16 static int blkpg_do_ioctl(struct block_device *bdev,  in blkpg_do_ioctl()  argument
26 	if (bdev_is_partition(bdev))  in blkpg_do_ioctl()
33 		return bdev_del_partition(bdev, p.pno);  in blkpg_do_ioctl()
50 		if (p.start & (bdev_logical_block_size(bdev) - 1))  in blkpg_do_ioctl()
52 		return bdev_add_partition(bdev, p.pno, start, length);  in blkpg_do_ioctl()
54 		return bdev_resize_partition(bdev, p.pno, start, length);  in blkpg_do_ioctl()
60 static int blkpg_ioctl(struct block_device *bdev,  in blkpg_ioctl()  argument
69 	return blkpg_do_ioctl(bdev, udata, op);  in blkpg_ioctl()
80 static int compat_blkpg_ioctl(struct block_device *bdev,  in compat_blkpg_ioctl()  argument
89 	return blkpg_do_ioctl(bdev, compat_ptr(udata), op);  in compat_blkpg_ioctl()
93 static int blkdev_reread_part(struct block_device *bdev, fmode_t mode)  in blkdev_reread_part()  argument
97 	if (!disk_part_scan_enabled(bdev->bd_disk) || bdev_is_partition(bdev))  in blkdev_reread_part()
101 	if (bdev->bd_part_count)  in blkdev_reread_part()
109 	set_bit(GD_NEED_PART_SCAN, &bdev->bd_disk->state);  in blkdev_reread_part()
111 	tmp = blkdev_get_by_dev(bdev->bd_dev, mode, NULL);  in blkdev_reread_part()
118 static int blk_ioctl_discard(struct block_device *bdev, fmode_t mode,  in blk_ioctl_discard()  argument
123 	struct request_queue *q = bdev_get_queue(bdev);  in blk_ioctl_discard()
143 	if (start + len > i_size_read(bdev->bd_inode))  in blk_ioctl_discard()
146 	err = truncate_bdev_range(bdev, mode, start, start + len - 1);  in blk_ioctl_discard()
150 	return blkdev_issue_discard(bdev, start >> 9, len >> 9,  in blk_ioctl_discard()
154 static int blk_ioctl_zeroout(struct block_device *bdev, fmode_t mode,  in blk_ioctl_zeroout()  argument
175 	if (end >= (uint64_t)i_size_read(bdev->bd_inode))  in blk_ioctl_zeroout()
181 	err = truncate_bdev_range(bdev, mode, start, end);  in blk_ioctl_zeroout()
185 	return blkdev_issue_zeroout(bdev, start >> 9, len >> 9, GFP_KERNEL,  in blk_ioctl_zeroout()
231 int __blkdev_driver_ioctl(struct block_device *bdev, fmode_t mode,  in __blkdev_driver_ioctl()  argument
234 	struct gendisk *disk = bdev->bd_disk;  in __blkdev_driver_ioctl()
237 		return disk->fops->ioctl(bdev, mode, cmd, arg);  in __blkdev_driver_ioctl()
254 int blkdev_compat_ptr_ioctl(struct block_device *bdev, fmode_t mode,  in blkdev_compat_ptr_ioctl()  argument
257 	struct gendisk *disk = bdev->bd_disk;  in blkdev_compat_ptr_ioctl()
260 		return disk->fops->ioctl(bdev, mode, cmd,  in blkdev_compat_ptr_ioctl()
268 static int blkdev_pr_register(struct block_device *bdev,  in blkdev_pr_register()  argument
271 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_register()
283 	return ops->pr_register(bdev, reg.old_key, reg.new_key, reg.flags);  in blkdev_pr_register()
286 static int blkdev_pr_reserve(struct block_device *bdev,  in blkdev_pr_reserve()  argument
289 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_reserve()
301 	return ops->pr_reserve(bdev, rsv.key, rsv.type, rsv.flags);  in blkdev_pr_reserve()
304 static int blkdev_pr_release(struct block_device *bdev,  in blkdev_pr_release()  argument
307 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_release()
319 	return ops->pr_release(bdev, rsv.key, rsv.type);  in blkdev_pr_release()
322 static int blkdev_pr_preempt(struct block_device *bdev,  in blkdev_pr_preempt()  argument
325 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_preempt()
337 	return ops->pr_preempt(bdev, p.old_key, p.new_key, p.type, abort);  in blkdev_pr_preempt()
340 static int blkdev_pr_clear(struct block_device *bdev,  in blkdev_pr_clear()  argument
343 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_clear()
355 	return ops->pr_clear(bdev, c.key);  in blkdev_pr_clear()
378 static int blkdev_flushbuf(struct block_device *bdev, fmode_t mode,  in blkdev_flushbuf()  argument
386 	ret = __blkdev_driver_ioctl(bdev, mode, cmd, arg);  in blkdev_flushbuf()
390 	fsync_bdev(bdev);  in blkdev_flushbuf()
391 	invalidate_bdev(bdev);  in blkdev_flushbuf()
395 static int blkdev_roset(struct block_device *bdev, fmode_t mode,  in blkdev_roset()  argument
403 	ret = __blkdev_driver_ioctl(bdev, mode, cmd, arg);  in blkdev_roset()
408 	set_device_ro(bdev, n);  in blkdev_roset()
412 static int blkdev_getgeo(struct block_device *bdev,  in blkdev_getgeo()  argument
415 	struct gendisk *disk = bdev->bd_disk;  in blkdev_getgeo()
429 	geo.start = get_start_sect(bdev);  in blkdev_getgeo()
430 	ret = disk->fops->getgeo(bdev, &geo);  in blkdev_getgeo()
446 static int compat_hdio_getgeo(struct block_device *bdev,  in compat_hdio_getgeo()  argument
449 	struct gendisk *disk = bdev->bd_disk;  in compat_hdio_getgeo()
463 	geo.start = get_start_sect(bdev);  in compat_hdio_getgeo()
464 	ret = disk->fops->getgeo(bdev, &geo);  in compat_hdio_getgeo()
478 static int blkdev_bszset(struct block_device *bdev, fmode_t mode,  in blkdev_bszset()  argument
491 		return set_blocksize(bdev, n);  in blkdev_bszset()
493 	if (IS_ERR(blkdev_get_by_dev(bdev->bd_dev, mode | FMODE_EXCL, &bdev)))  in blkdev_bszset()
495 	ret = set_blocksize(bdev, n);  in blkdev_bszset()
496 	blkdev_put(bdev, mode | FMODE_EXCL);  in blkdev_bszset()
506 static int blkdev_common_ioctl(struct block_device *bdev, fmode_t mode,  in blkdev_common_ioctl()  argument
513 		return blkdev_flushbuf(bdev, mode, cmd, arg);  in blkdev_common_ioctl()
515 		return blkdev_roset(bdev, mode, cmd, arg);  in blkdev_common_ioctl()
517 		return blk_ioctl_discard(bdev, mode, arg, 0);  in blkdev_common_ioctl()
519 		return blk_ioctl_discard(bdev, mode, arg,  in blkdev_common_ioctl()
522 		return blk_ioctl_zeroout(bdev, mode, arg);  in blkdev_common_ioctl()
524 		return blkdev_report_zones_ioctl(bdev, mode, cmd, arg);  in blkdev_common_ioctl()
529 		return blkdev_zone_mgmt_ioctl(bdev, mode, cmd, arg);  in blkdev_common_ioctl()
531 		return put_uint(argp, bdev_zone_sectors(bdev));  in blkdev_common_ioctl()
533 		return put_uint(argp, blkdev_nr_zones(bdev->bd_disk));  in blkdev_common_ioctl()
535 		return put_int(argp, bdev_read_only(bdev) != 0);  in blkdev_common_ioctl()
537 		return put_int(argp, bdev_logical_block_size(bdev));  in blkdev_common_ioctl()
539 		return put_uint(argp, bdev_physical_block_size(bdev));  in blkdev_common_ioctl()
541 		return put_uint(argp, bdev_io_min(bdev));  in blkdev_common_ioctl()
543 		return put_uint(argp, bdev_io_opt(bdev));  in blkdev_common_ioctl()
545 		return put_int(argp, bdev_alignment_offset(bdev));  in blkdev_common_ioctl()
550 				    queue_max_sectors(bdev_get_queue(bdev)));  in blkdev_common_ioctl()
553 		return put_ushort(argp, !blk_queue_nonrot(bdev_get_queue(bdev)));  in blkdev_common_ioctl()
558 		bdev->bd_bdi->ra_pages = (arg * 512) / PAGE_SIZE;  in blkdev_common_ioctl()
561 		return blkdev_reread_part(bdev, mode);  in blkdev_common_ioctl()
565 		return blk_trace_ioctl(bdev, cmd, argp);  in blkdev_common_ioctl()
567 		return blkdev_pr_register(bdev, argp);  in blkdev_common_ioctl()
569 		return blkdev_pr_reserve(bdev, argp);  in blkdev_common_ioctl()
571 		return blkdev_pr_release(bdev, argp);  in blkdev_common_ioctl()
573 		return blkdev_pr_preempt(bdev, argp, false);  in blkdev_common_ioctl()
575 		return blkdev_pr_preempt(bdev, argp, true);  in blkdev_common_ioctl()
577 		return blkdev_pr_clear(bdev, argp);  in blkdev_common_ioctl()
589 int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,  in blkdev_ioctl()  argument
599 		return blkdev_getgeo(bdev, argp);  in blkdev_ioctl()
601 		return blkpg_ioctl(bdev, argp);  in blkdev_ioctl()
608 		return put_long(argp, (bdev->bd_bdi->ra_pages*PAGE_SIZE) / 512);  in blkdev_ioctl()
610 		size = i_size_read(bdev->bd_inode);  in blkdev_ioctl()
617 		return put_int(argp, block_size(bdev));  in blkdev_ioctl()
619 		return blkdev_bszset(bdev, mode, argp);  in blkdev_ioctl()
621 		return put_u64(argp, i_size_read(bdev->bd_inode));  in blkdev_ioctl()
625 		return blk_trace_ioctl(bdev, cmd, argp);  in blkdev_ioctl()
630 	ret = blkdev_common_ioctl(bdev, mode, cmd, arg, argp);  in blkdev_ioctl()
632 		return __blkdev_driver_ioctl(bdev, mode, cmd, arg);  in blkdev_ioctl()
652 	struct block_device *bdev = inode->i_bdev;  in compat_blkdev_ioctl()  local
653 	struct gendisk *disk = bdev->bd_disk;  in compat_blkdev_ioctl()
669 		return compat_hdio_getgeo(bdev, argp);  in compat_blkdev_ioctl()
671 		return compat_blkpg_ioctl(bdev, argp);  in compat_blkdev_ioctl()
679 			       (bdev->bd_bdi->ra_pages * PAGE_SIZE) / 512);  in compat_blkdev_ioctl()
681 		size = i_size_read(bdev->bd_inode);  in compat_blkdev_ioctl()
688 		return put_int(argp, bdev_logical_block_size(bdev));  in compat_blkdev_ioctl()
690 		return blkdev_bszset(bdev, mode, argp);  in compat_blkdev_ioctl()
692 		return put_u64(argp, i_size_read(bdev->bd_inode));  in compat_blkdev_ioctl()
696 		return blk_trace_ioctl(bdev, cmd, argp);  in compat_blkdev_ioctl()
701 	ret = blkdev_common_ioctl(bdev, mode, cmd, arg, argp);  in compat_blkdev_ioctl()
703 		ret = disk->fops->compat_ioctl(bdev, mode, cmd, arg);  in compat_blkdev_ioctl()