88 	struct dcssblk_dev_info *dev_info;  in dcssblk_release_segment()  local
91 	dev_info = container_of(dev, struct dcssblk_dev_info, dev);  in dcssblk_release_segment()
92 	list_for_each_entry_safe(entry, temp, &dev_info->seg_list, lh) {  in dcssblk_release_segment()
96 	kfree(dev_info);  in dcssblk_release_segment()
107 dcssblk_assign_free_minor(struct dcssblk_dev_info *dev_info)  in dcssblk_assign_free_minor()  argument
112 	if (dev_info == NULL)  in dcssblk_assign_free_minor()
124 	dev_info->gd->first_minor = minor;  in dcssblk_assign_free_minor()
154 	struct dcssblk_dev_info *dev_info;  in dcssblk_get_segment_by_name()  local
157 	list_for_each_entry(dev_info, &dcssblk_devices, lh) {  in dcssblk_get_segment_by_name()
158 		list_for_each_entry(entry, &dev_info->seg_list, lh) {  in dcssblk_get_segment_by_name()
170 dcssblk_find_highest_addr(struct dcssblk_dev_info *dev_info)  in dcssblk_find_highest_addr()  argument
176 	list_for_each_entry(entry, &dev_info->seg_list, lh) {  in dcssblk_find_highest_addr()
187 dcssblk_find_lowest_addr(struct dcssblk_dev_info *dev_info)  in dcssblk_find_lowest_addr()  argument
195 	list_for_each_entry(entry, &dev_info->seg_list, lh) {  in dcssblk_find_lowest_addr()
211 dcssblk_is_continuous(struct dcssblk_dev_info *dev_info)  in dcssblk_is_continuous()  argument
216 	if (dev_info->num_of_segments <= 1)  in dcssblk_is_continuous()
220 			sizeof(struct segment_info) * dev_info->num_of_segments,  in dcssblk_is_continuous()
225 	list_for_each_entry(entry, &dev_info->seg_list, lh) {  in dcssblk_is_continuous()
231 	for (i = 0; i < dev_info->num_of_segments; i++)  in dcssblk_is_continuous()
232 		for (j = 0; j < dev_info->num_of_segments; j++)  in dcssblk_is_continuous()
243 	for (i = 0; i < dev_info->num_of_segments - 1; i++) {  in dcssblk_is_continuous()
315 	struct dcssblk_dev_info *dev_info;  in dcssblk_shared_show()  local
317 	dev_info = container_of(dev, struct dcssblk_dev_info, dev);  in dcssblk_shared_show()
318 	return sprintf(buf, dev_info->is_shared ? "1\n" : "0\n");  in dcssblk_shared_show()
324 	struct dcssblk_dev_info *dev_info;  in dcssblk_shared_store()  local
331 	dev_info = container_of(dev, struct dcssblk_dev_info, dev);  in dcssblk_shared_store()
332 	if (atomic_read(&dev_info->use_count)) {  in dcssblk_shared_store()
338 		list_for_each_entry(entry, &dev_info->seg_list, lh) {  in dcssblk_shared_store()
347 		dev_info->is_shared = 1;  in dcssblk_shared_store()
348 		switch (dev_info->segment_type) {  in dcssblk_shared_store()
352 			set_disk_ro(dev_info->gd, 1);  in dcssblk_shared_store()
356 		if (dev_info->segment_type == SEG_TYPE_SC) {  in dcssblk_shared_store()
359 			       dev_info->segment_name);  in dcssblk_shared_store()
363 		list_for_each_entry(entry, &dev_info->seg_list, lh) {  in dcssblk_shared_store()
372 		dev_info->is_shared = 0;  in dcssblk_shared_store()
373 		set_disk_ro(dev_info->gd, 0);  in dcssblk_shared_store()
383 	       "change\n", dev_info->segment_name);  in dcssblk_shared_store()
385 	list_for_each_entry(entry, &dev_info->seg_list, lh) {  in dcssblk_shared_store()
389 	list_del(&dev_info->lh);  in dcssblk_shared_store()
391 	del_gendisk(dev_info->gd);  in dcssblk_shared_store()
392 	blk_cleanup_queue(dev_info->dcssblk_queue);  in dcssblk_shared_store()
393 	dev_info->gd->queue = NULL;  in dcssblk_shared_store()
394 	put_disk(dev_info->gd);  in dcssblk_shared_store()
419 	struct dcssblk_dev_info *dev_info;  in dcssblk_save_show()  local
421 	dev_info = container_of(dev, struct dcssblk_dev_info, dev);  in dcssblk_save_show()
422 	return sprintf(buf, dev_info->save_pending ? "1\n" : "0\n");  in dcssblk_save_show()
428 	struct dcssblk_dev_info *dev_info;  in dcssblk_save_store()  local
433 	dev_info = container_of(dev, struct dcssblk_dev_info, dev);  in dcssblk_save_store()
437 		if (atomic_read(&dev_info->use_count) == 0) {  in dcssblk_save_store()
440 				"saved\n", dev_info->segment_name);  in dcssblk_save_store()
441 			list_for_each_entry(entry, &dev_info->seg_list, lh) {  in dcssblk_save_store()
455 				dev_info->segment_name);  in dcssblk_save_store()
456 			dev_info->save_pending = 1;  in dcssblk_save_store()
459 		if (dev_info->save_pending) {  in dcssblk_save_store()
462 			dev_info->save_pending = 0;  in dcssblk_save_store()
465 				dev_info->segment_name);  in dcssblk_save_store()
486 	struct dcssblk_dev_info *dev_info;  in dcssblk_seglist_show()  local
490 	dev_info = container_of(dev, struct dcssblk_dev_info, dev);  in dcssblk_seglist_show()
493 	list_for_each_entry(entry, &dev_info->seg_list, lh) {  in dcssblk_seglist_show()
525 	struct dcssblk_dev_info *dev_info;  in dcssblk_add_store()  local
530 	dev_info = NULL;  in dcssblk_add_store()
571 			dev_info = kzalloc(sizeof(struct dcssblk_dev_info),  in dcssblk_add_store()
573 			if (dev_info == NULL) {  in dcssblk_add_store()
577 			strcpy(dev_info->segment_name, local_buf);  in dcssblk_add_store()
578 			dev_info->segment_type = seg_info->segment_type;  in dcssblk_add_store()
579 			INIT_LIST_HEAD(&dev_info->seg_list);  in dcssblk_add_store()
581 		list_add_tail(&seg_info->lh, &dev_info->seg_list);  in dcssblk_add_store()
595 	dev_info->num_of_segments = num_of_segments;  in dcssblk_add_store()
596 	rc = dcssblk_is_continuous(dev_info);  in dcssblk_add_store()
600 	dev_info->start = dcssblk_find_lowest_addr(dev_info);  in dcssblk_add_store()
601 	dev_info->end = dcssblk_find_highest_addr(dev_info);  in dcssblk_add_store()
603 	dev_set_name(&dev_info->dev, "%s", dev_info->segment_name);  in dcssblk_add_store()
604 	dev_info->dev.release = dcssblk_release_segment;  in dcssblk_add_store()
605 	dev_info->dev.groups = dcssblk_dev_attr_groups;  in dcssblk_add_store()
606 	INIT_LIST_HEAD(&dev_info->lh);  in dcssblk_add_store()
607 	dev_info->gd = alloc_disk(DCSSBLK_MINORS_PER_DISK);  in dcssblk_add_store()
608 	if (dev_info->gd == NULL) {  in dcssblk_add_store()
612 	dev_info->gd->major = dcssblk_major;  in dcssblk_add_store()
613 	dev_info->gd->fops = &dcssblk_devops;  in dcssblk_add_store()
614 	dev_info->dcssblk_queue = blk_alloc_queue(GFP_KERNEL);  in dcssblk_add_store()
615 	dev_info->gd->queue = dev_info->dcssblk_queue;  in dcssblk_add_store()
616 	dev_info->gd->private_data = dev_info;  in dcssblk_add_store()
617 	dev_info->gd->driverfs_dev = &dev_info->dev;  in dcssblk_add_store()
618 	blk_queue_make_request(dev_info->dcssblk_queue, dcssblk_make_request);  in dcssblk_add_store()
619 	blk_queue_logical_block_size(dev_info->dcssblk_queue, 4096);  in dcssblk_add_store()
621 	seg_byte_size = (dev_info->end - dev_info->start + 1);  in dcssblk_add_store()
622 	set_capacity(dev_info->gd, seg_byte_size >> 9); // size in sectors  in dcssblk_add_store()
626 	dev_info->save_pending = 0;  in dcssblk_add_store()
627 	dev_info->is_shared = 1;  in dcssblk_add_store()
628 	dev_info->dev.parent = dcssblk_root_dev;  in dcssblk_add_store()
638 	rc = dcssblk_assign_free_minor(dev_info);  in dcssblk_add_store()
641 	sprintf(dev_info->gd->disk_name, "dcssblk%d",  in dcssblk_add_store()
642 		dev_info->gd->first_minor);  in dcssblk_add_store()
643 	list_add_tail(&dev_info->lh, &dcssblk_devices);  in dcssblk_add_store()
652 	rc = device_register(&dev_info->dev);  in dcssblk_add_store()
656 	get_device(&dev_info->dev);  in dcssblk_add_store()
657 	add_disk(dev_info->gd);  in dcssblk_add_store()
659 	switch (dev_info->segment_type) {  in dcssblk_add_store()
663 			set_disk_ro(dev_info->gd,1);  in dcssblk_add_store()
666 			set_disk_ro(dev_info->gd,0);  in dcssblk_add_store()
674 	list_del(&dev_info->lh);  in dcssblk_add_store()
675 	blk_cleanup_queue(dev_info->dcssblk_queue);  in dcssblk_add_store()
676 	dev_info->gd->queue = NULL;  in dcssblk_add_store()
677 	put_disk(dev_info->gd);  in dcssblk_add_store()
678 	list_for_each_entry(seg_info, &dev_info->seg_list, lh) {  in dcssblk_add_store()
681 	put_device(&dev_info->dev);  in dcssblk_add_store()
685 	list_del(&dev_info->lh);  in dcssblk_add_store()
687 	blk_cleanup_queue(dev_info->dcssblk_queue);  in dcssblk_add_store()
688 	dev_info->gd->queue = NULL;  in dcssblk_add_store()
689 	put_disk(dev_info->gd);  in dcssblk_add_store()
692 	if (dev_info == NULL)  in dcssblk_add_store()
694 	list_for_each_entry_safe(seg_info, temp, &dev_info->seg_list, lh) {  in dcssblk_add_store()
699 	kfree(dev_info);  in dcssblk_add_store()
712 	struct dcssblk_dev_info *dev_info;  in dcssblk_remove_store()  local
737 	dev_info = dcssblk_get_device_by_name(local_buf);  in dcssblk_remove_store()
738 	if (dev_info == NULL) {  in dcssblk_remove_store()
745 	if (atomic_read(&dev_info->use_count) != 0) {  in dcssblk_remove_store()
753 	list_del(&dev_info->lh);  in dcssblk_remove_store()
754 	del_gendisk(dev_info->gd);  in dcssblk_remove_store()
755 	blk_cleanup_queue(dev_info->dcssblk_queue);  in dcssblk_remove_store()
756 	dev_info->gd->queue = NULL;  in dcssblk_remove_store()
757 	put_disk(dev_info->gd);  in dcssblk_remove_store()
758 	device_unregister(&dev_info->dev);  in dcssblk_remove_store()
761 	list_for_each_entry(entry, &dev_info->seg_list, lh)  in dcssblk_remove_store()
764 	put_device(&dev_info->dev);  in dcssblk_remove_store()
776 	struct dcssblk_dev_info *dev_info;  in dcssblk_open()  local
779 	dev_info = bdev->bd_disk->private_data;  in dcssblk_open()
780 	if (NULL == dev_info) {  in dcssblk_open()
784 	atomic_inc(&dev_info->use_count);  in dcssblk_open()
794 	struct dcssblk_dev_info *dev_info = disk->private_data;  in dcssblk_release()  local
797 	if (!dev_info) {  in dcssblk_release()
802 	if (atomic_dec_and_test(&dev_info->use_count)  in dcssblk_release()
803 	    && (dev_info->save_pending)) {  in dcssblk_release()
805 			"now\n", dev_info->segment_name);  in dcssblk_release()
806 		list_for_each_entry(entry, &dev_info->seg_list, lh) {  in dcssblk_release()
814 		dev_info->save_pending = 0;  in dcssblk_release()
822 	struct dcssblk_dev_info *dev_info;  in dcssblk_make_request()  local
833 	dev_info = bio->bi_bdev->bd_disk->private_data;  in dcssblk_make_request()
834 	if (dev_info == NULL)  in dcssblk_make_request()
845 	if (dev_info->is_shared) {  in dcssblk_make_request()
846 		switch (dev_info->segment_type) {  in dcssblk_make_request()
854 					   dev_name(&dev_info->dev));  in dcssblk_make_request()
864 		source_addr = dev_info->start + (index<<12) + bytes_done;  in dcssblk_make_request()
888 	struct dcssblk_dev_info *dev_info;  in dcssblk_direct_access()  local
892 	dev_info = bdev->bd_disk->private_data;  in dcssblk_direct_access()
893 	if (!dev_info)  in dcssblk_direct_access()
895 	dev_sz = dev_info->end - dev_info->start;  in dcssblk_direct_access()
897 	addr = (void *) (dev_info->start + offset);  in dcssblk_direct_access()
909 	struct dcssblk_dev_info *dev_info;  in dcssblk_check_params()  local
928 				dev_info = dcssblk_get_device_by_name(buf);  in dcssblk_check_params()
930 				if (dev_info)  in dcssblk_check_params()
931 					dcssblk_shared_store(&dev_info->dev,  in dcssblk_check_params()
951 	struct dcssblk_dev_info *dev_info;  in dcssblk_freeze()  local
954 	list_for_each_entry(dev_info, &dcssblk_devices, lh) {  in dcssblk_freeze()
955 		switch (dev_info->segment_type) {  in dcssblk_freeze()
959 				if (!dev_info->is_shared)  in dcssblk_freeze()
972 		       dev_info->segment_name);  in dcssblk_freeze()
978 	struct dcssblk_dev_info *dev_info;  in dcssblk_restore()  local
983 	list_for_each_entry(dev_info, &dcssblk_devices, lh) {  in dcssblk_restore()
984 		list_for_each_entry(entry, &dev_info->seg_list, lh) {  in dcssblk_restore()