#include <linux/blkdev.h>
#include <linux/kobject.h>
#include <linux/list.h>
#include <linux/mm.h>
#include <linux/mutex.h>
#include <linux/timer.h>
#include <linux/wait.h>
#include <linux/workqueue.h>

Data Structures
struct	md_rdev

struct	md_rdev::badblocks

struct	mddev

struct	md_personality

struct	md_sysfs_entry

struct	md_thread

Macros
#define	MaxSector (~(sector_t)0)

#define	MD_MAX_BADBLOCKS (PAGE_SIZE/8)

#define	BB_LEN_MASK (0x00000000000001FFULL)

#define	BB_OFFSET_MASK (0x7FFFFFFFFFFFFE00ULL)

#define	BB_ACK_MASK (0x8000000000000000ULL)

#define	BB_MAX_LEN 512

#define	BB_OFFSET(x) (((x) & BB_OFFSET_MASK) >> 9)

#define	BB_LEN(x) (((x) & BB_LEN_MASK) + 1)

#define	BB_ACK(x) (!!((x) & BB_ACK_MASK))

#define	BB_MAKE(a, l, ack) (((a)<<9) \| ((l)-1) \| ((u64)(!!(ack)) << 63))

#define	MD_CHANGE_DEVS 0 /* Some device status has changed */

#define	MD_CHANGE_CLEAN 1 /* transition to or from 'clean' */

#define	MD_CHANGE_PENDING 2 /* switch from 'clean' to 'active' in progress */

#define	MD_ARRAY_FIRST_USE 3 /* First use of array, needs initialization */

#define	UNTIL_IOCTL 1

#define	UNTIL_STOP 2

#define	MD_RECOVERY_RUNNING 0

#define	MD_RECOVERY_SYNC 1

#define	MD_RECOVERY_RECOVER 2

#define	MD_RECOVERY_INTR 3

#define	MD_RECOVERY_DONE 4

#define	MD_RECOVERY_NEEDED 5

#define	MD_RECOVERY_REQUESTED 6

#define	MD_RECOVERY_CHECK 7

#define	MD_RECOVERY_RESHAPE 8

#define	MD_RECOVERY_FROZEN 9

#define	rdev_for_each_list(rdev, tmp, head) list_for_each_entry_safe(rdev, tmp, head, same_set)

#define	rdev_for_each(rdev, mddev) list_for_each_entry(rdev, &((mddev)->disks), same_set)

#define	rdev_for_each_safe(rdev, tmp, mddev) list_for_each_entry_safe(rdev, tmp, &((mddev)->disks), same_set)

#define	rdev_for_each_rcu(rdev, mddev) list_for_each_entry_rcu(rdev, &((mddev)->disks), same_set)

#define	THREAD_WAKEUP 0

#define	__wait_event_lock_irq(wq, condition, lock, cmd)

#define	wait_event_lock_irq(wq, condition, lock, cmd)

Enumerations
enum	flag_bits { Faulty, In_sync, Unmerged, WriteMostly, AutoDetected, Blocked, WriteErrorSeen, FaultRecorded, BlockedBadBlocks, WantReplacement, Replacement }

Functions
int	md_is_badblock (struct badblocks bb, sector_t s, int sectors, sector_t first_bad, int *bad_sectors)

int	rdev_set_badblocks (struct md_rdev *rdev, sector_t s, int sectors, int is_new)

int	rdev_clear_badblocks (struct md_rdev *rdev, sector_t s, int sectors, int is_new)

void	md_ack_all_badblocks (struct badblocks *bb)

int	register_md_personality (struct md_personality *p)

int	unregister_md_personality (struct md_personality *p)

struct md_thread *	md_register_thread (void(run)(struct md_thread thread), struct mddev mddev, const char name)

void	md_unregister_thread (struct md_thread **threadp)

void	md_wakeup_thread (struct md_thread *thread)

void	md_check_recovery (struct mddev *mddev)

void	md_write_start (struct mddev mddev, struct bio bi)

void	md_write_end (struct mddev *mddev)

void	md_done_sync (struct mddev *mddev, int blocks, int ok)

void	md_error (struct mddev mddev, struct md_rdev rdev)

void	md_finish_reshape (struct mddev *mddev)

int	mddev_congested (struct mddev *mddev, int bits)

void	md_flush_request (struct mddev mddev, struct bio bio)

void	md_super_write (struct mddev mddev, struct md_rdev rdev, sector_t sector, int size, struct page *page)

void	md_super_wait (struct mddev *mddev)

int	sync_page_io (struct md_rdev rdev, sector_t sector, int size, struct page page, int rw, bool metadata_op)

void	md_do_sync (struct md_thread *thread)

void	md_new_event (struct mddev *mddev)

int	md_allow_write (struct mddev *mddev)

void	md_wait_for_blocked_rdev (struct md_rdev rdev, struct mddev mddev)

void	md_set_array_sectors (struct mddev *mddev, sector_t array_sectors)

int	md_check_no_bitmap (struct mddev *mddev)

int	md_integrity_register (struct mddev *mddev)

void	md_integrity_add_rdev (struct md_rdev rdev, struct mddev mddev)

int	strict_strtoul_scaled (const char cp, unsigned long res, int scale)

void	restore_bitmap_write_access (struct file *file)

void	mddev_init (struct mddev *mddev)

int	md_run (struct mddev *mddev)

void	md_stop (struct mddev *mddev)

void	md_stop_writes (struct mddev *mddev)

int	md_rdev_init (struct md_rdev *rdev)

void	md_rdev_clear (struct md_rdev *rdev)

void	mddev_suspend (struct mddev *mddev)

void	mddev_resume (struct mddev *mddev)

struct bio *	bio_clone_mddev (struct bio bio, gfp_t gfp_mask, struct mddev mddev)

struct bio *	bio_alloc_mddev (gfp_t gfp_mask, int nr_iovecs, struct mddev *mddev)

void	md_trim_bio (struct bio *bio, int offset, int size)

void	md_unplug (struct blk_plug_cb *cb, bool from_schedule)

Variables
struct attribute_group	md_bitmap_group

Macro Definition Documentation

#define __wait_event_lock_irq	(	wq,
		condition,
		lock,
		cmd
	)

Value:

do {                                    \
	wait_queue_t __wait;                       \
    init_waitqueue_entry(&__wait, current);             \
									\
	add_wait_queue(&wq, &__wait);                  \
    for (;;) {                          \
        set_current_state(TASK_UNINTERRUPTIBLE);        \
        if (condition)                      \
            break;                      \
        spin_unlock_irq(&lock);                 \
		cmd;                          \
        schedule();                     \
        spin_lock_irq(&lock);                   \
    }                               \
    current->state = TASK_RUNNING;                  \
    remove_wait_queue(&wq, &__wait);                \
} while (0)

Definition at line 554 of file md.h.

#define BB_ACK ( x ) (!!((x) & BB_ACK_MASK))

Definition at line 178 of file md.h.

#define BB_ACK_MASK (0x8000000000000000ULL)

Definition at line 174 of file md.h.

#define BB_LEN ( x ) (((x) & BB_LEN_MASK) + 1)

Definition at line 177 of file md.h.

#define BB_LEN_MASK (0x00000000000001FFULL)

Definition at line 172 of file md.h.

#define BB_MAKE	(	a,
		l,
		ack
	)	(((a)<<9) \| ((l)-1) \| ((u64)(!!(ack)) << 63))

Definition at line 179 of file md.h.

#define BB_MAX_LEN 512

Definition at line 175 of file md.h.

#define BB_OFFSET ( x ) (((x) & BB_OFFSET_MASK) >> 9)

Definition at line 176 of file md.h.

#define BB_OFFSET_MASK (0x7FFFFFFFFFFFFE00ULL)

Definition at line 173 of file md.h.

#define MaxSector (~(sector_t)0)

Definition at line 27 of file md.h.

#define MD_ARRAY_FIRST_USE 3 /* First use of array, needs initialization */

Definition at line 212 of file md.h.

#define MD_CHANGE_CLEAN 1 /* transition to or from 'clean' */

Definition at line 210 of file md.h.

#define MD_CHANGE_DEVS 0 /* Some device status has changed */

Definition at line 209 of file md.h.

#define MD_CHANGE_PENDING 2 /* switch from 'clean' to 'active' in progress */

Definition at line 211 of file md.h.

#define MD_MAX_BADBLOCKS (PAGE_SIZE/8)

Definition at line 34 of file md.h.

#define MD_RECOVERY_CHECK 7

Definition at line 320 of file md.h.

#define MD_RECOVERY_DONE 4

Definition at line 317 of file md.h.

#define MD_RECOVERY_FROZEN 9

Definition at line 322 of file md.h.

#define MD_RECOVERY_INTR 3

Definition at line 316 of file md.h.

#define MD_RECOVERY_NEEDED 5

Definition at line 318 of file md.h.

#define MD_RECOVERY_RECOVER 2

Definition at line 315 of file md.h.

#define MD_RECOVERY_REQUESTED 6

Definition at line 319 of file md.h.

#define MD_RECOVERY_RESHAPE 8

Definition at line 321 of file md.h.

#define MD_RECOVERY_RUNNING 0

Definition at line 313 of file md.h.

#define MD_RECOVERY_SYNC 1

Definition at line 314 of file md.h.

#define rdev_for_each	(	rdev,
		mddev
	)	list_for_each_entry(rdev, &((mddev)->disks), same_set)

Definition at line 533 of file md.h.

#define rdev_for_each_list	(	rdev,
		tmp,
		head
	)	list_for_each_entry_safe(rdev, tmp, head, same_set)

Definition at line 527 of file md.h.

#define rdev_for_each_rcu	(	rdev,
		mddev
	)	list_for_each_entry_rcu(rdev, &((mddev)->disks), same_set)

Definition at line 539 of file md.h.

#define rdev_for_each_safe	(	rdev,
		tmp,
		mddev
	)	list_for_each_entry_safe(rdev, tmp, &((mddev)->disks), same_set)

Definition at line 536 of file md.h.

#define THREAD_WAKEUP 0

Definition at line 552 of file md.h.

#define UNTIL_IOCTL 1

Definition at line 227 of file md.h.

#define UNTIL_STOP 2

Definition at line 228 of file md.h.

#define wait_event_lock_irq	(	wq,
		condition,
		lock,
		cmd
	)

Value:

do {                                    \
    if (condition)                          \
        break;                          \
    __wait_event_lock_irq(wq, condition, lock, cmd);        \
} while (0)

Definition at line 573 of file md.h.

Enumeration Type Documentation

enum flag_bits

Enumerator:

Faulty
In_sync
Unmerged
WriteMostly
AutoDetected
Blocked
WriteErrorSeen
FaultRecorded
BlockedBadBlocks
WantReplacement
Replacement

Definition at line 129 of file md.h.

Function Documentation

struct bio* bio_alloc_mddev	(	gfp_t	gfp_mask,
		int	nr_iovecs,
		struct mddev *	mddev
	)

read

Definition at line 158 of file md.c.

struct bio* bio_clone_mddev	(	struct bio *	bio,
		gfp_t	gfp_mask,
		struct mddev *	mddev
	)

read

Definition at line 173 of file md.c.

void md_ack_all_badblocks ( struct badblocks * bb )

Definition at line 8300 of file md.c.

int md_allow_write ( struct mddev * mddev )

Definition at line 7252 of file md.c.

int md_check_no_bitmap ( struct mddev * mddev )

Definition at line 1002 of file md.c.

void md_check_recovery ( struct mddev * mddev )

Definition at line 7734 of file md.c.

void md_do_sync ( struct md_thread * thread )

Definition at line 7284 of file md.c.

void md_done_sync	(	struct mddev *	mddev,
		int	blocks,
		int	ok
	)

Definition at line 7180 of file md.c.

void md_error	(	struct mddev *	mddev,
		struct md_rdev *	rdev
	)

Definition at line 6772 of file md.c.

void md_finish_reshape ( struct mddev * mddev )

Definition at line 7906 of file md.c.

void md_flush_request	(	struct mddev *	mddev,
		struct bio *	bio
	)

Definition at line 450 of file md.c.

void md_integrity_add_rdev	(	struct md_rdev *	rdev,
		struct mddev *	mddev
	)

Definition at line 2045 of file md.c.

int md_integrity_register ( struct mddev * mddev )

Definition at line 1998 of file md.c.

int md_is_badblock	(	struct badblocks *	bb,
		sector_t	s,
		int	sectors,
		sector_t *	first_bad,
		int *	bad_sectors
	)

Definition at line 7947 of file md.c.

void md_new_event ( struct mddev * mddev )

Definition at line 244 of file md.c.

void md_rdev_clear ( struct md_rdev * rdev )

Definition at line 743 of file md.c.

int md_rdev_init ( struct md_rdev * rdev )

Definition at line 3193 of file md.c.

struct md_thread* md_register_thread	(	void()(struct md_thread thread)	run,
		struct mddev *	mddev,
		const char *	name
	)

read

int md_run ( struct mddev * mddev )

Definition at line 4947 of file md.c.

void md_set_array_sectors	(	struct mddev *	mddev,
		sector_t	array_sectors
	)

Definition at line 6105 of file md.c.

void md_stop ( struct mddev * mddev )

Definition at line 5308 of file md.c.

void md_stop_writes ( struct mddev * mddev )

Definition at line 5289 of file md.c.

void md_super_wait ( struct mddev * mddev )

Definition at line 799 of file md.c.

void md_super_write	(	struct mddev *	mddev,
		struct md_rdev *	rdev,
		sector_t	sector,
		int	size,
		struct page *	page
	)

Definition at line 778 of file md.c.

void md_trim_bio	(	struct bio *	bio,
		int	offset,
		int	size
	)

Definition at line 183 of file md.c.

void md_unplug	(	struct blk_plug_cb *	cb,
		bool	from_schedule
	)

Definition at line 464 of file md.c.

void md_unregister_thread ( struct md_thread ** threadp )

Definition at line 6755 of file md.c.

void md_wait_for_blocked_rdev	(	struct md_rdev *	rdev,
		struct mddev *	mddev
	)

Definition at line 7895 of file md.c.

void md_wakeup_thread ( struct md_thread * thread )

Definition at line 6721 of file md.c.

void md_write_end ( struct mddev * mddev )

Definition at line 7233 of file md.c.

void md_write_start	(	struct mddev *	mddev,
		struct bio *	bi
	)

Definition at line 7198 of file md.c.

int mddev_congested	(	struct mddev *	mddev,
		int	bits
	)

Definition at line 374 of file md.c.

void mddev_init ( struct mddev * mddev )

Definition at line 509 of file md.c.

void mddev_resume ( struct mddev * mddev )

Definition at line 362 of file md.c.

void mddev_suspend ( struct mddev * mddev )

Definition at line 350 of file md.c.

int rdev_clear_badblocks	(	struct md_rdev *	rdev,
		sector_t	s,
		int	sectors,
		int	is_new
	)

Definition at line 8283 of file md.c.

int rdev_set_badblocks	(	struct md_rdev *	rdev,
		sector_t	s,
		int	sectors,
		int	is_new
	)

Definition at line 8168 of file md.c.

int register_md_personality ( struct md_personality * p )

Definition at line 7118 of file md.c.

void restore_bitmap_write_access ( struct file * file )

Definition at line 5214 of file md.c.

int strict_strtoul_scaled	(	const char *	cp,
		unsigned long *	res,
		int	scale
	)

Definition at line 3378 of file md.c.

int sync_page_io	(	struct md_rdev *	rdev,
		sector_t	sector,
		int	size,
		struct page *	page,
		int	rw,
		bool	metadata_op
	)

Definition at line 817 of file md.c.

int unregister_md_personality ( struct md_personality * p )

Definition at line 7127 of file md.c.

Variable Documentation

struct attribute_group md_bitmap_group

Definition at line 2266 of file bitmap.c.

Data Structures

Macros

Enumerations

Functions

Variables

Macro Definition Documentation

Enumeration Type Documentation

Function Documentation

Variable Documentation