65 static blk_status_t do_blktrans_request(struct mtd_blktrans_ops *tr,  in do_blktrans_request()  argument
72 	block = blk_rq_pos(req) << 9 >> tr->blkshift;  in do_blktrans_request()
73 	nsect = blk_rq_cur_bytes(req) >> tr->blkshift;  in do_blktrans_request()
76 		if (tr->flush(dev))  in do_blktrans_request()
87 		if (tr->discard(dev, block, nsect))  in do_blktrans_request()
92 		for (; nsect > 0; nsect--, block++, buf += tr->blksize) {  in do_blktrans_request()
93 			if (tr->readsect(dev, block, buf)) {  in do_blktrans_request()
102 		if (!tr->writesect)  in do_blktrans_request()
107 		for (; nsect > 0; nsect--, block++, buf += tr->blksize) {  in do_blktrans_request()
108 			if (tr->writesect(dev, block, buf)) {  in do_blktrans_request()
144 	struct mtd_blktrans_ops *tr = dev->tr;  in mtd_blktrans_work()  local
153 			if (tr->background && !background_done) {  in mtd_blktrans_work()
156 				tr->background(dev);  in mtd_blktrans_work()
172 		res = do_blktrans_request(dev->tr, dev, req);  in mtd_blktrans_work()
219 	__module_get(dev->tr->owner);  in blktrans_open()
224 	if (dev->tr->open) {  in blktrans_open()
225 		ret = dev->tr->open(dev);  in blktrans_open()
243 	if (dev->tr->release)  in blktrans_open()
244 		dev->tr->release(dev);  in blktrans_open()
246 	module_put(dev->tr->owner);  in blktrans_open()
268 	module_put(dev->tr->owner);  in blktrans_release()
271 		if (dev->tr->release)  in blktrans_release()
272 			dev->tr->release(dev);  in blktrans_release()
294 	ret = dev->tr->getgeo ? dev->tr->getgeo(dev, geo) : -ENOTTY;  in blktrans_getgeo()
317 		ret = dev->tr->flush ? dev->tr->flush(dev) : 0;  in blktrans_ioctl()
342 	struct mtd_blktrans_ops *tr = new->tr;  in add_mtd_blktrans_dev()  local
354 	list_for_each_entry(d, &tr->devs, list) {  in add_mtd_blktrans_dev()
382 	if (new->devnum > (MINORMASK >> tr->part_bits) ||  in add_mtd_blktrans_dev()
383 	    (tr->part_bits && new->devnum >= 27 * 26)) {  in add_mtd_blktrans_dev()
388 	list_add_tail(&new->list, &tr->devs);  in add_mtd_blktrans_dev()
394 	if (!tr->writesect)  in add_mtd_blktrans_dev()
399 	gd = alloc_disk(1 << tr->part_bits);  in add_mtd_blktrans_dev()
406 	gd->major = tr->major;  in add_mtd_blktrans_dev()
407 	gd->first_minor = (new->devnum) << tr->part_bits;  in add_mtd_blktrans_dev()
410 	if (tr->part_bits)  in add_mtd_blktrans_dev()
413 				 "%s%c", tr->name, 'a' + new->devnum);  in add_mtd_blktrans_dev()
416 				 "%s%c%c", tr->name,  in add_mtd_blktrans_dev()
421 			 "%s%d", tr->name, new->devnum);  in add_mtd_blktrans_dev()
423 	set_capacity(gd, ((u64)new->size * tr->blksize) >> 9);  in add_mtd_blktrans_dev()
441 	if (tr->flush)  in add_mtd_blktrans_dev()
445 	blk_queue_logical_block_size(new->rq, tr->blksize);  in add_mtd_blktrans_dev()
450 	if (tr->discard) {  in add_mtd_blktrans_dev()
509 		if (old->tr->release)  in del_mtd_blktrans_dev()
510 			old->tr->release(old);  in del_mtd_blktrans_dev()
523 	struct mtd_blktrans_ops *tr;  in blktrans_notify_remove()  local
526 	list_for_each_entry(tr, &blktrans_majors, list)  in blktrans_notify_remove()
527 		list_for_each_entry_safe(dev, next, &tr->devs, list)  in blktrans_notify_remove()
529 				tr->remove_dev(dev);  in blktrans_notify_remove()
534 	struct mtd_blktrans_ops *tr;  in blktrans_notify_add()  local
539 	list_for_each_entry(tr, &blktrans_majors, list)  in blktrans_notify_add()
540 		tr->add_mtd(tr, mtd);  in blktrans_notify_add()
548 int register_mtd_blktrans(struct mtd_blktrans_ops *tr)  in register_mtd_blktrans()  argument
562 	ret = register_blkdev(tr->major, tr->name);  in register_mtd_blktrans()
565 		       tr->name, tr->major, ret);  in register_mtd_blktrans()
571 		tr->major = ret;  in register_mtd_blktrans()
573 	tr->blkshift = ffs(tr->blksize) - 1;  in register_mtd_blktrans()
575 	INIT_LIST_HEAD(&tr->devs);  in register_mtd_blktrans()
576 	list_add(&tr->list, &blktrans_majors);  in register_mtd_blktrans()
580 			tr->add_mtd(tr, mtd);  in register_mtd_blktrans()
586 int deregister_mtd_blktrans(struct mtd_blktrans_ops *tr)  in deregister_mtd_blktrans()  argument
593 	list_del(&tr->list);  in deregister_mtd_blktrans()
595 	list_for_each_entry_safe(dev, next, &tr->devs, list)  in deregister_mtd_blktrans()
596 		tr->remove_dev(dev);  in deregister_mtd_blktrans()
598 	unregister_blkdev(tr->major, tr->name);  in deregister_mtd_blktrans()
601 	BUG_ON(!list_empty(&tr->devs));  in deregister_mtd_blktrans()