49 	struct mddev *mddev;		/* RAID array if running */  member
259 	struct mddev			*mddev;  member
268 struct mddev {  struct
269 	void				*private;
270 	struct md_personality		*pers;
271 	dev_t				unit;
272 	int				md_minor;
273 	struct list_head		disks;
274 	unsigned long			flags;
275 	unsigned long			sb_flags;
277 	int				suspended;
278 	atomic_t			active_io;
279 	int				ro;
280 	int				sysfs_active; /* set when sysfs deletes
284 	struct gendisk			*gendisk;
286 	struct kobject			kobj;
287 	int				hold_active;
292 	int				major_version,
293 					minor_version,
294 					patch_version;
295 	int				persistent;
296 	int				external;	/* metadata is
298 	char				metadata_type[17]; /* externally set*/
299 	int				chunk_sectors;
300 	time64_t			ctime, utime;
301 	int				level, layout;
302 	char				clevel[16];
303 	int				raid_disks;
304 	int				max_disks;
305 	sector_t			dev_sectors;	/* used size of
307 	sector_t			array_sectors; /* exported array size */
308 	int				external_size; /* size managed
310 	__u64				events;
316 	int				can_decrease_events;
318 	char				uuid[16];
325 	sector_t			reshape_position;
326 	int				delta_disks, new_level, new_layout;
327 	int				new_chunk_sectors;
328 	int				reshape_backwards;
330 	struct md_thread		*thread;	/* management thread */
331 	struct md_thread		*sync_thread;	/* doing resync or reconstruct */
339 	char				*last_sync_action;
340 	sector_t			curr_resync;	/* last block scheduled */
347 	sector_t			curr_resync_completed;
348 	unsigned long			resync_mark;	/* a recent timestamp */
349 	sector_t			resync_mark_cnt;/* blocks written at resync_mark */
350 	sector_t			curr_mark_cnt; /* blocks scheduled now */
352 	sector_t			resync_max_sectors; /* may be set by personality */
354 	atomic64_t			resync_mismatches; /* count of sectors where
359 	sector_t			suspend_lo;
360 	sector_t			suspend_hi;
362 	int				sync_speed_min;
363 	int				sync_speed_max;
366 	int				parallel_resync;
368 	int				ok_start_degraded;
370 	unsigned long			recovery;
376 	int				recovery_disabled;
378 	int				in_sync;	/* know to not need resync */
388 	struct mutex			open_mutex;
389 	struct mutex			reconfig_mutex;
390 	atomic_t			active;		/* general refcount */
391 	atomic_t			openers;	/* number of active opens */
393 	int				changed;	/* True if we might need to
395 	int				degraded;	/* whether md should consider
399 	atomic_t			recovery_active; /* blocks scheduled, but not written */
400 	wait_queue_head_t		recovery_wait;
401 	sector_t			recovery_cp;
402 	sector_t			resync_min;	/* user requested sync
404 	sector_t			resync_max;	/* resync should pause
407 	struct kernfs_node		*sysfs_state;	/* handle for 'array_state'
410 	struct kernfs_node		*sysfs_action;  /* handle for 'sync_action' */
412 	struct work_struct del_work;	/* used for delayed sysfs removal */
425 	spinlock_t			lock;
426 	wait_queue_head_t		sb_wait;	/* for waiting on superblock updates */
427 	atomic_t			pending_writes;	/* number of active superblock writes */
429 	unsigned int			safemode;	/* if set, update "clean" superblock
432 	unsigned int			safemode_delay;
433 	struct timer_list		safemode_timer;
434 	struct percpu_ref		writes_pending;
435 	int				sync_checkers;	/* # of threads checking writes_pending */
436 	struct request_queue		*queue;	/* for plugging ... */
438 	struct bitmap			*bitmap; /* the bitmap for the device */
439 	struct {
464 	struct list_head		all_mddevs;  argument
476 	void (*sync_super)(struct mddev *mddev, struct md_rdev *rdev);  argument
477 	struct md_cluster_info		*cluster_info;
478 	unsigned int			good_device_nr;	/* good device num within cluster raid */
502 static inline int __must_check mddev_lock(struct mddev *mddev)  in mddev_lock()
510 static inline void mddev_lock_nointr(struct mddev *mddev)  in mddev_lock_nointr()
515 static inline int mddev_trylock(struct mddev *mddev)  in mddev_trylock()
601 static inline char * mdname (struct mddev * mddev)  in mdname()
606 static inline int sysfs_link_rdev(struct mddev *mddev, struct md_rdev *rdev)  in sysfs_link_rdev()
618 static inline void sysfs_unlink_rdev(struct mddev *mddev, struct md_rdev *rdev)  in sysfs_unlink_rdev()
639 #define rdev_for_each(rdev, mddev)				\  argument
642 #define rdev_for_each_safe(rdev, tmp, mddev)				\  argument
645 #define rdev_for_each_rcu(rdev, mddev)				\  argument
650 	struct mddev		*mddev;  member
726 static inline void rdev_dec_pending(struct md_rdev *rdev, struct mddev *mddev)  in rdev_dec_pending()
736 static inline int mddev_is_clustered(struct mddev *mddev)  in mddev_is_clustered()
742 static inline void mddev_clear_unsupported_flags(struct mddev *mddev,  in mddev_clear_unsupported_flags()
748 static inline void mddev_check_writesame(struct mddev *mddev, struct bio *bio)  in mddev_check_writesame()
755 static inline void mddev_check_write_zeroes(struct mddev *mddev, struct bio *bio)  in mddev_check_write_zeroes()