16 static int blkpg_do_ioctl(struct block_device *bdev,  in blkpg_do_ioctl()  argument
19 	struct gendisk *disk = bdev->bd_disk;  in blkpg_do_ioctl()
27 	if (bdev_is_partition(bdev))  in blkpg_do_ioctl()
42 		if (p.start & (bdev_logical_block_size(bdev) - 1))  in blkpg_do_ioctl()
52 static int blkpg_ioctl(struct block_device *bdev,  in blkpg_ioctl()  argument
61 	return blkpg_do_ioctl(bdev, udata, op);  in blkpg_ioctl()
72 static int compat_blkpg_ioctl(struct block_device *bdev,  in compat_blkpg_ioctl()  argument
81 	return blkpg_do_ioctl(bdev, compat_ptr(udata), op);  in compat_blkpg_ioctl()
85 static int blkdev_reread_part(struct block_device *bdev, fmode_t mode)  in blkdev_reread_part()  argument
89 	if (!disk_part_scan_enabled(bdev->bd_disk) || bdev_is_partition(bdev))  in blkdev_reread_part()
93 	if (bdev->bd_disk->open_partitions)  in blkdev_reread_part()
101 	set_bit(GD_NEED_PART_SCAN, &bdev->bd_disk->state);  in blkdev_reread_part()
103 	tmp = blkdev_get_by_dev(bdev->bd_dev, mode, NULL);  in blkdev_reread_part()
110 static int blk_ioctl_discard(struct block_device *bdev, fmode_t mode,  in blk_ioctl_discard()  argument
115 	struct request_queue *q = bdev_get_queue(bdev);  in blk_ioctl_discard()
135 	if (start + len > i_size_read(bdev->bd_inode))  in blk_ioctl_discard()
138 	err = truncate_bdev_range(bdev, mode, start, start + len - 1);  in blk_ioctl_discard()
142 	return blkdev_issue_discard(bdev, start >> 9, len >> 9,  in blk_ioctl_discard()
146 static int blk_ioctl_zeroout(struct block_device *bdev, fmode_t mode,  in blk_ioctl_zeroout()  argument
167 	if (end >= (uint64_t)i_size_read(bdev->bd_inode))  in blk_ioctl_zeroout()
173 	err = truncate_bdev_range(bdev, mode, start, end);  in blk_ioctl_zeroout()
177 	return blkdev_issue_zeroout(bdev, start >> 9, len >> 9, GFP_KERNEL,  in blk_ioctl_zeroout()
229 int blkdev_compat_ptr_ioctl(struct block_device *bdev, fmode_t mode,  in blkdev_compat_ptr_ioctl()  argument
232 	struct gendisk *disk = bdev->bd_disk;  in blkdev_compat_ptr_ioctl()
235 		return disk->fops->ioctl(bdev, mode, cmd,  in blkdev_compat_ptr_ioctl()
243 static int blkdev_pr_register(struct block_device *bdev,  in blkdev_pr_register()  argument
246 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_register()
258 	return ops->pr_register(bdev, reg.old_key, reg.new_key, reg.flags);  in blkdev_pr_register()
261 static int blkdev_pr_reserve(struct block_device *bdev,  in blkdev_pr_reserve()  argument
264 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_reserve()
276 	return ops->pr_reserve(bdev, rsv.key, rsv.type, rsv.flags);  in blkdev_pr_reserve()
279 static int blkdev_pr_release(struct block_device *bdev,  in blkdev_pr_release()  argument
282 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_release()
294 	return ops->pr_release(bdev, rsv.key, rsv.type);  in blkdev_pr_release()
297 static int blkdev_pr_preempt(struct block_device *bdev,  in blkdev_pr_preempt()  argument
300 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_preempt()
312 	return ops->pr_preempt(bdev, p.old_key, p.new_key, p.type, abort);  in blkdev_pr_preempt()
315 static int blkdev_pr_clear(struct block_device *bdev,  in blkdev_pr_clear()  argument
318 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_clear()
330 	return ops->pr_clear(bdev, c.key);  in blkdev_pr_clear()
333 static int blkdev_flushbuf(struct block_device *bdev, fmode_t mode,  in blkdev_flushbuf()  argument
338 	fsync_bdev(bdev);  in blkdev_flushbuf()
339 	invalidate_bdev(bdev);  in blkdev_flushbuf()
343 static int blkdev_roset(struct block_device *bdev, fmode_t mode,  in blkdev_roset()  argument
353 	if (bdev->bd_disk->fops->set_read_only) {  in blkdev_roset()
354 		ret = bdev->bd_disk->fops->set_read_only(bdev, n);  in blkdev_roset()
358 	bdev->bd_read_only = n;  in blkdev_roset()
362 static int blkdev_getgeo(struct block_device *bdev,  in blkdev_getgeo()  argument
365 	struct gendisk *disk = bdev->bd_disk;  in blkdev_getgeo()
379 	geo.start = get_start_sect(bdev);  in blkdev_getgeo()
380 	ret = disk->fops->getgeo(bdev, &geo);  in blkdev_getgeo()
396 static int compat_hdio_getgeo(struct block_device *bdev,  in compat_hdio_getgeo()  argument
399 	struct gendisk *disk = bdev->bd_disk;  in compat_hdio_getgeo()
413 	geo.start = get_start_sect(bdev);  in compat_hdio_getgeo()
414 	ret = disk->fops->getgeo(bdev, &geo);  in compat_hdio_getgeo()
428 static int blkdev_bszset(struct block_device *bdev, fmode_t mode,  in blkdev_bszset()  argument
441 		return set_blocksize(bdev, n);  in blkdev_bszset()
443 	if (IS_ERR(blkdev_get_by_dev(bdev->bd_dev, mode | FMODE_EXCL, &bdev)))  in blkdev_bszset()
445 	ret = set_blocksize(bdev, n);  in blkdev_bszset()
446 	blkdev_put(bdev, mode | FMODE_EXCL);  in blkdev_bszset()
456 static int blkdev_common_ioctl(struct block_device *bdev, fmode_t mode,  in blkdev_common_ioctl()  argument
463 		return blkdev_flushbuf(bdev, mode, cmd, arg);  in blkdev_common_ioctl()
465 		return blkdev_roset(bdev, mode, cmd, arg);  in blkdev_common_ioctl()
467 		return blk_ioctl_discard(bdev, mode, arg, 0);  in blkdev_common_ioctl()
469 		return blk_ioctl_discard(bdev, mode, arg,  in blkdev_common_ioctl()
472 		return blk_ioctl_zeroout(bdev, mode, arg);  in blkdev_common_ioctl()
474 		return put_u64(argp, bdev->bd_disk->diskseq);  in blkdev_common_ioctl()
476 		return blkdev_report_zones_ioctl(bdev, mode, cmd, arg);  in blkdev_common_ioctl()
481 		return blkdev_zone_mgmt_ioctl(bdev, mode, cmd, arg);  in blkdev_common_ioctl()
483 		return put_uint(argp, bdev_zone_sectors(bdev));  in blkdev_common_ioctl()
485 		return put_uint(argp, blkdev_nr_zones(bdev->bd_disk));  in blkdev_common_ioctl()
487 		return put_int(argp, bdev_read_only(bdev) != 0);  in blkdev_common_ioctl()
489 		return put_int(argp, bdev_logical_block_size(bdev));  in blkdev_common_ioctl()
491 		return put_uint(argp, bdev_physical_block_size(bdev));  in blkdev_common_ioctl()
493 		return put_uint(argp, bdev_io_min(bdev));  in blkdev_common_ioctl()
495 		return put_uint(argp, bdev_io_opt(bdev));  in blkdev_common_ioctl()
497 		return put_int(argp, bdev_alignment_offset(bdev));  in blkdev_common_ioctl()
502 				    queue_max_sectors(bdev_get_queue(bdev)));  in blkdev_common_ioctl()
505 		return put_ushort(argp, !blk_queue_nonrot(bdev_get_queue(bdev)));  in blkdev_common_ioctl()
510 		bdev->bd_disk->bdi->ra_pages = (arg * 512) / PAGE_SIZE;  in blkdev_common_ioctl()
513 		return blkdev_reread_part(bdev, mode);  in blkdev_common_ioctl()
517 		return blk_trace_ioctl(bdev, cmd, argp);  in blkdev_common_ioctl()
519 		return blkdev_pr_register(bdev, argp);  in blkdev_common_ioctl()
521 		return blkdev_pr_reserve(bdev, argp);  in blkdev_common_ioctl()
523 		return blkdev_pr_release(bdev, argp);  in blkdev_common_ioctl()
525 		return blkdev_pr_preempt(bdev, argp, false);  in blkdev_common_ioctl()
527 		return blkdev_pr_preempt(bdev, argp, true);  in blkdev_common_ioctl()
529 		return blkdev_pr_clear(bdev, argp);  in blkdev_common_ioctl()
541 int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,  in blkdev_ioctl()  argument
551 		return blkdev_getgeo(bdev, argp);  in blkdev_ioctl()
553 		return blkpg_ioctl(bdev, argp);  in blkdev_ioctl()
561 			(bdev->bd_disk->bdi->ra_pages * PAGE_SIZE) / 512);  in blkdev_ioctl()
563 		size = i_size_read(bdev->bd_inode);  in blkdev_ioctl()
570 		return put_int(argp, block_size(bdev));  in blkdev_ioctl()
572 		return blkdev_bszset(bdev, mode, argp);  in blkdev_ioctl()
574 		return put_u64(argp, i_size_read(bdev->bd_inode));  in blkdev_ioctl()
578 		return blk_trace_ioctl(bdev, cmd, argp);  in blkdev_ioctl()
583 	ret = blkdev_common_ioctl(bdev, mode, cmd, arg, argp);  in blkdev_ioctl()
587 	if (!bdev->bd_disk->fops->ioctl)  in blkdev_ioctl()
589 	return bdev->bd_disk->fops->ioctl(bdev, mode, cmd, arg);  in blkdev_ioctl()
606 	struct block_device *bdev = I_BDEV(file->f_mapping->host);  in compat_blkdev_ioctl()  local
607 	struct gendisk *disk = bdev->bd_disk;  in compat_blkdev_ioctl()
623 		return compat_hdio_getgeo(bdev, argp);  in compat_blkdev_ioctl()
625 		return compat_blkpg_ioctl(bdev, argp);  in compat_blkdev_ioctl()
633 			(bdev->bd_disk->bdi->ra_pages * PAGE_SIZE) / 512);  in compat_blkdev_ioctl()
635 		size = i_size_read(bdev->bd_inode);  in compat_blkdev_ioctl()
642 		return put_int(argp, bdev_logical_block_size(bdev));  in compat_blkdev_ioctl()
644 		return blkdev_bszset(bdev, mode, argp);  in compat_blkdev_ioctl()
646 		return put_u64(argp, i_size_read(bdev->bd_inode));  in compat_blkdev_ioctl()
650 		return blk_trace_ioctl(bdev, cmd, argp);  in compat_blkdev_ioctl()
655 	ret = blkdev_common_ioctl(bdev, mode, cmd, arg, argp);  in compat_blkdev_ioctl()
657 		ret = disk->fops->compat_ioctl(bdev, mode, cmd, arg);  in compat_blkdev_ioctl()