drivers/md/raid0.c

40 	struct r0conf *conf = mddev->private;
41 	int raid_disks = conf->strip_zone[0].nb_dev;
44 		 conf->nr_strip_zones, conf->nr_strip_zones==1?"":"s");
45 	for (j = 0; j < conf->nr_strip_zones; j++) {
49 		for (k = 0; k < conf->strip_zone[j].nb_dev; k++)
51 				conf->devlist[j * raid_disks + k]->bdev);
54 		zone_size  = conf->strip_zone[j].zone_end - zone_start;
57 			(unsigned long long)conf->strip_zone[j].dev_start>>1,
59 		zone_start = conf->strip_zone[j].zone_end;
70 	struct r0conf *conf = kzalloc(sizeof(*conf), GFP_KERNEL);
74 	if (!conf)
119 			conf->nr_strip_zones++;
121 				 mdname(mddev), conf->nr_strip_zones);
125 		 mdname(mddev), conf->nr_strip_zones);
140 	conf->strip_zone = kcalloc(conf->nr_strip_zones,
143 	if (!conf->strip_zone)
145 	conf->devlist = kzalloc(array3_size(sizeof(struct md_rdev *),
146 					    conf->nr_strip_zones,
149 	if (!conf->devlist)
155 	zone = &conf->strip_zone[0];
158 	dev = conf->devlist;
209 	for (i = 1; i < conf->nr_strip_zones; i++)
213 		zone = conf->strip_zone + i;
214 		dev = conf->devlist + i * mddev->raid_disks;
222 			rdev = conf->devlist[j];
257 	if (conf->nr_strip_zones == 1 || conf->strip_zone[1].nb_dev == 1) {
258 		conf->layout = RAID0_ORIG_LAYOUT;
261 		conf->layout = mddev->layout;
264 		conf->layout = default_layout;
273 	if (conf->layout == RAID0_ORIG_LAYOUT) {
274 		for (i = 1; i < conf->nr_strip_zones; i++) {
275 			sector_t first_sector = conf->strip_zone[i-1].zone_end;
278 			zone = conf->strip_zone + i;
286 	*private_conf = conf;
290 	kfree(conf->strip_zone);
291 	kfree(conf->devlist);
292 	kfree(conf);
300 static struct strip_zone *find_zone(struct r0conf *conf,
304 	struct strip_zone *z = conf->strip_zone;
307 	for (i = 0; i < conf->nr_strip_zones; i++)
325 	struct r0conf *conf = mddev->private;
326 	int raid_disks = conf->strip_zone[0].nb_dev;
349 	return conf->devlist[(zone - conf->strip_zone)*raid_disks
368 static void free_conf(struct mddev *mddev, struct r0conf *conf)
370 	kfree(conf->strip_zone);
371 	kfree(conf->devlist);
372 	kfree(conf);
377 	struct r0conf *conf = priv;
379 	free_conf(mddev, conf);
397 	struct r0conf *conf;
409 		ret = create_strip_zones(mddev, &conf);
412 		mddev->private = conf;
414 	conf = mddev->private;
435 	free_conf(mddev, conf);
455 	struct r0conf *conf = mddev->private;
469 	zone = find_zone(conf, &start);
483 	if (zone != conf->strip_zone)
495 	if ((conf->layout == RAID0_ORIG_LAYOUT) && (zone != conf->strip_zone)) {
544 		rdev = conf->devlist[(zone - conf->strip_zone) *
545 			conf->strip_zone[0].nb_dev + disk];
555 	struct r0conf *conf = mddev->private;
564 	switch (conf->layout) {