Lines Matching refs:lo
89 static int transfer_xor(struct loop_device *lo, int cmd, in transfer_xor() argument
107 key = lo->lo_encrypt_key; in transfer_xor()
108 keysize = lo->lo_encrypt_key_size; in transfer_xor()
118 static int xor_init(struct loop_device *lo, const struct loop_info64 *info) in xor_init() argument
162 static loff_t get_loop_size(struct loop_device *lo, struct file *file) in get_loop_size() argument
164 return get_size(lo->lo_offset, lo->lo_sizelimit, file); in get_loop_size()
168 figure_loop_size(struct loop_device *lo, loff_t offset, loff_t sizelimit) in figure_loop_size() argument
170 loff_t size = get_size(offset, sizelimit, lo->lo_backing_file); in figure_loop_size()
172 struct block_device *bdev = lo->lo_device; in figure_loop_size()
176 if (lo->lo_offset != offset) in figure_loop_size()
177 lo->lo_offset = offset; in figure_loop_size()
178 if (lo->lo_sizelimit != sizelimit) in figure_loop_size()
179 lo->lo_sizelimit = sizelimit; in figure_loop_size()
180 set_capacity(lo->lo_disk, x); in figure_loop_size()
188 lo_do_transfer(struct loop_device *lo, int cmd, in lo_do_transfer() argument
195 ret = lo->transfer(lo, cmd, rpage, roffs, lpage, loffs, size, rblock); in lo_do_transfer()
227 static int lo_write_simple(struct loop_device *lo, struct request *rq, in lo_write_simple() argument
235 ret = lo_write_bvec(lo->lo_backing_file, &bvec, &pos); in lo_write_simple()
249 static int lo_write_transfer(struct loop_device *lo, struct request *rq, in lo_write_transfer() argument
262 ret = lo_do_transfer(lo, WRITE, page, 0, bvec.bv_page, in lo_write_transfer()
270 ret = lo_write_bvec(lo->lo_backing_file, &b, &pos); in lo_write_transfer()
279 static int lo_read_simple(struct loop_device *lo, struct request *rq, in lo_read_simple() argument
289 len = vfs_iter_read(lo->lo_backing_file, &i, &pos); in lo_read_simple()
308 static int lo_read_transfer(struct loop_device *lo, struct request *rq, in lo_read_transfer() argument
330 len = vfs_iter_read(lo->lo_backing_file, &i, &pos); in lo_read_transfer()
336 ret = lo_do_transfer(lo, READ, page, 0, bvec.bv_page, in lo_read_transfer()
358 static int lo_discard(struct loop_device *lo, struct request *rq, loff_t pos) in lo_discard() argument
366 struct file *file = lo->lo_backing_file; in lo_discard()
370 if ((!file->f_op->fallocate) || lo->lo_encrypt_key_size) { in lo_discard()
382 static int lo_req_flush(struct loop_device *lo, struct request *rq) in lo_req_flush() argument
384 struct file *file = lo->lo_backing_file; in lo_req_flush()
392 static int do_req_filebacked(struct loop_device *lo, struct request *rq) in do_req_filebacked() argument
397 pos = ((loff_t) blk_rq_pos(rq) << 9) + lo->lo_offset; in do_req_filebacked()
401 ret = lo_req_flush(lo, rq); in do_req_filebacked()
403 ret = lo_discard(lo, rq, pos); in do_req_filebacked()
404 else if (lo->transfer) in do_req_filebacked()
405 ret = lo_write_transfer(lo, rq, pos); in do_req_filebacked()
407 ret = lo_write_simple(lo, rq, pos); in do_req_filebacked()
410 if (lo->transfer) in do_req_filebacked()
411 ret = lo_read_transfer(lo, rq, pos); in do_req_filebacked()
413 ret = lo_read_simple(lo, rq, pos); in do_req_filebacked()
427 static void do_loop_switch(struct loop_device *lo, struct switch_request *p) in do_loop_switch() argument
430 struct file *old_file = lo->lo_backing_file; in do_loop_switch()
438 mapping_set_gfp_mask(old_file->f_mapping, lo->old_gfp_mask); in do_loop_switch()
439 lo->lo_backing_file = file; in do_loop_switch()
440 lo->lo_blocksize = S_ISBLK(mapping->host->i_mode) ? in do_loop_switch()
442 lo->old_gfp_mask = mapping_gfp_mask(mapping); in do_loop_switch()
443 mapping_set_gfp_mask(mapping, lo->old_gfp_mask & ~(__GFP_IO|__GFP_FS)); in do_loop_switch()
451 static int loop_switch(struct loop_device *lo, struct file *file) in loop_switch() argument
458 blk_mq_freeze_queue(lo->lo_queue); in loop_switch()
461 do_loop_switch(lo, &w); in loop_switch()
464 blk_mq_unfreeze_queue(lo->lo_queue); in loop_switch()
472 static int loop_flush(struct loop_device *lo) in loop_flush() argument
474 return loop_switch(lo, NULL); in loop_flush()
485 static int loop_change_fd(struct loop_device *lo, struct block_device *bdev, in loop_change_fd() argument
493 if (lo->lo_state != Lo_bound) in loop_change_fd()
498 if (!(lo->lo_flags & LO_FLAGS_READ_ONLY)) in loop_change_fd()
507 old_file = lo->lo_backing_file; in loop_change_fd()
515 if (get_loop_size(lo, file) != get_loop_size(lo, old_file)) in loop_change_fd()
519 error = loop_switch(lo, file); in loop_change_fd()
524 if (lo->lo_flags & LO_FLAGS_PARTSCAN) in loop_change_fd()
547 struct loop_device *lo = disk->private_data; in loop_attr_show() local
549 return callback(lo, page); in loop_attr_show()
562 static ssize_t loop_attr_backing_file_show(struct loop_device *lo, char *buf) in loop_attr_backing_file_show() argument
567 spin_lock_irq(&lo->lo_lock); in loop_attr_backing_file_show()
568 if (lo->lo_backing_file) in loop_attr_backing_file_show()
569 p = d_path(&lo->lo_backing_file->f_path, buf, PAGE_SIZE - 1); in loop_attr_backing_file_show()
570 spin_unlock_irq(&lo->lo_lock); in loop_attr_backing_file_show()
584 static ssize_t loop_attr_offset_show(struct loop_device *lo, char *buf) in loop_attr_offset_show() argument
586 return sprintf(buf, "%llu\n", (unsigned long long)lo->lo_offset); in loop_attr_offset_show()
589 static ssize_t loop_attr_sizelimit_show(struct loop_device *lo, char *buf) in loop_attr_sizelimit_show() argument
591 return sprintf(buf, "%llu\n", (unsigned long long)lo->lo_sizelimit); in loop_attr_sizelimit_show()
594 static ssize_t loop_attr_autoclear_show(struct loop_device *lo, char *buf) in loop_attr_autoclear_show() argument
596 int autoclear = (lo->lo_flags & LO_FLAGS_AUTOCLEAR); in loop_attr_autoclear_show()
601 static ssize_t loop_attr_partscan_show(struct loop_device *lo, char *buf) in loop_attr_partscan_show() argument
603 int partscan = (lo->lo_flags & LO_FLAGS_PARTSCAN); in loop_attr_partscan_show()
628 static int loop_sysfs_init(struct loop_device *lo) in loop_sysfs_init() argument
630 return sysfs_create_group(&disk_to_dev(lo->lo_disk)->kobj, in loop_sysfs_init()
634 static void loop_sysfs_exit(struct loop_device *lo) in loop_sysfs_exit() argument
636 sysfs_remove_group(&disk_to_dev(lo->lo_disk)->kobj, in loop_sysfs_exit()
640 static void loop_config_discard(struct loop_device *lo) in loop_config_discard() argument
642 struct file *file = lo->lo_backing_file; in loop_config_discard()
644 struct request_queue *q = lo->lo_queue; in loop_config_discard()
653 lo->lo_encrypt_key_size) { in loop_config_discard()
669 static int loop_set_fd(struct loop_device *lo, fmode_t mode, in loop_set_fd() argument
689 if (lo->lo_state != Lo_unbound) in loop_set_fd()
723 size = get_loop_size(lo, file); in loop_set_fd()
727 lo->wq = alloc_workqueue("kloopd%d", in loop_set_fd()
729 lo->lo_number); in loop_set_fd()
730 if (!lo->wq) in loop_set_fd()
737 lo->lo_blocksize = lo_blocksize; in loop_set_fd()
738 lo->lo_device = bdev; in loop_set_fd()
739 lo->lo_flags = lo_flags; in loop_set_fd()
740 lo->lo_backing_file = file; in loop_set_fd()
741 lo->transfer = NULL; in loop_set_fd()
742 lo->ioctl = NULL; in loop_set_fd()
743 lo->lo_sizelimit = 0; in loop_set_fd()
744 lo->old_gfp_mask = mapping_gfp_mask(mapping); in loop_set_fd()
745 mapping_set_gfp_mask(mapping, lo->old_gfp_mask & ~(__GFP_IO|__GFP_FS)); in loop_set_fd()
748 blk_queue_flush(lo->lo_queue, REQ_FLUSH); in loop_set_fd()
750 set_capacity(lo->lo_disk, size); in loop_set_fd()
752 loop_sysfs_init(lo); in loop_set_fd()
758 lo->lo_state = Lo_bound; in loop_set_fd()
760 lo->lo_flags |= LO_FLAGS_PARTSCAN; in loop_set_fd()
761 if (lo->lo_flags & LO_FLAGS_PARTSCAN) in loop_set_fd()
779 loop_release_xfer(struct loop_device *lo) in loop_release_xfer() argument
782 struct loop_func_table *xfer = lo->lo_encryption; in loop_release_xfer()
786 err = xfer->release(lo); in loop_release_xfer()
787 lo->transfer = NULL; in loop_release_xfer()
788 lo->lo_encryption = NULL; in loop_release_xfer()
795 loop_init_xfer(struct loop_device *lo, struct loop_func_table *xfer, in loop_init_xfer() argument
806 err = xfer->init(lo, i); in loop_init_xfer()
810 lo->lo_encryption = xfer; in loop_init_xfer()
815 static int loop_clr_fd(struct loop_device *lo) in loop_clr_fd() argument
817 struct file *filp = lo->lo_backing_file; in loop_clr_fd()
818 gfp_t gfp = lo->old_gfp_mask; in loop_clr_fd()
819 struct block_device *bdev = lo->lo_device; in loop_clr_fd()
821 if (lo->lo_state != Lo_bound) in loop_clr_fd()
834 if (lo->lo_refcnt > 1) { in loop_clr_fd()
835 lo->lo_flags |= LO_FLAGS_AUTOCLEAR; in loop_clr_fd()
836 mutex_unlock(&lo->lo_ctl_mutex); in loop_clr_fd()
843 spin_lock_irq(&lo->lo_lock); in loop_clr_fd()
844 lo->lo_state = Lo_rundown; in loop_clr_fd()
845 lo->lo_backing_file = NULL; in loop_clr_fd()
846 spin_unlock_irq(&lo->lo_lock); in loop_clr_fd()
848 loop_release_xfer(lo); in loop_clr_fd()
849 lo->transfer = NULL; in loop_clr_fd()
850 lo->ioctl = NULL; in loop_clr_fd()
851 lo->lo_device = NULL; in loop_clr_fd()
852 lo->lo_encryption = NULL; in loop_clr_fd()
853 lo->lo_offset = 0; in loop_clr_fd()
854 lo->lo_sizelimit = 0; in loop_clr_fd()
855 lo->lo_encrypt_key_size = 0; in loop_clr_fd()
856 memset(lo->lo_encrypt_key, 0, LO_KEY_SIZE); in loop_clr_fd()
857 memset(lo->lo_crypt_name, 0, LO_NAME_SIZE); in loop_clr_fd()
858 memset(lo->lo_file_name, 0, LO_NAME_SIZE); in loop_clr_fd()
863 set_capacity(lo->lo_disk, 0); in loop_clr_fd()
864 loop_sysfs_exit(lo); in loop_clr_fd()
871 lo->lo_state = Lo_unbound; in loop_clr_fd()
874 if (lo->lo_flags & LO_FLAGS_PARTSCAN && bdev) in loop_clr_fd()
876 lo->lo_flags = 0; in loop_clr_fd()
878 lo->lo_disk->flags |= GENHD_FL_NO_PART_SCAN; in loop_clr_fd()
879 destroy_workqueue(lo->wq); in loop_clr_fd()
880 lo->wq = NULL; in loop_clr_fd()
881 mutex_unlock(&lo->lo_ctl_mutex); in loop_clr_fd()
893 loop_set_status(struct loop_device *lo, const struct loop_info64 *info) in loop_set_status() argument
899 if (lo->lo_encrypt_key_size && in loop_set_status()
900 !uid_eq(lo->lo_key_owner, uid) && in loop_set_status()
903 if (lo->lo_state != Lo_bound) in loop_set_status()
908 err = loop_release_xfer(lo); in loop_set_status()
923 err = loop_init_xfer(lo, xfer, info); in loop_set_status()
927 if (lo->lo_offset != info->lo_offset || in loop_set_status()
928 lo->lo_sizelimit != info->lo_sizelimit) in loop_set_status()
929 if (figure_loop_size(lo, info->lo_offset, info->lo_sizelimit)) in loop_set_status()
932 loop_config_discard(lo); in loop_set_status()
934 memcpy(lo->lo_file_name, info->lo_file_name, LO_NAME_SIZE); in loop_set_status()
935 memcpy(lo->lo_crypt_name, info->lo_crypt_name, LO_NAME_SIZE); in loop_set_status()
936 lo->lo_file_name[LO_NAME_SIZE-1] = 0; in loop_set_status()
937 lo->lo_crypt_name[LO_NAME_SIZE-1] = 0; in loop_set_status()
941 lo->transfer = xfer->transfer; in loop_set_status()
942 lo->ioctl = xfer->ioctl; in loop_set_status()
944 if ((lo->lo_flags & LO_FLAGS_AUTOCLEAR) != in loop_set_status()
946 lo->lo_flags ^= LO_FLAGS_AUTOCLEAR; in loop_set_status()
949 !(lo->lo_flags & LO_FLAGS_PARTSCAN)) { in loop_set_status()
950 lo->lo_flags |= LO_FLAGS_PARTSCAN; in loop_set_status()
951 lo->lo_disk->flags &= ~GENHD_FL_NO_PART_SCAN; in loop_set_status()
952 ioctl_by_bdev(lo->lo_device, BLKRRPART, 0); in loop_set_status()
955 lo->lo_encrypt_key_size = info->lo_encrypt_key_size; in loop_set_status()
956 lo->lo_init[0] = info->lo_init[0]; in loop_set_status()
957 lo->lo_init[1] = info->lo_init[1]; in loop_set_status()
959 memcpy(lo->lo_encrypt_key, info->lo_encrypt_key, in loop_set_status()
961 lo->lo_key_owner = uid; in loop_set_status()
968 loop_get_status(struct loop_device *lo, struct loop_info64 *info) in loop_get_status() argument
970 struct file *file = lo->lo_backing_file; in loop_get_status()
974 if (lo->lo_state != Lo_bound) in loop_get_status()
980 info->lo_number = lo->lo_number; in loop_get_status()
983 info->lo_rdevice = huge_encode_dev(lo->lo_device ? stat.rdev : stat.dev); in loop_get_status()
984 info->lo_offset = lo->lo_offset; in loop_get_status()
985 info->lo_sizelimit = lo->lo_sizelimit; in loop_get_status()
986 info->lo_flags = lo->lo_flags; in loop_get_status()
987 memcpy(info->lo_file_name, lo->lo_file_name, LO_NAME_SIZE); in loop_get_status()
988 memcpy(info->lo_crypt_name, lo->lo_crypt_name, LO_NAME_SIZE); in loop_get_status()
990 lo->lo_encryption ? lo->lo_encryption->number : 0; in loop_get_status()
991 if (lo->lo_encrypt_key_size && capable(CAP_SYS_ADMIN)) { in loop_get_status()
992 info->lo_encrypt_key_size = lo->lo_encrypt_key_size; in loop_get_status()
993 memcpy(info->lo_encrypt_key, lo->lo_encrypt_key, in loop_get_status()
994 lo->lo_encrypt_key_size); in loop_get_status()
1052 loop_set_status_old(struct loop_device *lo, const struct loop_info __user *arg) in loop_set_status_old() argument
1060 return loop_set_status(lo, &info64); in loop_set_status_old()
1064 loop_set_status64(struct loop_device *lo, const struct loop_info64 __user *arg) in loop_set_status64() argument
1070 return loop_set_status(lo, &info64); in loop_set_status64()
1074 loop_get_status_old(struct loop_device *lo, struct loop_info __user *arg) { in loop_get_status_old() argument
1082 err = loop_get_status(lo, &info64); in loop_get_status_old()
1092 loop_get_status64(struct loop_device *lo, struct loop_info64 __user *arg) { in loop_get_status64() argument
1099 err = loop_get_status(lo, &info64); in loop_get_status64()
1106 static int loop_set_capacity(struct loop_device *lo, struct block_device *bdev) in loop_set_capacity() argument
1108 if (unlikely(lo->lo_state != Lo_bound)) in loop_set_capacity()
1111 return figure_loop_size(lo, lo->lo_offset, lo->lo_sizelimit); in loop_set_capacity()
1117 struct loop_device *lo = bdev->bd_disk->private_data; in lo_ioctl() local
1120 mutex_lock_nested(&lo->lo_ctl_mutex, 1); in lo_ioctl()
1123 err = loop_set_fd(lo, mode, bdev, arg); in lo_ioctl()
1126 err = loop_change_fd(lo, bdev, arg); in lo_ioctl()
1130 err = loop_clr_fd(lo); in lo_ioctl()
1137 err = loop_set_status_old(lo, in lo_ioctl()
1141 err = loop_get_status_old(lo, (struct loop_info __user *) arg); in lo_ioctl()
1146 err = loop_set_status64(lo, in lo_ioctl()
1150 err = loop_get_status64(lo, (struct loop_info64 __user *) arg); in lo_ioctl()
1155 err = loop_set_capacity(lo, bdev); in lo_ioctl()
1158 err = lo->ioctl ? lo->ioctl(lo, cmd, arg) : -EINVAL; in lo_ioctl()
1160 mutex_unlock(&lo->lo_ctl_mutex); in lo_ioctl()
1257 loop_set_status_compat(struct loop_device *lo, in loop_set_status_compat() argument
1266 return loop_set_status(lo, &info64); in loop_set_status_compat()
1270 loop_get_status_compat(struct loop_device *lo, in loop_get_status_compat() argument
1279 err = loop_get_status(lo, &info64); in loop_get_status_compat()
1288 struct loop_device *lo = bdev->bd_disk->private_data; in lo_compat_ioctl() local
1293 mutex_lock(&lo->lo_ctl_mutex); in lo_compat_ioctl()
1295 lo, (const struct compat_loop_info __user *) arg); in lo_compat_ioctl()
1296 mutex_unlock(&lo->lo_ctl_mutex); in lo_compat_ioctl()
1299 mutex_lock(&lo->lo_ctl_mutex); in lo_compat_ioctl()
1301 lo, (struct compat_loop_info __user *) arg); in lo_compat_ioctl()
1302 mutex_unlock(&lo->lo_ctl_mutex); in lo_compat_ioctl()
1323 struct loop_device *lo; in lo_open() local
1327 lo = bdev->bd_disk->private_data; in lo_open()
1328 if (!lo) { in lo_open()
1333 mutex_lock(&lo->lo_ctl_mutex); in lo_open()
1334 lo->lo_refcnt++; in lo_open()
1335 mutex_unlock(&lo->lo_ctl_mutex); in lo_open()
1343 struct loop_device *lo = disk->private_data; in lo_release() local
1346 mutex_lock(&lo->lo_ctl_mutex); in lo_release()
1348 if (--lo->lo_refcnt) in lo_release()
1351 if (lo->lo_flags & LO_FLAGS_AUTOCLEAR) { in lo_release()
1356 err = loop_clr_fd(lo); in lo_release()
1364 loop_flush(lo); in lo_release()
1368 mutex_unlock(&lo->lo_ctl_mutex); in lo_release()
1404 struct loop_device *lo = ptr; in unregister_transfer_cb() local
1407 mutex_lock(&lo->lo_ctl_mutex); in unregister_transfer_cb()
1408 if (lo->lo_encryption == xfer) in unregister_transfer_cb()
1409 loop_release_xfer(lo); in unregister_transfer_cb()
1410 mutex_unlock(&lo->lo_ctl_mutex); in unregister_transfer_cb()
1434 struct loop_device *lo = cmd->rq->q->queuedata; in loop_queue_rq() local
1438 if (lo->lo_state != Lo_bound) in loop_queue_rq()
1442 struct loop_device *lo = cmd->rq->q->queuedata; in loop_queue_rq() local
1445 spin_lock_irq(&lo->lo_lock); in loop_queue_rq()
1446 if (lo->write_started) in loop_queue_rq()
1449 lo->write_started = true; in loop_queue_rq()
1450 list_add_tail(&cmd->list, &lo->write_cmd_head); in loop_queue_rq()
1451 spin_unlock_irq(&lo->lo_lock); in loop_queue_rq()
1454 queue_work(lo->wq, &lo->write_work); in loop_queue_rq()
1456 queue_work(lo->wq, &cmd->read_work); in loop_queue_rq()
1465 struct loop_device *lo = cmd->rq->q->queuedata; in loop_handle_cmd() local
1468 if (write && (lo->lo_flags & LO_FLAGS_READ_ONLY)) in loop_handle_cmd()
1471 ret = do_req_filebacked(lo, cmd->rq); in loop_handle_cmd()
1481 struct loop_device *lo = in loop_queue_write_work() local
1485 spin_lock_irq(&lo->lo_lock); in loop_queue_write_work()
1487 list_splice_init(&lo->write_cmd_head, &cmd_list); in loop_queue_write_work()
1488 spin_unlock_irq(&lo->lo_lock); in loop_queue_write_work()
1497 spin_lock_irq(&lo->lo_lock); in loop_queue_write_work()
1498 if (!list_empty(&lo->write_cmd_head)) in loop_queue_write_work()
1500 lo->write_started = false; in loop_queue_write_work()
1501 spin_unlock_irq(&lo->lo_lock); in loop_queue_write_work()
1532 struct loop_device *lo; in loop_add() local
1537 lo = kzalloc(sizeof(*lo), GFP_KERNEL); in loop_add()
1538 if (!lo) in loop_add()
1541 lo->lo_state = Lo_unbound; in loop_add()
1545 err = idr_alloc(&loop_index_idr, lo, i, i + 1, GFP_KERNEL); in loop_add()
1549 err = idr_alloc(&loop_index_idr, lo, 0, 0, GFP_KERNEL); in loop_add()
1556 lo->tag_set.ops = &loop_mq_ops; in loop_add()
1557 lo->tag_set.nr_hw_queues = 1; in loop_add()
1558 lo->tag_set.queue_depth = 128; in loop_add()
1559 lo->tag_set.numa_node = NUMA_NO_NODE; in loop_add()
1560 lo->tag_set.cmd_size = sizeof(struct loop_cmd); in loop_add()
1561 lo->tag_set.flags = BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_SG_MERGE; in loop_add()
1562 lo->tag_set.driver_data = lo; in loop_add()
1564 err = blk_mq_alloc_tag_set(&lo->tag_set); in loop_add()
1568 lo->lo_queue = blk_mq_init_queue(&lo->tag_set); in loop_add()
1569 if (IS_ERR_OR_NULL(lo->lo_queue)) { in loop_add()
1570 err = PTR_ERR(lo->lo_queue); in loop_add()
1573 lo->lo_queue->queuedata = lo; in loop_add()
1575 INIT_LIST_HEAD(&lo->write_cmd_head); in loop_add()
1576 INIT_WORK(&lo->write_work, loop_queue_write_work); in loop_add()
1578 disk = lo->lo_disk = alloc_disk(1 << part_shift); in loop_add()
1603 mutex_init(&lo->lo_ctl_mutex); in loop_add()
1604 lo->lo_number = i; in loop_add()
1605 spin_lock_init(&lo->lo_lock); in loop_add()
1609 disk->private_data = lo; in loop_add()
1610 disk->queue = lo->lo_queue; in loop_add()
1613 *l = lo; in loop_add()
1614 return lo->lo_number; in loop_add()
1617 blk_cleanup_queue(lo->lo_queue); in loop_add()
1619 blk_mq_free_tag_set(&lo->tag_set); in loop_add()
1623 kfree(lo); in loop_add()
1628 static void loop_remove(struct loop_device *lo) in loop_remove() argument
1630 blk_cleanup_queue(lo->lo_queue); in loop_remove()
1631 del_gendisk(lo->lo_disk); in loop_remove()
1632 blk_mq_free_tag_set(&lo->tag_set); in loop_remove()
1633 put_disk(lo->lo_disk); in loop_remove()
1634 kfree(lo); in loop_remove()
1639 struct loop_device *lo = ptr; in find_free_cb() local
1642 if (lo->lo_state == Lo_unbound) { in find_free_cb()
1643 *l = lo; in find_free_cb()
1651 struct loop_device *lo; in loop_lookup() local
1657 err = idr_for_each(&loop_index_idr, &find_free_cb, &lo); in loop_lookup()
1659 *l = lo; in loop_lookup()
1660 ret = lo->lo_number; in loop_lookup()
1666 lo = idr_find(&loop_index_idr, i); in loop_lookup()
1667 if (lo) { in loop_lookup()
1668 *l = lo; in loop_lookup()
1669 ret = lo->lo_number; in loop_lookup()
1677 struct loop_device *lo; in loop_probe() local
1682 err = loop_lookup(&lo, MINOR(dev) >> part_shift); in loop_probe()
1684 err = loop_add(&lo, MINOR(dev) >> part_shift); in loop_probe()
1688 kobj = get_disk(lo->lo_disk); in loop_probe()
1698 struct loop_device *lo; in loop_control_ioctl() local
1704 ret = loop_lookup(&lo, parm); in loop_control_ioctl()
1709 ret = loop_add(&lo, parm); in loop_control_ioctl()
1712 ret = loop_lookup(&lo, parm); in loop_control_ioctl()
1715 mutex_lock(&lo->lo_ctl_mutex); in loop_control_ioctl()
1716 if (lo->lo_state != Lo_unbound) { in loop_control_ioctl()
1718 mutex_unlock(&lo->lo_ctl_mutex); in loop_control_ioctl()
1721 if (lo->lo_refcnt > 0) { in loop_control_ioctl()
1723 mutex_unlock(&lo->lo_ctl_mutex); in loop_control_ioctl()
1726 lo->lo_disk->private_data = NULL; in loop_control_ioctl()
1727 mutex_unlock(&lo->lo_ctl_mutex); in loop_control_ioctl()
1728 idr_remove(&loop_index_idr, lo->lo_number); in loop_control_ioctl()
1729 loop_remove(lo); in loop_control_ioctl()
1732 ret = loop_lookup(&lo, -1); in loop_control_ioctl()
1735 ret = loop_add(&lo, -1); in loop_control_ioctl()
1763 struct loop_device *lo; in loop_init() local
1822 loop_add(&lo, i); in loop_init()
1835 struct loop_device *lo = ptr; in loop_exit_cb() local
1837 loop_remove(lo); in loop_exit_cb()