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()
98 	rdev_dec_pending(rdev, conf->mddev);  in multipath_end_request()
103 	struct mpconf *conf = mddev->private;  in multipath_make_request()  local
111 	mp_bh = mempool_alloc(&conf->pool, GFP_NOIO);  in multipath_make_request()
116 	mp_bh->path = multipath_map(conf);  in multipath_make_request()
119 		mempool_free(mp_bh, &conf->pool);  in multipath_make_request()
122 	multipath = conf->multipaths + mp_bh->path;  in multipath_make_request()
140 	struct mpconf *conf = mddev->private;  in multipath_status()  local
143 	seq_printf (seq, " [%d/%d] [", conf->raid_disks,  in multipath_status()
144 		    conf->raid_disks - mddev->degraded);  in multipath_status()
146 	for (i = 0; i < conf->raid_disks; i++) {  in multipath_status()
147 		struct md_rdev *rdev = rcu_dereference(conf->multipaths[i].rdev);  in multipath_status()
159 	struct mpconf *conf = mddev->private;  in multipath_error()  local
162 	if (conf->raid_disks - mddev->degraded <= 1) {  in multipath_error()
177 		spin_lock_irqsave(&conf->device_lock, flags);  in multipath_error()
179 		spin_unlock_irqrestore(&conf->device_lock, flags);  in multipath_error()
186 	       conf->raid_disks - mddev->degraded);  in multipath_error()
189 static void print_multipath_conf (struct mpconf *conf)  in print_multipath_conf()  argument
195 	if (!conf) {  in print_multipath_conf()
199 	pr_debug(" --- wd:%d rd:%d\n", conf->raid_disks - conf->mddev->degraded,  in print_multipath_conf()
200 		 conf->raid_disks);  in print_multipath_conf()
202 	for (i = 0; i < conf->raid_disks; i++) {  in print_multipath_conf()
204 		tmp = conf->multipaths + i;  in print_multipath_conf()
214 	struct mpconf *conf = mddev->private;  in multipath_add_disk()  local
224 	print_multipath_conf(conf);  in multipath_add_disk()
227 		if ((p=conf->multipaths+path)->rdev == NULL) {  in multipath_add_disk()
234 			spin_lock_irq(&conf->device_lock);  in multipath_add_disk()
238 			spin_unlock_irq(&conf->device_lock);  in multipath_add_disk()
244 	print_multipath_conf(conf);  in multipath_add_disk()
251 	struct mpconf *conf = mddev->private;  in multipath_remove_disk()  local
254 	struct multipath_info *p = conf->multipaths + number;  in multipath_remove_disk()
256 	print_multipath_conf(conf);  in multipath_remove_disk()
279 	print_multipath_conf(conf);  in multipath_remove_disk()
297 	struct mpconf *conf = mddev->private;  in multipathd()  local
298 	struct list_head *head = &conf->retry_list;  in multipathd()
303 		spin_lock_irqsave(&conf->device_lock, flags);  in multipathd()
308 		spin_unlock_irqrestore(&conf->device_lock, flags);  in multipathd()
313 		if ((mp_bh->path = multipath_map (conf))<0) {  in multipathd()
324 				conf->multipaths[mp_bh->path].rdev->data_offset;  in multipathd()
325 			bio_set_dev(bio, conf->multipaths[mp_bh->path].rdev->bdev);  in multipathd()
332 	spin_unlock_irqrestore(&conf->device_lock, flags);  in multipathd()
345 	struct mpconf *conf;  in multipath_run()  local
366 	conf = kzalloc(sizeof(struct mpconf), GFP_KERNEL);  in multipath_run()
367 	mddev->private = conf;  in multipath_run()
368 	if (!conf)  in multipath_run()
371 	conf->multipaths = kcalloc(mddev->raid_disks,  in multipath_run()
374 	if (!conf->multipaths)  in multipath_run()
384 		disk = conf->multipaths + disk_idx;  in multipath_run()
393 	conf->raid_disks = mddev->raid_disks;  in multipath_run()
394 	conf->mddev = mddev;  in multipath_run()
395 	spin_lock_init(&conf->device_lock);  in multipath_run()
396 	INIT_LIST_HEAD(&conf->retry_list);  in multipath_run()
403 	mddev->degraded = conf->raid_disks - working_disks;  in multipath_run()
405 	ret = mempool_init_kmalloc_pool(&conf->pool, NR_RESERVED_BUFS,  in multipath_run()
416 		mdname(mddev), conf->raid_disks - mddev->degraded,  in multipath_run()
429 	mempool_exit(&conf->pool);  in multipath_run()
430 	kfree(conf->multipaths);  in multipath_run()
431 	kfree(conf);  in multipath_run()
439 	struct mpconf *conf = priv;  in multipath_free()  local
441 	mempool_exit(&conf->pool);  in multipath_free()
442 	kfree(conf->multipaths);  in multipath_free()
443 	kfree(conf);  in multipath_free()