rcu_read_unlock(); } while (0)
-
-#define part_stat_get_cpu(part, field, cpu)					\
-	(per_cpu_ptr((part)->dkstats, (cpu))->field)
-
-#define part_stat_get(part, field)					\
-	part_stat_get_cpu(part, field, smp_processor_id())
-
-#define part_stat_read(part, field)					\
-({									\
-	typeof((part)->dkstats->field) res = 0;				\
-	unsigned int _cpu;						\
-	for_each_possible_cpu(_cpu)					\
-		res += per_cpu_ptr((part)->dkstats, _cpu)->field;	\
-	res;								\
-})
-
-static inline void part_stat_set_all(struct hd_struct *part, int value)
-{
-	int i;
-
-	for_each_possible_cpu(i)
-		memset(per_cpu_ptr(part->dkstats, i), value,
-				sizeof(struct disk_stats));
-}
-
-static inline int init_part_stats(struct hd_struct *part)
-{
-	part->dkstats = alloc_percpu(struct disk_stats);
-	if (!part->dkstats)
-		return 0;
-	return 1;
-}
-
-static inline void free_part_stats(struct hd_struct *part)
-{
-	free_percpu(part->dkstats);
-}
-
-#else /* !CONFIG_SMP */
-#define part_stat_lock()	({ rcu_read_lock(); 0; })
-#define part_stat_unlock()	rcu_read_unlock()
-
-#define part_stat_get(part, field)		((part)->dkstats.field)
-#define part_stat_get_cpu(part, field, cpu)	part_stat_get(part, field)
-#define part_stat_read(part, field)		part_stat_get(part, field)
-
-static inline void part_stat_set_all(struct hd_struct *part, int value)
-{
-	memset(&part->dkstats, value, sizeof(struct disk_stats));
-}
-
-static inline int init_part_stats(struct hd_struct *part)
-{
-	return 1;
-}
-
-static inline void free_part_stats(struct hd_struct *part)
-{
-}
-
-#endif /* CONFIG_SMP */
-
-#define part_stat_read_msecs(part, which)				\
-	div_u64(part_stat_read(part, nsecs[which]), NSEC_PER_MSEC)
-
-#define part_stat_read_accum(part, field)				\
-	(part_stat_read(part, field[STAT_READ]) +			\
-	 part_stat_read(part, field[STAT_WRITE]) +			\
-	 part_stat_read(part, field[STAT_DISCARD]))
-
-#define __part_stat_add(part, field, addnd)				\
-	(part_stat_get(part, field) += (addnd))
-
-#define part_stat_add(part, field, addnd)	do {			\
-	__part_stat_add((part), field, addnd);				\
-	if ((part)->partno)						\
-		__part_stat_add(&part_to_disk((part))->part0,		\
-				field, addnd);				\
-} while (0)
-
-#define part_stat_dec(gendiskp, field)					\
-	part_stat_add(gendiskp, field, -1)
-#define part_stat_inc(gendiskp, field)					\
-	part_stat_add(gendiskp, field, 1)
-#define part_stat_sub(gendiskp, field, subnd)				\
-	part_stat_add(gendiskp, field, -subnd)
-
-#define part_stat_local_dec(gendiskp, field)				\
-	local_dec(&(part_stat_get(gendiskp, field)))
-#define part_stat_local_inc(gendiskp, field)				\
-	local_inc(&(part_stat_get(gendiskp, field)))
-#define part_stat_local_read(gendiskp, field)				\
-	local_read(&(part_stat_get(gendiskp, field)))
-#define part_stat_local_read_cpu(gendiskp, field, cpu)			\
-	local_read(&(part_stat_get_cpu(gendiskp, field, cpu)))
-
-unsigned int part_in_flight(struct request_queue *q, struct hd_struct *part);
-void part_in_flight_rw(struct request_queue *q, struct hd_struct *part,
-		       unsigned int inflight[2]);
-void part_dec_in_flight(struct request_queue *q, struct hd_struct *part,
-			int rw);
-void part_inc_in_flight(struct request_queue *q, struct hd_struct *part,
-			int rw);
-
-static inline struct partition_meta_info *alloc_part_info(struct gendisk *disk)
-{
-	if (disk)
-		return kzalloc_node(sizeof(struct partition_meta_info),
-				    GFP_KERNEL, disk->node_id);
-	return kzalloc(sizeof(struct partition_meta_info), GFP_KERNEL);
-}
-
-static inline void free_part_info(struct hd_struct *part)
-{
-	kfree(part->info);
-}
-
-void update_io_ticks(struct hd_struct *part, unsigned long now);
+extern bool disk_has_partitions(struct gendisk *disk);
 
 /* block/genhd.c */
 extern void device_add_disk(struct device *parent, struct gendisk *disk,
@@ -450,6 +314,8 @@ static inline int get_disk_ro(struct gendisk *disk)
 extern void disk_block_events(struct gendisk *disk);
 extern void disk_unblock_events(struct gendisk *disk);
 extern void disk_flush_events(struct gendisk *disk, unsigned int mask);
+extern void set_capacity_revalidate_and_notify(struct gendisk *disk,
+			sector_t size, bool revalidate);
 extern unsigned int disk_clear_events(struct gendisk *disk, unsigned int mask);
 
 /* drivers/char/random.c */
@@ -469,170 +335,11 @@ static inline void set_capacity(struct gendisk *disk, sector_t size)
 	disk->part0.nr_sects = size;
 }
 
-#ifdef CONFIG_SOLARIS_X86_PARTITION
-
-#define SOLARIS_X86_NUMSLICE	16
-#define SOLARIS_X86_VTOC_SANE	(0x600DDEEEUL)
-
-struct solaris_x86_slice {
-	__le16 s_tag;		/* ID tag of partition */
-	__le16 s_flag;		/* permission flags */
-	__le32 s_start;		/* start sector no of partition */
-	__le32 s_size;		/* # of blocks in partition */
-};
-
-struct solaris_x86_vtoc {
-	unsigned int v_bootinfo[3];	/* info needed by mboot (unsupported) */
-	__le32 v_sanity;		/* to verify vtoc sanity */
-	__le32 v_version;		/* layout version */
-	char	v_volume[8];		/* volume name */
-	__le16	v_sectorsz;		/* sector size in bytes */
-	__le16	v_nparts;		/* number of partitions */
-	unsigned int v_reserved[10];	/* free space */
-	struct solaris_x86_slice
-		v_slice[SOLARIS_X86_NUMSLICE]; /* slice headers */
-	unsigned int timestamp[SOLARIS_X86_NUMSLICE]; /* timestamp (unsupported) */
-	char	v_asciilabel[128];	/* for compatibility */
-};
-
-#endif /* CONFIG_SOLARIS_X86_PARTITION */
-
-#ifdef CONFIG_BSD_DISKLABEL
-/*
- * BSD disklabel support by Yossi Gottlieb <yogo@math.tau.ac.il>
- * updated by Marc Espie <Marc.Espie@openbsd.org>
- */
-
-/* check against BSD src/sys/sys/disklabel.h for consistency */
-
-#define BSD_DISKMAGIC	(0x82564557UL)	/* The disk magic number */
-#define BSD_MAXPARTITIONS	16
-#define OPENBSD_MAXPARTITIONS	16
-#define BSD_FS_UNUSED		0	/* disklabel unused partition entry ID */
-struct bsd_disklabel {
-	__le32	d_magic;		/* the magic number */
-	__s16	d_type;			/* drive type */
-	__s16	d_subtype;		/* controller/d_type specific */
-	char	d_typename[16];		/* type name, e.g. "eagle" */
-	char	d_packname[16];			/* pack identifier */ 
-	__u32	d_secsize;		/* # of bytes per sector */
-	__u32	d_nsectors;		/* # of data sectors per track */
-	__u32	d_ntracks;		/* # of tracks per cylinder */
-	__u32	d_ncylinders;		/* # of data cylinders per unit */
-	__u32	d_secpercyl;		/* # of data sectors per cylinder */
-	__u32	d_secperunit;		/* # of data sectors per unit */
-	__u16	d_sparespertrack;	/* # of spare sectors per track */
-	__u16	d_sparespercyl;		/* # of spare sectors per cylinder */
-	__u32	d_acylinders;		/* # of alt. cylinders per unit */
-	__u16	d_rpm;			/* rotational speed */
-	__u16	d_interleave;		/* hardware sector interleave */
-	__u16	d_trackskew;		/* sector 0 skew, per track */
-	__u16	d_cylskew;		/* sector 0 skew, per cylinder */
-	__u32	d_headswitch;		/* head switch time, usec */
-	__u32	d_trkseek;		/* track-to-track seek, usec */
-	__u32	d_flags;		/* generic flags */
-#define NDDATA 5
-	__u32	d_drivedata[NDDATA];	/* drive-type specific information */
-#define NSPARE 5
-	__u32	d_spare[NSPARE];	/* reserved for future use */
-	__le32	d_magic2;		/* the magic number (again) */
-	__le16	d_checksum;		/* xor of data incl. partitions */
-
-			/* filesystem and partition information: */
-	__le16	d_npartitions;		/* number of partitions in following */
-	__le32	d_bbsize;		/* size of boot area at sn0, bytes */
-	__le32	d_sbsize;		/* max size of fs superblock, bytes */
-	struct	bsd_partition {		/* the partition table */
-		__le32	p_size;		/* number of sectors in partition */
-		__le32	p_offset;	/* starting sector */
-		__le32	p_fsize;	/* filesystem basic fragment size */
-		__u8	p_fstype;	/* filesystem type, see below */
-		__u8	p_frag;		/* filesystem fragments per block */
-		__le16	p_cpg;		/* filesystem cylinders per group */
-	} d_partitions[BSD_MAXPARTITIONS];	/* actually may be more */
-};
-
-#endif	/* CONFIG_BSD_DISKLABEL */
-
-#ifdef CONFIG_UNIXWARE_DISKLABEL
-/*
- * Unixware slices support by Andrzej Krzysztofowicz <ankry@mif.pg.gda.pl>
- * and Krzysztof G. Baranowski <kgb@knm.org.pl>
- */
-
-#define UNIXWARE_DISKMAGIC     (0xCA5E600DUL)	/* The disk magic number */
-#define UNIXWARE_DISKMAGIC2    (0x600DDEEEUL)	/* The slice table magic nr */
-#define UNIXWARE_NUMSLICE      16
-#define UNIXWARE_FS_UNUSED     0		/* Unused slice entry ID */
-
-struct unixware_slice {
-	__le16   s_label;	/* label */
-	__le16   s_flags;	/* permission flags */
-	__le32   start_sect;	/* starting sector */
-	__le32   nr_sects;	/* number of sectors in slice */
-};
-
-struct unixware_disklabel {
-	__le32   d_type;               	/* drive type */
-	__le32   d_magic;                /* the magic number */
-	__le32   d_version;              /* version number */
-	char    d_serial[12];           /* serial number of the device */
-	__le32   d_ncylinders;           /* # of data cylinders per device */
-	__le32   d_ntracks;              /* # of tracks per cylinder */
-	__le32   d_nsectors;             /* # of data sectors per track */
-	__le32   d_secsize;              /* # of bytes per sector */
-	__le32   d_part_start;           /* # of first sector of this partition */
-	__le32   d_unknown1[12];         /* ? */
- 	__le32	d_alt_tbl;              /* byte offset of alternate table */
- 	__le32	d_alt_len;              /* byte length of alternate table */
- 	__le32	d_phys_cyl;             /* # of physical cylinders per device */
- 	__le32	d_phys_trk;             /* # of physical tracks per cylinder */
- 	__le32	d_phys_sec;             /* # of physical sectors per track */
- 	__le32	d_phys_bytes;           /* # of physical bytes per sector */
- 	__le32	d_unknown2;             /* ? */
-	__le32   d_unknown3;             /* ? */
-	__le32	d_pad[8];               /* pad */
-
-	struct unixware_vtoc {
-		__le32	v_magic;		/* the magic number */
-		__le32	v_version;		/* version number */
-		char	v_name[8];		/* volume name */
-		__le16	v_nslices;		/* # of slices */
-		__le16	v_unknown1;		/* ? */
-		__le32	v_reserved[10];		/* reserved */
-		struct unixware_slice
-			v_slice[UNIXWARE_NUMSLICE];	/* slice headers */
-	} vtoc;
-
-};  /* 408 */
-
-#endif /* CONFIG_UNIXWARE_DISKLABEL */
-
-#ifdef CONFIG_MINIX_SUBPARTITION
-#   define MINIX_NR_SUBPARTITIONS  4
-#endif /* CONFIG_MINIX_SUBPARTITION */
-
-#define ADDPART_FLAG_NONE	0
-#define ADDPART_FLAG_RAID	1
-#define ADDPART_FLAG_WHOLEDISK	2
-
-extern int blk_alloc_devt(struct hd_struct *part, dev_t *devt);
-extern void blk_free_devt(dev_t devt);
-extern void blk_invalidate_devt(dev_t devt);
 extern dev_t blk_lookup_devt(const char *name, int partno);
-extern char *disk_name (struct gendisk *hd, int partno, char *buf);
 
 int bdev_disk_changed(struct block_device *bdev, bool invalidate);
 int blk_add_partitions(struct gendisk *disk, struct block_device *bdev);
 int blk_drop_partitions(struct gendisk *disk, struct block_device *bdev);
-extern int disk_expand_part_tbl(struct gendisk *disk, int target);
-extern struct hd_struct * __must_check add_partition(struct gendisk *disk,
-						     int partno, sector_t start,
-						     sector_t len, int flags,
-						     struct partition_meta_info
-						       *info);
-extern void __delete_partition(struct percpu_ref *);
-extern void delete_partition(struct gendisk *, int);
 extern void printk_all_partitions(void);
 
 extern struct gendisk *__alloc_disk_node(int minors, int node_id);
@@ -646,20 +353,6 @@ extern void blk_register_region(dev_t devt, unsigned long range,
 			void *data);
 extern void blk_unregister_region(dev_t devt, unsigned long range);
 
-extern ssize_t part_size_show(struct device *dev,
-			      struct device_attribute *attr, char *buf);
-extern ssize_t part_stat_show(struct device *dev,
-			      struct device_attribute *attr, char *buf);
-extern ssize_t part_inflight_show(struct device *dev,
-			      struct device_attribute *attr, char *buf);
-#ifdef CONFIG_FAIL_MAKE_REQUEST
-extern ssize_t part_fail_show(struct device *dev,
-			      struct device_attribute *attr, char *buf);
-extern ssize_t part_fail_store(struct device *dev,
-			       struct device_attribute *attr,
-			       const char *buf, size_t count);
-#endif /* CONFIG_FAIL_MAKE_REQUEST */
-
 #define alloc_disk_node(minors, node_id)				\
 ({									\
 	static struct lock_class_key __key;				\
@@ -678,100 +371,6 @@ extern ssize_t part_fail_store(struct device *dev,
 
 #define alloc_disk(minors) alloc_disk_node(minors, NUMA_NO_NODE)
 
-static inline int hd_ref_init(struct hd_struct *part)
-{
-	if (percpu_ref_init(&part->ref, __delete_partition, 0,
-				GFP_KERNEL))
-		return -ENOMEM;
-	return 0;
-}
-
-static inline void hd_struct_get(struct hd_struct *part)
-{
-	percpu_ref_get(&part->ref);
-}
-
-static inline int hd_struct_try_get(struct hd_struct *part)
-{
-	return percpu_ref_tryget_live(&part->ref);
-}
-
-static inline void hd_struct_put(struct hd_struct *part)
-{
-	percpu_ref_put(&part->ref);
-}
-
-static inline void hd_struct_kill(struct hd_struct *part)
-{
-	percpu_ref_kill(&part->ref);
-}
-
-static inline void hd_free_part(struct hd_struct *part)
-{
-	free_part_stats(part);
-	free_part_info(part);
-	percpu_ref_exit(&part->ref);
-}
-
-/*
- * Any access of part->nr_sects which is not protected by partition
- * bd_mutex or gendisk bdev bd_mutex, should be done using this
- * accessor function.
- *
- * Code written along the lines of i_size_read() and i_size_write().
- * CONFIG_PREEMPTION case optimizes the case of UP kernel with preemption
- * on.
- */
-static inline sector_t part_nr_sects_read(struct hd_struct *part)
-{
-#if BITS_PER_LONG==32 && defined(CONFIG_SMP)
-	sector_t nr_sects;
-	unsigned seq;
-	do {
-		seq = read_seqcount_begin(&part->nr_sects_seq);
-		nr_sects = part->nr_sects;
-	} while (read_seqcount_retry(&part->nr_sects_seq, seq));
-	return nr_sects;
-#elif BITS_PER_LONG==32 && defined(CONFIG_PREEMPTION)
-	sector_t nr_sects;
-
-	preempt_disable();
-	nr_sects = part->nr_sects;
-	preempt_enable();
-	return nr_sects;
-#else
-	return part->nr_sects;
-#endif
-}
-
-/*
- * Should be called with mutex lock held (typically bd_mutex) of partition
- * to provide mutual exlusion among writers otherwise seqcount might be
- * left in wrong state leaving the readers spinning infinitely.
- */
-static inline void part_nr_sects_write(struct hd_struct *part, sector_t size)
-{
-#if BITS_PER_LONG==32 && defined(CONFIG_SMP)
-	write_seqcount_begin(&part->nr_sects_seq);
-	part->nr_sects = size;
-	write_seqcount_end(&part->nr_sects_seq);
-#elif BITS_PER_LONG==32 && defined(CONFIG_PREEMPTION)
-	preempt_disable();
-	part->nr_sects = size;
-	preempt_enable();
-#else
-	part->nr_sects = size;
-#endif
-}
-
-#if defined(CONFIG_BLK_DEV_INTEGRITY)
-extern void blk_integrity_add(struct gendisk *);
-extern void blk_integrity_del(struct gendisk *);
-#else	/* CONFIG_BLK_DEV_INTEGRITY */
-static inline void blk_integrity_add(struct gendisk *disk) { }
-static inline void blk_integrity_del(struct gendisk *disk) { }
-#endif	/* CONFIG_BLK_DEV_INTEGRITY */
-
 #else /* CONFIG_BLOCK */
 
 static inline void printk_all_partitions(void) { }