44 	struct mddev *mddev;		/* RAID array if running */  member
212 struct mddev {  struct
213 	void				*private;
214 	struct md_personality		*pers;
215 	dev_t				unit;
216 	int				md_minor;
217 	struct list_head		disks;
218 	unsigned long			flags;
228 	int				suspended;
229 	atomic_t			active_io;
230 	int				ro;
231 	int				sysfs_active; /* set when sysfs deletes
235 	int				ready; /* See when safe to pass
237 	struct gendisk			*gendisk;
239 	struct kobject			kobj;
240 	int				hold_active;
245 	int				major_version,
246 					minor_version,
247 					patch_version;
248 	int				persistent;
249 	int				external;	/* metadata is
251 	char				metadata_type[17]; /* externally set*/
252 	int				chunk_sectors;
253 	time_t				ctime, utime;
254 	int				level, layout;
255 	char				clevel[16];
256 	int				raid_disks;
257 	int				max_disks;
258 	sector_t			dev_sectors;	/* used size of
260 	sector_t			array_sectors; /* exported array size */
261 	int				external_size; /* size managed
263 	__u64				events;
269 	int				can_decrease_events;
271 	char				uuid[16];
278 	sector_t			reshape_position;
279 	int				delta_disks, new_level, new_layout;
280 	int				new_chunk_sectors;
281 	int				reshape_backwards;
283 	struct md_thread		*thread;	/* management thread */
284 	struct md_thread		*sync_thread;	/* doing resync or reconstruct */
292 	char				*last_sync_action;
293 	sector_t			curr_resync;	/* last block scheduled */
300 	sector_t			curr_resync_completed;
301 	unsigned long			resync_mark;	/* a recent timestamp */
302 	sector_t			resync_mark_cnt;/* blocks written at resync_mark */
303 	sector_t			curr_mark_cnt; /* blocks scheduled now */
305 	sector_t			resync_max_sectors; /* may be set by personality */
307 	atomic64_t			resync_mismatches; /* count of sectors where
312 	sector_t			suspend_lo;
313 	sector_t			suspend_hi;
315 	int				sync_speed_min;
316 	int				sync_speed_max;
319 	int				parallel_resync;
321 	int				ok_start_degraded;
348 	unsigned long			recovery;
354 	int				recovery_disabled;
356 	int				in_sync;	/* know to not need resync */
366 	struct mutex			open_mutex;
367 	struct mutex			reconfig_mutex;
368 	atomic_t			active;		/* general refcount */
369 	atomic_t			openers;	/* number of active opens */
371 	int				changed;	/* True if we might need to
373 	int				degraded;	/* whether md should consider
376 	int				merge_check_needed; /* at least one
381 	atomic_t			recovery_active; /* blocks scheduled, but not written */
382 	wait_queue_head_t		recovery_wait;
383 	sector_t			recovery_cp;
384 	sector_t			resync_min;	/* user requested sync
386 	sector_t			resync_max;	/* resync should pause
389 	struct kernfs_node		*sysfs_state;	/* handle for 'array_state'
392 	struct kernfs_node		*sysfs_action;  /* handle for 'sync_action' */
394 	struct work_struct del_work;	/* used for delayed sysfs removal */
407 	spinlock_t			lock;
408 	wait_queue_head_t		sb_wait;	/* for waiting on superblock updates */
409 	atomic_t			pending_writes;	/* number of active superblock writes */
411 	unsigned int			safemode;	/* if set, update "clean" superblock
414 	unsigned int			safemode_delay;
415 	struct timer_list		safemode_timer;
416 	atomic_t			writes_pending;
417 	struct request_queue		*queue;	/* for plugging ... */
419 	struct bitmap			*bitmap; /* the bitmap for the device */
420 	struct {
445 	struct list_head		all_mddevs;  argument
459 	void (*sync_super)(struct mddev *mddev, struct md_rdev *rdev);  argument
463 static inline int __must_check mddev_lock(struct mddev *mddev)  in mddev_lock()
471 static inline void mddev_lock_nointr(struct mddev *mddev)  in mddev_lock_nointr()
476 static inline int mddev_is_locked(struct mddev *mddev)  in mddev_is_locked()
481 static inline int mddev_trylock(struct mddev *mddev)  in mddev_trylock()
559 static inline char * mdname (struct mddev * mddev)  in mdname()
564 static inline int sysfs_link_rdev(struct mddev *mddev, struct md_rdev *rdev)  in sysfs_link_rdev()
574 static inline void sysfs_unlink_rdev(struct mddev *mddev, struct md_rdev *rdev)  in sysfs_unlink_rdev()
593 #define rdev_for_each(rdev, mddev)				\  argument
596 #define rdev_for_each_safe(rdev, tmp, mddev)				\  argument
599 #define rdev_for_each_rcu(rdev, mddev)				\  argument
604 	struct mddev		*mddev;  member
676 static inline int mddev_check_plugged(struct mddev *mddev)  in mddev_check_plugged()
682 static inline void rdev_dec_pending(struct md_rdev *rdev, struct mddev *mddev)  in rdev_dec_pending()
692 static inline int mddev_is_clustered(struct mddev *mddev)  in mddev_is_clustered()