26 static int multipath_map (struct mpconf *conf)  in multipath_map()  argument
28 	int i, disks = conf->raid_disks;  in multipath_map()
37 		struct md_rdev *rdev = rcu_dereference(conf->multipaths[i].rdev);  in multipath_map()
55 	struct mpconf *conf = mddev->private;  in multipath_reschedule_retry()  local
57 	spin_lock_irqsave(&conf->device_lock, flags);  in multipath_reschedule_retry()
58 	list_add(&mp_bh->retry_list, &conf->retry_list);  in multipath_reschedule_retry()
59 	spin_unlock_irqrestore(&conf->device_lock, flags);  in multipath_reschedule_retry()
71 	struct mpconf *conf = mp_bh->mddev->private;  in multipath_end_bh_io()  local
75 	mempool_free(mp_bh, &conf->pool);  in multipath_end_bh_io()
81 	struct mpconf *conf = mp_bh->mddev->private;  in multipath_end_request()  local
82 	struct md_rdev *rdev = conf->multipaths[mp_bh->path].rdev;  in multipath_end_request()
97 	rdev_dec_pending(rdev, conf->mddev);  in multipath_end_request()
102 	struct mpconf *conf = mddev->private;  in multipath_make_request()  local
110 	mp_bh = mempool_alloc(&conf->pool, GFP_NOIO);  in multipath_make_request()
115 	mp_bh->path = multipath_map(conf);  in multipath_make_request()
118 		mempool_free(mp_bh, &conf->pool);  in multipath_make_request()
121 	multipath = conf->multipaths + mp_bh->path;  in multipath_make_request()
136 	struct mpconf *conf = mddev->private;  in multipath_status()  local
139 	seq_printf (seq, " [%d/%d] [", conf->raid_disks,  in multipath_status()
140 		    conf->raid_disks - mddev->degraded);  in multipath_status()
142 	for (i = 0; i < conf->raid_disks; i++) {  in multipath_status()
143 		struct md_rdev *rdev = rcu_dereference(conf->multipaths[i].rdev);  in multipath_status()
155 	struct mpconf *conf = mddev->private;  in multipath_error()  local
157 	if (conf->raid_disks - mddev->degraded <= 1) {  in multipath_error()
172 		spin_lock_irqsave(&conf->device_lock, flags);  in multipath_error()
174 		spin_unlock_irqrestore(&conf->device_lock, flags);  in multipath_error()
181 	       conf->raid_disks - mddev->degraded);  in multipath_error()
184 static void print_multipath_conf (struct mpconf *conf)  in print_multipath_conf()  argument
190 	if (!conf) {  in print_multipath_conf()
194 	pr_debug(" --- wd:%d rd:%d\n", conf->raid_disks - conf->mddev->degraded,  in print_multipath_conf()
195 		 conf->raid_disks);  in print_multipath_conf()
197 	for (i = 0; i < conf->raid_disks; i++) {  in print_multipath_conf()
198 		tmp = conf->multipaths + i;  in print_multipath_conf()
208 	struct mpconf *conf = mddev->private;  in multipath_add_disk()  local
218 	print_multipath_conf(conf);  in multipath_add_disk()
221 		if ((p=conf->multipaths+path)->rdev == NULL) {  in multipath_add_disk()
228 			spin_lock_irq(&conf->device_lock);  in multipath_add_disk()
232 			spin_unlock_irq(&conf->device_lock);  in multipath_add_disk()
238 	print_multipath_conf(conf);  in multipath_add_disk()
245 	struct mpconf *conf = mddev->private;  in multipath_remove_disk()  local
248 	struct multipath_info *p = conf->multipaths + number;  in multipath_remove_disk()
250 	print_multipath_conf(conf);  in multipath_remove_disk()
273 	print_multipath_conf(conf);  in multipath_remove_disk()
291 	struct mpconf *conf = mddev->private;  in multipathd()  local
292 	struct list_head *head = &conf->retry_list;  in multipathd()
296 		spin_lock_irqsave(&conf->device_lock, flags);  in multipathd()
301 		spin_unlock_irqrestore(&conf->device_lock, flags);  in multipathd()
306 		if ((mp_bh->path = multipath_map (conf))<0) {  in multipathd()
317 				conf->multipaths[mp_bh->path].rdev->data_offset;  in multipathd()
318 			bio_set_dev(bio, conf->multipaths[mp_bh->path].rdev->bdev);  in multipathd()
325 	spin_unlock_irqrestore(&conf->device_lock, flags);  in multipathd()
338 	struct mpconf *conf;  in multipath_run()  local
359 	conf = kzalloc(sizeof(struct mpconf), GFP_KERNEL);  in multipath_run()
360 	mddev->private = conf;  in multipath_run()
361 	if (!conf)  in multipath_run()
364 	conf->multipaths = kcalloc(mddev->raid_disks,  in multipath_run()
367 	if (!conf->multipaths)  in multipath_run()
377 		disk = conf->multipaths + disk_idx;  in multipath_run()
386 	conf->raid_disks = mddev->raid_disks;  in multipath_run()
387 	conf->mddev = mddev;  in multipath_run()
388 	spin_lock_init(&conf->device_lock);  in multipath_run()
389 	INIT_LIST_HEAD(&conf->retry_list);  in multipath_run()
396 	mddev->degraded = conf->raid_disks - working_disks;  in multipath_run()
398 	ret = mempool_init_kmalloc_pool(&conf->pool, NR_RESERVED_BUFS,  in multipath_run()
409 		mdname(mddev), conf->raid_disks - mddev->degraded,  in multipath_run()
422 	mempool_exit(&conf->pool);  in multipath_run()
423 	kfree(conf->multipaths);  in multipath_run()
424 	kfree(conf);  in multipath_run()
432 	struct mpconf *conf = priv;  in multipath_free()  local
434 	mempool_exit(&conf->pool);  in multipath_free()
435 	kfree(conf->multipaths);  in multipath_free()
436 	kfree(conf);  in multipath_free()