drivers/md/dm-mpath.c

60 struct multipath {  struct
61 	struct list_head list;
62 	struct dm_target *ti;
64 	spinlock_t lock;
66 	const char *hw_handler_name;
67 	char *hw_handler_params;
69 	unsigned nr_priority_groups;
70 	struct list_head priority_groups;
72 	wait_queue_head_t pg_init_wait;	/* Wait for pg_init completion */
74 	unsigned pg_init_required;	/* pg_init needs calling? */
75 	unsigned pg_init_in_progress;	/* Only one pg_init allowed at once */
76 	unsigned pg_init_delay_retry;	/* Delay pg_init retry? */
78 	unsigned nr_valid_paths;	/* Total number of usable paths */
79 	struct pgpath *current_pgpath;
80 	struct priority_group *current_pg;
81 	struct priority_group *next_pg;	/* Switch to this PG if set */
82 	unsigned repeat_count;		/* I/Os left before calling PS again */
84 	unsigned queue_io;		/* Must we queue all I/O? */
85 	unsigned queue_if_no_path;	/* Queue I/O if last path fails? */
86 	unsigned saved_queue_if_no_path;/* Saved state during suspension */
87 	unsigned pg_init_retries;	/* Number of times to retry pg_init */
88 	unsigned pg_init_count;		/* Number of times pg_init called */
89 	unsigned pg_init_delay_msecs;	/* Number of msecs before pg_init retry */
91 	struct work_struct process_queued_ios;
92 	struct list_head queued_ios;
93 	unsigned queue_size;
95 	struct work_struct trigger_event;
120 static struct workqueue_struct *kmultipathd, *kmpath_handlerd;  argument