87 	struct dcssblk_dev_info *dev_info;  in dcssblk_release_segment()  local
90 	dev_info = container_of(dev, struct dcssblk_dev_info, dev);  in dcssblk_release_segment()
91 	list_for_each_entry_safe(entry, temp, &dev_info->seg_list, lh) {  in dcssblk_release_segment()
95 	kfree(dev_info);  in dcssblk_release_segment()
106 dcssblk_assign_free_minor(struct dcssblk_dev_info *dev_info)  in dcssblk_assign_free_minor()  argument
111 	if (dev_info == NULL)  in dcssblk_assign_free_minor()
123 	dev_info->gd->first_minor = minor;  in dcssblk_assign_free_minor()
153 	struct dcssblk_dev_info *dev_info;  in dcssblk_get_segment_by_name()  local
156 	list_for_each_entry(dev_info, &dcssblk_devices, lh) {  in dcssblk_get_segment_by_name()
157 		list_for_each_entry(entry, &dev_info->seg_list, lh) {  in dcssblk_get_segment_by_name()
169 dcssblk_find_highest_addr(struct dcssblk_dev_info *dev_info)  in dcssblk_find_highest_addr()  argument
175 	list_for_each_entry(entry, &dev_info->seg_list, lh) {  in dcssblk_find_highest_addr()
186 dcssblk_find_lowest_addr(struct dcssblk_dev_info *dev_info)  in dcssblk_find_lowest_addr()  argument
194 	list_for_each_entry(entry, &dev_info->seg_list, lh) {  in dcssblk_find_lowest_addr()
210 dcssblk_is_continuous(struct dcssblk_dev_info *dev_info)  in dcssblk_is_continuous()  argument
215 	if (dev_info->num_of_segments <= 1)  in dcssblk_is_continuous()
219 			sizeof(struct segment_info) * dev_info->num_of_segments,  in dcssblk_is_continuous()
224 	list_for_each_entry(entry, &dev_info->seg_list, lh) {  in dcssblk_is_continuous()
230 	for (i = 0; i < dev_info->num_of_segments; i++)  in dcssblk_is_continuous()
231 		for (j = 0; j < dev_info->num_of_segments; j++)  in dcssblk_is_continuous()
242 	for (i = 0; i < dev_info->num_of_segments - 1; i++) {  in dcssblk_is_continuous()
314 	struct dcssblk_dev_info *dev_info;  in dcssblk_shared_show()  local
316 	dev_info = container_of(dev, struct dcssblk_dev_info, dev);  in dcssblk_shared_show()
317 	return sprintf(buf, dev_info->is_shared ? "1\n" : "0\n");  in dcssblk_shared_show()
323 	struct dcssblk_dev_info *dev_info;  in dcssblk_shared_store()  local
330 	dev_info = container_of(dev, struct dcssblk_dev_info, dev);  in dcssblk_shared_store()
331 	if (atomic_read(&dev_info->use_count)) {  in dcssblk_shared_store()
337 		list_for_each_entry(entry, &dev_info->seg_list, lh) {  in dcssblk_shared_store()
346 		dev_info->is_shared = 1;  in dcssblk_shared_store()
347 		switch (dev_info->segment_type) {  in dcssblk_shared_store()
351 			set_disk_ro(dev_info->gd, 1);  in dcssblk_shared_store()
355 		if (dev_info->segment_type == SEG_TYPE_SC) {  in dcssblk_shared_store()
358 			       dev_info->segment_name);  in dcssblk_shared_store()
362 		list_for_each_entry(entry, &dev_info->seg_list, lh) {  in dcssblk_shared_store()
371 		dev_info->is_shared = 0;  in dcssblk_shared_store()
372 		set_disk_ro(dev_info->gd, 0);  in dcssblk_shared_store()
382 	       "change\n", dev_info->segment_name);  in dcssblk_shared_store()
384 	list_for_each_entry(entry, &dev_info->seg_list, lh) {  in dcssblk_shared_store()
388 	list_del(&dev_info->lh);  in dcssblk_shared_store()
390 	del_gendisk(dev_info->gd);  in dcssblk_shared_store()
391 	blk_cleanup_queue(dev_info->dcssblk_queue);  in dcssblk_shared_store()
392 	dev_info->gd->queue = NULL;  in dcssblk_shared_store()
393 	put_disk(dev_info->gd);  in dcssblk_shared_store()
418 	struct dcssblk_dev_info *dev_info;  in dcssblk_save_show()  local
420 	dev_info = container_of(dev, struct dcssblk_dev_info, dev);  in dcssblk_save_show()
421 	return sprintf(buf, dev_info->save_pending ? "1\n" : "0\n");  in dcssblk_save_show()
427 	struct dcssblk_dev_info *dev_info;  in dcssblk_save_store()  local
432 	dev_info = container_of(dev, struct dcssblk_dev_info, dev);  in dcssblk_save_store()
436 		if (atomic_read(&dev_info->use_count) == 0) {  in dcssblk_save_store()
439 				"saved\n", dev_info->segment_name);  in dcssblk_save_store()
440 			list_for_each_entry(entry, &dev_info->seg_list, lh) {  in dcssblk_save_store()
454 				dev_info->segment_name);  in dcssblk_save_store()
455 			dev_info->save_pending = 1;  in dcssblk_save_store()
458 		if (dev_info->save_pending) {  in dcssblk_save_store()
461 			dev_info->save_pending = 0;  in dcssblk_save_store()
464 				dev_info->segment_name);  in dcssblk_save_store()
485 	struct dcssblk_dev_info *dev_info;  in dcssblk_seglist_show()  local
489 	dev_info = container_of(dev, struct dcssblk_dev_info, dev);  in dcssblk_seglist_show()
492 	list_for_each_entry(entry, &dev_info->seg_list, lh) {  in dcssblk_seglist_show()
524 	struct dcssblk_dev_info *dev_info;  in dcssblk_add_store()  local
529 	dev_info = NULL;  in dcssblk_add_store()
570 			dev_info = kzalloc(sizeof(struct dcssblk_dev_info),  in dcssblk_add_store()
572 			if (dev_info == NULL) {  in dcssblk_add_store()
576 			strcpy(dev_info->segment_name, local_buf);  in dcssblk_add_store()
577 			dev_info->segment_type = seg_info->segment_type;  in dcssblk_add_store()
578 			INIT_LIST_HEAD(&dev_info->seg_list);  in dcssblk_add_store()
580 		list_add_tail(&seg_info->lh, &dev_info->seg_list);  in dcssblk_add_store()
594 	dev_info->num_of_segments = num_of_segments;  in dcssblk_add_store()
595 	rc = dcssblk_is_continuous(dev_info);  in dcssblk_add_store()
599 	dev_info->start = dcssblk_find_lowest_addr(dev_info);  in dcssblk_add_store()
600 	dev_info->end = dcssblk_find_highest_addr(dev_info);  in dcssblk_add_store()
602 	dev_set_name(&dev_info->dev, "%s", dev_info->segment_name);  in dcssblk_add_store()
603 	dev_info->dev.release = dcssblk_release_segment;  in dcssblk_add_store()
604 	dev_info->dev.groups = dcssblk_dev_attr_groups;  in dcssblk_add_store()
605 	INIT_LIST_HEAD(&dev_info->lh);  in dcssblk_add_store()
606 	dev_info->gd = alloc_disk(DCSSBLK_MINORS_PER_DISK);  in dcssblk_add_store()
607 	if (dev_info->gd == NULL) {  in dcssblk_add_store()
611 	dev_info->gd->major = dcssblk_major;  in dcssblk_add_store()
612 	dev_info->gd->fops = &dcssblk_devops;  in dcssblk_add_store()
613 	dev_info->dcssblk_queue = blk_alloc_queue(GFP_KERNEL);  in dcssblk_add_store()
614 	dev_info->gd->queue = dev_info->dcssblk_queue;  in dcssblk_add_store()
615 	dev_info->gd->private_data = dev_info;  in dcssblk_add_store()
616 	dev_info->gd->driverfs_dev = &dev_info->dev;  in dcssblk_add_store()
617 	blk_queue_make_request(dev_info->dcssblk_queue, dcssblk_make_request);  in dcssblk_add_store()
618 	blk_queue_logical_block_size(dev_info->dcssblk_queue, 4096);  in dcssblk_add_store()
620 	seg_byte_size = (dev_info->end - dev_info->start + 1);  in dcssblk_add_store()
621 	set_capacity(dev_info->gd, seg_byte_size >> 9); // size in sectors  in dcssblk_add_store()
625 	dev_info->save_pending = 0;  in dcssblk_add_store()
626 	dev_info->is_shared = 1;  in dcssblk_add_store()
627 	dev_info->dev.parent = dcssblk_root_dev;  in dcssblk_add_store()
637 	rc = dcssblk_assign_free_minor(dev_info);  in dcssblk_add_store()
640 	sprintf(dev_info->gd->disk_name, "dcssblk%d",  in dcssblk_add_store()
641 		dev_info->gd->first_minor);  in dcssblk_add_store()
642 	list_add_tail(&dev_info->lh, &dcssblk_devices);  in dcssblk_add_store()
651 	rc = device_register(&dev_info->dev);  in dcssblk_add_store()
655 	get_device(&dev_info->dev);  in dcssblk_add_store()
656 	add_disk(dev_info->gd);  in dcssblk_add_store()
658 	switch (dev_info->segment_type) {  in dcssblk_add_store()
662 			set_disk_ro(dev_info->gd,1);  in dcssblk_add_store()
665 			set_disk_ro(dev_info->gd,0);  in dcssblk_add_store()
673 	list_del(&dev_info->lh);  in dcssblk_add_store()
674 	blk_cleanup_queue(dev_info->dcssblk_queue);  in dcssblk_add_store()
675 	dev_info->gd->queue = NULL;  in dcssblk_add_store()
676 	put_disk(dev_info->gd);  in dcssblk_add_store()
677 	list_for_each_entry(seg_info, &dev_info->seg_list, lh) {  in dcssblk_add_store()
680 	put_device(&dev_info->dev);  in dcssblk_add_store()
684 	list_del(&dev_info->lh);  in dcssblk_add_store()
686 	blk_cleanup_queue(dev_info->dcssblk_queue);  in dcssblk_add_store()
687 	dev_info->gd->queue = NULL;  in dcssblk_add_store()
688 	put_disk(dev_info->gd);  in dcssblk_add_store()
691 	if (dev_info == NULL)  in dcssblk_add_store()
693 	list_for_each_entry_safe(seg_info, temp, &dev_info->seg_list, lh) {  in dcssblk_add_store()
698 	kfree(dev_info);  in dcssblk_add_store()
711 	struct dcssblk_dev_info *dev_info;  in dcssblk_remove_store()  local
736 	dev_info = dcssblk_get_device_by_name(local_buf);  in dcssblk_remove_store()
737 	if (dev_info == NULL) {  in dcssblk_remove_store()
744 	if (atomic_read(&dev_info->use_count) != 0) {  in dcssblk_remove_store()
752 	list_del(&dev_info->lh);  in dcssblk_remove_store()
753 	del_gendisk(dev_info->gd);  in dcssblk_remove_store()
754 	blk_cleanup_queue(dev_info->dcssblk_queue);  in dcssblk_remove_store()
755 	dev_info->gd->queue = NULL;  in dcssblk_remove_store()
756 	put_disk(dev_info->gd);  in dcssblk_remove_store()
757 	device_unregister(&dev_info->dev);  in dcssblk_remove_store()
760 	list_for_each_entry(entry, &dev_info->seg_list, lh)  in dcssblk_remove_store()
763 	put_device(&dev_info->dev);  in dcssblk_remove_store()
775 	struct dcssblk_dev_info *dev_info;  in dcssblk_open()  local
778 	dev_info = bdev->bd_disk->private_data;  in dcssblk_open()
779 	if (NULL == dev_info) {  in dcssblk_open()
783 	atomic_inc(&dev_info->use_count);  in dcssblk_open()
793 	struct dcssblk_dev_info *dev_info = disk->private_data;  in dcssblk_release()  local
796 	if (!dev_info) {  in dcssblk_release()
801 	if (atomic_dec_and_test(&dev_info->use_count)  in dcssblk_release()
802 	    && (dev_info->save_pending)) {  in dcssblk_release()
804 			"now\n", dev_info->segment_name);  in dcssblk_release()
805 		list_for_each_entry(entry, &dev_info->seg_list, lh) {  in dcssblk_release()
813 		dev_info->save_pending = 0;  in dcssblk_release()
821 	struct dcssblk_dev_info *dev_info;  in dcssblk_make_request()  local
830 	dev_info = bio->bi_bdev->bd_disk->private_data;  in dcssblk_make_request()
831 	if (dev_info == NULL)  in dcssblk_make_request()
842 	if (dev_info->is_shared) {  in dcssblk_make_request()
843 		switch (dev_info->segment_type) {  in dcssblk_make_request()
851 					   dev_name(&dev_info->dev));  in dcssblk_make_request()
861 		source_addr = dev_info->start + (index<<12) + bytes_done;  in dcssblk_make_request()
884 	struct dcssblk_dev_info *dev_info;  in dcssblk_direct_access()  local
887 	dev_info = bdev->bd_disk->private_data;  in dcssblk_direct_access()
888 	if (!dev_info)  in dcssblk_direct_access()
890 	dev_sz = dev_info->end - dev_info->start;  in dcssblk_direct_access()
892 	*kaddr = (void *) (dev_info->start + offset);  in dcssblk_direct_access()
903 	struct dcssblk_dev_info *dev_info;  in dcssblk_check_params()  local
922 				dev_info = dcssblk_get_device_by_name(buf);  in dcssblk_check_params()
924 				if (dev_info)  in dcssblk_check_params()
925 					dcssblk_shared_store(&dev_info->dev,  in dcssblk_check_params()
945 	struct dcssblk_dev_info *dev_info;  in dcssblk_freeze()  local
948 	list_for_each_entry(dev_info, &dcssblk_devices, lh) {  in dcssblk_freeze()
949 		switch (dev_info->segment_type) {  in dcssblk_freeze()
953 				if (!dev_info->is_shared)  in dcssblk_freeze()
966 		       dev_info->segment_name);  in dcssblk_freeze()
972 	struct dcssblk_dev_info *dev_info;  in dcssblk_restore()  local
977 	list_for_each_entry(dev_info, &dcssblk_devices, lh) {  in dcssblk_restore()
978 		list_for_each_entry(entry, &dev_info->seg_list, lh) {  in dcssblk_restore()