76 static blk_status_t do_blktrans_request(struct mtd_blktrans_ops *tr,  in do_blktrans_request()  argument
83 	block = blk_rq_pos(req) << 9 >> tr->blkshift;  in do_blktrans_request()
84 	nsect = blk_rq_cur_bytes(req) >> tr->blkshift;  in do_blktrans_request()
87 		if (tr->flush(dev))  in do_blktrans_request()
98 		if (tr->discard(dev, block, nsect))  in do_blktrans_request()
103 		for (; nsect > 0; nsect--, block++, buf += tr->blksize) {  in do_blktrans_request()
104 			if (tr->readsect(dev, block, buf)) {  in do_blktrans_request()
113 		if (!tr->writesect)  in do_blktrans_request()
118 		for (; nsect > 0; nsect--, block++, buf += tr->blksize) {  in do_blktrans_request()
119 			if (tr->writesect(dev, block, buf)) {  in do_blktrans_request()
141 	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()
215 	__module_get(dev->tr->owner);  in blktrans_open()
220 	if (dev->tr->open) {  in blktrans_open()
221 		ret = dev->tr->open(dev);  in blktrans_open()
239 	if (dev->tr->release)  in blktrans_open()
240 		dev->tr->release(dev);  in blktrans_open()
242 	module_put(dev->tr->owner);  in blktrans_open()
264 	module_put(dev->tr->owner);  in blktrans_release()
267 		if (dev->tr->release)  in blktrans_release()
268 			dev->tr->release(dev);  in blktrans_release()
290 	ret = dev->tr->getgeo ? dev->tr->getgeo(dev, geo) : -ENOTTY;  in blktrans_getgeo()
313 		ret = dev->tr->flush ? dev->tr->flush(dev) : 0;  in blktrans_ioctl()
334 	struct mtd_blktrans_ops *tr = new->tr;  in add_mtd_blktrans_dev()  local
346 	list_for_each_entry(d, &tr->devs, list) {  in add_mtd_blktrans_dev()
374 	if (new->devnum > (MINORMASK >> tr->part_bits) ||  in add_mtd_blktrans_dev()
375 	    (tr->part_bits && new->devnum >= 27 * 26)) {  in add_mtd_blktrans_dev()
380 	list_add_tail(&new->list, &tr->devs);  in add_mtd_blktrans_dev()
386 	if (!tr->writesect)  in add_mtd_blktrans_dev()
391 	gd = alloc_disk(1 << tr->part_bits);  in add_mtd_blktrans_dev()
398 	gd->major = tr->major;  in add_mtd_blktrans_dev()
399 	gd->first_minor = (new->devnum) << tr->part_bits;  in add_mtd_blktrans_dev()
402 	if (tr->part_bits)  in add_mtd_blktrans_dev()
405 				 "%s%c", tr->name, 'a' + new->devnum);  in add_mtd_blktrans_dev()
408 				 "%s%c%c", tr->name,  in add_mtd_blktrans_dev()
413 			 "%s%d", tr->name, new->devnum);  in add_mtd_blktrans_dev()
415 	set_capacity(gd, ((u64)new->size * tr->blksize) >> 9);  in add_mtd_blktrans_dev()
424 	if (tr->flush)  in add_mtd_blktrans_dev()
428 	blk_queue_logical_block_size(new->rq, tr->blksize);  in add_mtd_blktrans_dev()
433 	if (tr->discard) {  in add_mtd_blktrans_dev()
442 				  tr->name, new->mtd->index);  in add_mtd_blktrans_dev()
497 		if (old->tr->release)  in del_mtd_blktrans_dev()
498 			old->tr->release(old);  in del_mtd_blktrans_dev()
511 	struct mtd_blktrans_ops *tr;  in blktrans_notify_remove()  local
514 	list_for_each_entry(tr, &blktrans_majors, list)  in blktrans_notify_remove()
515 		list_for_each_entry_safe(dev, next, &tr->devs, list)  in blktrans_notify_remove()
517 				tr->remove_dev(dev);  in blktrans_notify_remove()
522 	struct mtd_blktrans_ops *tr;  in blktrans_notify_add()  local
527 	list_for_each_entry(tr, &blktrans_majors, list)  in blktrans_notify_add()
528 		tr->add_mtd(tr, mtd);  in blktrans_notify_add()
536 int register_mtd_blktrans(struct mtd_blktrans_ops *tr)  in register_mtd_blktrans()  argument
550 	ret = register_blkdev(tr->major, tr->name);  in register_mtd_blktrans()
553 		       tr->name, tr->major, ret);  in register_mtd_blktrans()
559 		tr->major = ret;  in register_mtd_blktrans()
561 	tr->blkshift = ffs(tr->blksize) - 1;  in register_mtd_blktrans()
563 	INIT_LIST_HEAD(&tr->devs);  in register_mtd_blktrans()
564 	list_add(&tr->list, &blktrans_majors);  in register_mtd_blktrans()
568 			tr->add_mtd(tr, mtd);  in register_mtd_blktrans()
574 int deregister_mtd_blktrans(struct mtd_blktrans_ops *tr)  in deregister_mtd_blktrans()  argument
581 	list_del(&tr->list);  in deregister_mtd_blktrans()
583 	list_for_each_entry_safe(dev, next, &tr->devs, list)  in deregister_mtd_blktrans()
584 		tr->remove_dev(dev);  in deregister_mtd_blktrans()
586 	unregister_blkdev(tr->major, tr->name);  in deregister_mtd_blktrans()
589 	BUG_ON(!list_empty(&tr->devs));  in deregister_mtd_blktrans()