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 blk_ioctl_discard(struct block_device *bdev, fmode_t mode,  in blk_ioctl_discard()  argument
90 	struct inode *inode = bdev->bd_inode;  in blk_ioctl_discard()
96 	if (!bdev_max_discard_sectors(bdev))  in blk_ioctl_discard()
110 	if (start + len > bdev_nr_bytes(bdev))  in blk_ioctl_discard()
114 	err = truncate_bdev_range(bdev, mode, start, start + len - 1);  in blk_ioctl_discard()
117 	err = blkdev_issue_discard(bdev, start >> 9, len >> 9, GFP_KERNEL);  in blk_ioctl_discard()
123 static int blk_ioctl_secure_erase(struct block_device *bdev, fmode_t mode,  in blk_ioctl_secure_erase()  argument
132 	if (!bdev_max_secure_erase_sectors(bdev))  in blk_ioctl_secure_erase()
141 	if (start + len > bdev_nr_bytes(bdev))  in blk_ioctl_secure_erase()
144 	filemap_invalidate_lock(bdev->bd_inode->i_mapping);  in blk_ioctl_secure_erase()
145 	err = truncate_bdev_range(bdev, mode, start, start + len - 1);  in blk_ioctl_secure_erase()
147 		err = blkdev_issue_secure_erase(bdev, start >> 9, len >> 9,  in blk_ioctl_secure_erase()
149 	filemap_invalidate_unlock(bdev->bd_inode->i_mapping);  in blk_ioctl_secure_erase()
154 static int blk_ioctl_zeroout(struct block_device *bdev, fmode_t mode,  in blk_ioctl_zeroout()  argument
159 	struct inode *inode = bdev->bd_inode;  in blk_ioctl_zeroout()
176 	if (end >= (uint64_t)bdev_nr_bytes(bdev))  in blk_ioctl_zeroout()
183 	err = truncate_bdev_range(bdev, mode, start, end);  in blk_ioctl_zeroout()
187 	err = blkdev_issue_zeroout(bdev, start >> 9, len >> 9, GFP_KERNEL,  in blk_ioctl_zeroout()
243 int blkdev_compat_ptr_ioctl(struct block_device *bdev, fmode_t mode,  in blkdev_compat_ptr_ioctl()  argument
246 	struct gendisk *disk = bdev->bd_disk;  in blkdev_compat_ptr_ioctl()
249 		return disk->fops->ioctl(bdev, mode, cmd,  in blkdev_compat_ptr_ioctl()
257 static int blkdev_pr_register(struct block_device *bdev,  in blkdev_pr_register()  argument
260 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_register()
272 	return ops->pr_register(bdev, reg.old_key, reg.new_key, reg.flags);  in blkdev_pr_register()
275 static int blkdev_pr_reserve(struct block_device *bdev,  in blkdev_pr_reserve()  argument
278 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_reserve()
290 	return ops->pr_reserve(bdev, rsv.key, rsv.type, rsv.flags);  in blkdev_pr_reserve()
293 static int blkdev_pr_release(struct block_device *bdev,  in blkdev_pr_release()  argument
296 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_release()
308 	return ops->pr_release(bdev, rsv.key, rsv.type);  in blkdev_pr_release()
311 static int blkdev_pr_preempt(struct block_device *bdev,  in blkdev_pr_preempt()  argument
314 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_preempt()
326 	return ops->pr_preempt(bdev, p.old_key, p.new_key, p.type, abort);  in blkdev_pr_preempt()
329 static int blkdev_pr_clear(struct block_device *bdev,  in blkdev_pr_clear()  argument
332 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_clear()
344 	return ops->pr_clear(bdev, c.key);  in blkdev_pr_clear()
347 static int blkdev_flushbuf(struct block_device *bdev, fmode_t mode,  in blkdev_flushbuf()  argument
352 	fsync_bdev(bdev);  in blkdev_flushbuf()
353 	invalidate_bdev(bdev);  in blkdev_flushbuf()
357 static int blkdev_roset(struct block_device *bdev, fmode_t mode,  in blkdev_roset()  argument
367 	if (bdev->bd_disk->fops->set_read_only) {  in blkdev_roset()
368 		ret = bdev->bd_disk->fops->set_read_only(bdev, n);  in blkdev_roset()
372 	bdev->bd_read_only = n;  in blkdev_roset()
376 static int blkdev_getgeo(struct block_device *bdev,  in blkdev_getgeo()  argument
379 	struct gendisk *disk = bdev->bd_disk;  in blkdev_getgeo()
393 	geo.start = get_start_sect(bdev);  in blkdev_getgeo()
394 	ret = disk->fops->getgeo(bdev, &geo);  in blkdev_getgeo()
410 static int compat_hdio_getgeo(struct block_device *bdev,  in compat_hdio_getgeo()  argument
413 	struct gendisk *disk = bdev->bd_disk;  in compat_hdio_getgeo()
427 	geo.start = get_start_sect(bdev);  in compat_hdio_getgeo()
428 	ret = disk->fops->getgeo(bdev, &geo);  in compat_hdio_getgeo()
442 static int blkdev_bszset(struct block_device *bdev, fmode_t mode,  in blkdev_bszset()  argument
455 		return set_blocksize(bdev, n);  in blkdev_bszset()
457 	if (IS_ERR(blkdev_get_by_dev(bdev->bd_dev, mode | FMODE_EXCL, &bdev)))  in blkdev_bszset()
459 	ret = set_blocksize(bdev, n);  in blkdev_bszset()
460 	blkdev_put(bdev, mode | FMODE_EXCL);  in blkdev_bszset()
470 static int blkdev_common_ioctl(struct block_device *bdev, fmode_t mode,  in blkdev_common_ioctl()  argument
477 		return blkdev_flushbuf(bdev, mode, cmd, arg);  in blkdev_common_ioctl()
479 		return blkdev_roset(bdev, mode, cmd, arg);  in blkdev_common_ioctl()
481 		return blk_ioctl_discard(bdev, mode, arg);  in blkdev_common_ioctl()
483 		return blk_ioctl_secure_erase(bdev, mode, argp);  in blkdev_common_ioctl()
485 		return blk_ioctl_zeroout(bdev, mode, arg);  in blkdev_common_ioctl()
487 		return put_u64(argp, bdev->bd_disk->diskseq);  in blkdev_common_ioctl()
489 		return blkdev_report_zones_ioctl(bdev, mode, cmd, arg);  in blkdev_common_ioctl()
494 		return blkdev_zone_mgmt_ioctl(bdev, mode, cmd, arg);  in blkdev_common_ioctl()
496 		return put_uint(argp, bdev_zone_sectors(bdev));  in blkdev_common_ioctl()
498 		return put_uint(argp, bdev_nr_zones(bdev));  in blkdev_common_ioctl()
500 		return put_int(argp, bdev_read_only(bdev) != 0);  in blkdev_common_ioctl()
502 		return put_int(argp, bdev_logical_block_size(bdev));  in blkdev_common_ioctl()
504 		return put_uint(argp, bdev_physical_block_size(bdev));  in blkdev_common_ioctl()
506 		return put_uint(argp, bdev_io_min(bdev));  in blkdev_common_ioctl()
508 		return put_uint(argp, bdev_io_opt(bdev));  in blkdev_common_ioctl()
510 		return put_int(argp, bdev_alignment_offset(bdev));  in blkdev_common_ioctl()
515 				    queue_max_sectors(bdev_get_queue(bdev)));  in blkdev_common_ioctl()
518 		return put_ushort(argp, !bdev_nonrot(bdev));  in blkdev_common_ioctl()
523 		bdev->bd_disk->bdi->ra_pages = (arg * 512) / PAGE_SIZE;  in blkdev_common_ioctl()
528 		if (bdev_is_partition(bdev))  in blkdev_common_ioctl()
530 		return disk_scan_partitions(bdev->bd_disk, mode & ~FMODE_EXCL);  in blkdev_common_ioctl()
534 		return blk_trace_ioctl(bdev, cmd, argp);  in blkdev_common_ioctl()
536 		return blkdev_pr_register(bdev, argp);  in blkdev_common_ioctl()
538 		return blkdev_pr_reserve(bdev, argp);  in blkdev_common_ioctl()
540 		return blkdev_pr_release(bdev, argp);  in blkdev_common_ioctl()
542 		return blkdev_pr_preempt(bdev, argp, false);  in blkdev_common_ioctl()
544 		return blkdev_pr_preempt(bdev, argp, true);  in blkdev_common_ioctl()
546 		return blkdev_pr_clear(bdev, argp);  in blkdev_common_ioctl()
560 	struct block_device *bdev = I_BDEV(file->f_mapping->host);  in blkdev_ioctl()  local
577 		return blkdev_getgeo(bdev, argp);  in blkdev_ioctl()
579 		return blkpg_ioctl(bdev, argp);  in blkdev_ioctl()
587 			(bdev->bd_disk->bdi->ra_pages * PAGE_SIZE) / 512);  in blkdev_ioctl()
589 		if (bdev_nr_sectors(bdev) > ~0UL)  in blkdev_ioctl()
591 		return put_ulong(argp, bdev_nr_sectors(bdev));  in blkdev_ioctl()
595 		return put_int(argp, block_size(bdev));  in blkdev_ioctl()
597 		return blkdev_bszset(bdev, mode, argp);  in blkdev_ioctl()
599 		return put_u64(argp, bdev_nr_bytes(bdev));  in blkdev_ioctl()
603 		return blk_trace_ioctl(bdev, cmd, argp);  in blkdev_ioctl()
608 	ret = blkdev_common_ioctl(bdev, mode, cmd, arg, argp);  in blkdev_ioctl()
612 	if (!bdev->bd_disk->fops->ioctl)  in blkdev_ioctl()
614 	return bdev->bd_disk->fops->ioctl(bdev, mode, cmd, arg);  in blkdev_ioctl()
630 	struct block_device *bdev = I_BDEV(file->f_mapping->host);  in compat_blkdev_ioctl()  local
631 	struct gendisk *disk = bdev->bd_disk;  in compat_blkdev_ioctl()
646 		return compat_hdio_getgeo(bdev, argp);  in compat_blkdev_ioctl()
648 		return compat_blkpg_ioctl(bdev, argp);  in compat_blkdev_ioctl()
656 			(bdev->bd_disk->bdi->ra_pages * PAGE_SIZE) / 512);  in compat_blkdev_ioctl()
658 		if (bdev_nr_sectors(bdev) > ~(compat_ulong_t)0)  in compat_blkdev_ioctl()
660 		return compat_put_ulong(argp, bdev_nr_sectors(bdev));  in compat_blkdev_ioctl()
664 		return put_int(argp, bdev_logical_block_size(bdev));  in compat_blkdev_ioctl()
666 		return blkdev_bszset(bdev, mode, argp);  in compat_blkdev_ioctl()
668 		return put_u64(argp, bdev_nr_bytes(bdev));  in compat_blkdev_ioctl()
672 		return blk_trace_ioctl(bdev, cmd, argp);  in compat_blkdev_ioctl()
677 	ret = blkdev_common_ioctl(bdev, mode, cmd, arg, argp);  in compat_blkdev_ioctl()
679 		ret = disk->fops->compat_ioctl(bdev, mode, cmd, arg);  in compat_blkdev_ioctl()