Lines Matching refs:tr
45 static blk_status_t do_blktrans_request(struct mtd_blktrans_ops *tr,
54 block = blk_rq_pos(req) << 9 >> tr->blkshift;
55 nsect = blk_rq_cur_bytes(req) >> tr->blkshift;
59 if (tr->flush(dev))
63 if (tr->discard(dev, block, nsect))
68 for (; nsect > 0; nsect--, block++, buf += tr->blksize) {
69 if (tr->readsect(dev, block, buf)) {
80 if (!tr->writesect)
87 for (; nsect > 0; nsect--, block++, buf += tr->blksize) {
88 if (tr->writesect(dev, block, buf)) {
124 struct mtd_blktrans_ops *tr = dev->tr;
133 if (tr->background && !background_done) {
136 tr->background(dev);
152 res = do_blktrans_request(dev->tr, dev, req);
197 __module_get(dev->tr->owner);
202 if (dev->tr->open) {
203 ret = dev->tr->open(dev);
219 if (dev->tr->release)
220 dev->tr->release(dev);
222 module_put(dev->tr->owner);
237 module_put(dev->tr->owner);
240 if (dev->tr->release)
241 dev->tr->release(dev);
259 ret = dev->tr->getgeo ? dev->tr->getgeo(dev, geo) : -ENOTTY;
278 struct mtd_blktrans_ops *tr = new->tr;
286 list_for_each_entry(d, &tr->devs, list) {
313 if (new->devnum > (MINORMASK >> tr->part_bits) ||
314 (tr->part_bits && new->devnum >= 27 * 26))
317 list_add_tail(&new->list, &tr->devs);
322 if (!tr->writesect)
345 gd->major = tr->major;
346 gd->first_minor = (new->devnum) << tr->part_bits;
347 gd->minors = 1 << tr->part_bits;
350 if (tr->part_bits) {
353 "%s%c", tr->name, 'a' + new->devnum);
356 "%s%c%c", tr->name,
361 "%s%d", tr->name, new->devnum);
365 set_capacity(gd, ((u64)new->size * tr->blksize) >> 9);
371 if (tr->flush)
374 blk_queue_logical_block_size(new->rq, tr->blksize);
379 if (tr->discard) {
381 new->rq->limits.discard_granularity = tr->blksize;
439 if (old->tr->release)
440 old->tr->release(old);
453 struct mtd_blktrans_ops *tr;
456 list_for_each_entry(tr, &blktrans_majors, list)
457 list_for_each_entry_safe(dev, next, &tr->devs, list)
459 tr->remove_dev(dev);
464 struct mtd_blktrans_ops *tr;
469 list_for_each_entry(tr, &blktrans_majors, list)
470 tr->add_mtd(tr, mtd);
478 int register_mtd_blktrans(struct mtd_blktrans_ops *tr)
489 ret = register_blkdev(tr->major, tr->name);
492 tr->name, tr->major, ret);
497 tr->major = ret;
499 tr->blkshift = ffs(tr->blksize) - 1;
501 INIT_LIST_HEAD(&tr->devs);
504 list_add(&tr->list, &blktrans_majors);
507 tr->add_mtd(tr, mtd);
512 int deregister_mtd_blktrans(struct mtd_blktrans_ops *tr)
519 list_del(&tr->list);
521 list_for_each_entry_safe(dev, next, &tr->devs, list)
522 tr->remove_dev(dev);
525 unregister_blkdev(tr->major, tr->name);
527 BUG_ON(!list_empty(&tr->devs));