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()
39 	if (!IS_ALIGNED(p.start | p.length, bdev_logical_block_size(bdev)))  in blkpg_do_ioctl()
55 static int blkpg_ioctl(struct block_device *bdev,  in blkpg_ioctl()  argument
64 	return blkpg_do_ioctl(bdev, udata, op);  in blkpg_ioctl()
75 static int compat_blkpg_ioctl(struct block_device *bdev,  in compat_blkpg_ioctl()  argument
84 	return blkpg_do_ioctl(bdev, compat_ptr(udata), op);  in compat_blkpg_ioctl()
88 static int blk_ioctl_discard(struct block_device *bdev, blk_mode_t mode,  in blk_ioctl_discard()  argument
93 	struct inode *inode = bdev->bd_inode;  in blk_ioctl_discard()
99 	if (!bdev_max_discard_sectors(bdev))  in blk_ioctl_discard()
113 	if (start + len > bdev_nr_bytes(bdev))  in blk_ioctl_discard()
117 	err = truncate_bdev_range(bdev, mode, start, start + len - 1);  in blk_ioctl_discard()
120 	err = blkdev_issue_discard(bdev, start >> 9, len >> 9, GFP_KERNEL);  in blk_ioctl_discard()
126 static int blk_ioctl_secure_erase(struct block_device *bdev, blk_mode_t mode,  in blk_ioctl_secure_erase()  argument
135 	if (!bdev_max_secure_erase_sectors(bdev))  in blk_ioctl_secure_erase()
144 	if (start + len > bdev_nr_bytes(bdev))  in blk_ioctl_secure_erase()
147 	filemap_invalidate_lock(bdev->bd_inode->i_mapping);  in blk_ioctl_secure_erase()
148 	err = truncate_bdev_range(bdev, mode, start, start + len - 1);  in blk_ioctl_secure_erase()
150 		err = blkdev_issue_secure_erase(bdev, start >> 9, len >> 9,  in blk_ioctl_secure_erase()
152 	filemap_invalidate_unlock(bdev->bd_inode->i_mapping);  in blk_ioctl_secure_erase()
157 static int blk_ioctl_zeroout(struct block_device *bdev, blk_mode_t mode,  in blk_ioctl_zeroout()  argument
162 	struct inode *inode = bdev->bd_inode;  in blk_ioctl_zeroout()
179 	if (end >= (uint64_t)bdev_nr_bytes(bdev))  in blk_ioctl_zeroout()
186 	err = truncate_bdev_range(bdev, mode, start, end);  in blk_ioctl_zeroout()
190 	err = blkdev_issue_zeroout(bdev, start >> 9, len >> 9, GFP_KERNEL,  in blk_ioctl_zeroout()
246 int blkdev_compat_ptr_ioctl(struct block_device *bdev, blk_mode_t mode,  in blkdev_compat_ptr_ioctl()  argument
249 	struct gendisk *disk = bdev->bd_disk;  in blkdev_compat_ptr_ioctl()
252 		return disk->fops->ioctl(bdev, mode, cmd,  in blkdev_compat_ptr_ioctl()
260 static bool blkdev_pr_allowed(struct block_device *bdev, blk_mode_t mode)  in blkdev_pr_allowed()  argument
263 	if (bdev_is_partition(bdev))  in blkdev_pr_allowed()
275 static int blkdev_pr_register(struct block_device *bdev, blk_mode_t mode,  in blkdev_pr_register()  argument
278 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_register()
281 	if (!blkdev_pr_allowed(bdev, mode))  in blkdev_pr_register()
290 	return ops->pr_register(bdev, reg.old_key, reg.new_key, reg.flags);  in blkdev_pr_register()
293 static int blkdev_pr_reserve(struct block_device *bdev, blk_mode_t mode,  in blkdev_pr_reserve()  argument
296 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_reserve()
299 	if (!blkdev_pr_allowed(bdev, mode))  in blkdev_pr_reserve()
308 	return ops->pr_reserve(bdev, rsv.key, rsv.type, rsv.flags);  in blkdev_pr_reserve()
311 static int blkdev_pr_release(struct block_device *bdev, blk_mode_t mode,  in blkdev_pr_release()  argument
314 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_release()
317 	if (!blkdev_pr_allowed(bdev, mode))  in blkdev_pr_release()
326 	return ops->pr_release(bdev, rsv.key, rsv.type);  in blkdev_pr_release()
329 static int blkdev_pr_preempt(struct block_device *bdev, blk_mode_t mode,  in blkdev_pr_preempt()  argument
332 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_preempt()
335 	if (!blkdev_pr_allowed(bdev, mode))  in blkdev_pr_preempt()
344 	return ops->pr_preempt(bdev, p.old_key, p.new_key, p.type, abort);  in blkdev_pr_preempt()
347 static int blkdev_pr_clear(struct block_device *bdev, blk_mode_t mode,  in blkdev_pr_clear()  argument
350 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_clear()
353 	if (!blkdev_pr_allowed(bdev, mode))  in blkdev_pr_clear()
362 	return ops->pr_clear(bdev, c.key);  in blkdev_pr_clear()
365 static int blkdev_flushbuf(struct block_device *bdev, unsigned cmd,  in blkdev_flushbuf()  argument
371 	mutex_lock(&bdev->bd_holder_lock);  in blkdev_flushbuf()
372 	if (bdev->bd_holder_ops && bdev->bd_holder_ops->sync)  in blkdev_flushbuf()
373 		bdev->bd_holder_ops->sync(bdev);  in blkdev_flushbuf()
375 		sync_blockdev(bdev);  in blkdev_flushbuf()
376 	mutex_unlock(&bdev->bd_holder_lock);  in blkdev_flushbuf()
378 	invalidate_bdev(bdev);  in blkdev_flushbuf()
382 static int blkdev_roset(struct block_device *bdev, unsigned cmd,  in blkdev_roset()  argument
392 	if (bdev->bd_disk->fops->set_read_only) {  in blkdev_roset()
393 		ret = bdev->bd_disk->fops->set_read_only(bdev, n);  in blkdev_roset()
397 	bdev->bd_read_only = n;  in blkdev_roset()
401 static int blkdev_getgeo(struct block_device *bdev,  in blkdev_getgeo()  argument
404 	struct gendisk *disk = bdev->bd_disk;  in blkdev_getgeo()
418 	geo.start = get_start_sect(bdev);  in blkdev_getgeo()
419 	ret = disk->fops->getgeo(bdev, &geo);  in blkdev_getgeo()
435 static int compat_hdio_getgeo(struct block_device *bdev,  in compat_hdio_getgeo()  argument
438 	struct gendisk *disk = bdev->bd_disk;  in compat_hdio_getgeo()
452 	geo.start = get_start_sect(bdev);  in compat_hdio_getgeo()
453 	ret = disk->fops->getgeo(bdev, &geo);  in compat_hdio_getgeo()
467 static int blkdev_bszset(struct block_device *bdev, blk_mode_t mode,  in blkdev_bszset()  argument
480 		return set_blocksize(bdev, n);  in blkdev_bszset()
482 	if (IS_ERR(blkdev_get_by_dev(bdev->bd_dev, mode, &bdev, NULL)))  in blkdev_bszset()
484 	ret = set_blocksize(bdev, n);  in blkdev_bszset()
485 	blkdev_put(bdev, &bdev);  in blkdev_bszset()
495 static int blkdev_common_ioctl(struct block_device *bdev, blk_mode_t mode,  in blkdev_common_ioctl()  argument
503 		return blkdev_flushbuf(bdev, cmd, arg);  in blkdev_common_ioctl()
505 		return blkdev_roset(bdev, cmd, arg);  in blkdev_common_ioctl()
507 		return blk_ioctl_discard(bdev, mode, arg);  in blkdev_common_ioctl()
509 		return blk_ioctl_secure_erase(bdev, mode, argp);  in blkdev_common_ioctl()
511 		return blk_ioctl_zeroout(bdev, mode, arg);  in blkdev_common_ioctl()
513 		return put_u64(argp, bdev->bd_disk->diskseq);  in blkdev_common_ioctl()
515 		return blkdev_report_zones_ioctl(bdev, cmd, arg);  in blkdev_common_ioctl()
520 		return blkdev_zone_mgmt_ioctl(bdev, mode, cmd, arg);  in blkdev_common_ioctl()
522 		return put_uint(argp, bdev_zone_sectors(bdev));  in blkdev_common_ioctl()
524 		return put_uint(argp, bdev_nr_zones(bdev));  in blkdev_common_ioctl()
526 		return put_int(argp, bdev_read_only(bdev) != 0);  in blkdev_common_ioctl()
528 		return put_int(argp, bdev_logical_block_size(bdev));  in blkdev_common_ioctl()
530 		return put_uint(argp, bdev_physical_block_size(bdev));  in blkdev_common_ioctl()
532 		return put_uint(argp, bdev_io_min(bdev));  in blkdev_common_ioctl()
534 		return put_uint(argp, bdev_io_opt(bdev));  in blkdev_common_ioctl()
536 		return put_int(argp, bdev_alignment_offset(bdev));  in blkdev_common_ioctl()
541 				    queue_max_sectors(bdev_get_queue(bdev)));  in blkdev_common_ioctl()
544 		return put_ushort(argp, !bdev_nonrot(bdev));  in blkdev_common_ioctl()
549 		bdev->bd_disk->bdi->ra_pages = (arg * 512) / PAGE_SIZE;  in blkdev_common_ioctl()
554 		if (bdev_is_partition(bdev))  in blkdev_common_ioctl()
556 		return disk_scan_partitions(bdev->bd_disk, mode);  in blkdev_common_ioctl()
560 		return blk_trace_ioctl(bdev, cmd, argp);  in blkdev_common_ioctl()
562 		return blkdev_pr_register(bdev, mode, argp);  in blkdev_common_ioctl()
564 		return blkdev_pr_reserve(bdev, mode, argp);  in blkdev_common_ioctl()
566 		return blkdev_pr_release(bdev, mode, argp);  in blkdev_common_ioctl()
568 		return blkdev_pr_preempt(bdev, mode, argp, false);  in blkdev_common_ioctl()
570 		return blkdev_pr_preempt(bdev, mode, argp, true);  in blkdev_common_ioctl()
572 		return blkdev_pr_clear(bdev, mode, argp);  in blkdev_common_ioctl()
586 	struct block_device *bdev = I_BDEV(file->f_mapping->host);  in blkdev_ioctl()  local
594 		return blkdev_getgeo(bdev, argp);  in blkdev_ioctl()
596 		return blkpg_ioctl(bdev, argp);  in blkdev_ioctl()
604 			(bdev->bd_disk->bdi->ra_pages * PAGE_SIZE) / 512);  in blkdev_ioctl()
606 		if (bdev_nr_sectors(bdev) > ~0UL)  in blkdev_ioctl()
608 		return put_ulong(argp, bdev_nr_sectors(bdev));  in blkdev_ioctl()
612 		return put_int(argp, block_size(bdev));  in blkdev_ioctl()
614 		return blkdev_bszset(bdev, mode, argp);  in blkdev_ioctl()
616 		return put_u64(argp, bdev_nr_bytes(bdev));  in blkdev_ioctl()
620 		return blk_trace_ioctl(bdev, cmd, argp);  in blkdev_ioctl()
625 	ret = blkdev_common_ioctl(bdev, mode, cmd, arg, argp);  in blkdev_ioctl()
629 	if (!bdev->bd_disk->fops->ioctl)  in blkdev_ioctl()
631 	return bdev->bd_disk->fops->ioctl(bdev, mode, cmd, arg);  in blkdev_ioctl()
647 	struct block_device *bdev = I_BDEV(file->f_mapping->host);  in compat_blkdev_ioctl()  local
648 	struct gendisk *disk = bdev->bd_disk;  in compat_blkdev_ioctl()
654 		return compat_hdio_getgeo(bdev, argp);  in compat_blkdev_ioctl()
656 		return compat_blkpg_ioctl(bdev, argp);  in compat_blkdev_ioctl()
664 			(bdev->bd_disk->bdi->ra_pages * PAGE_SIZE) / 512);  in compat_blkdev_ioctl()
666 		if (bdev_nr_sectors(bdev) > ~(compat_ulong_t)0)  in compat_blkdev_ioctl()
668 		return compat_put_ulong(argp, bdev_nr_sectors(bdev));  in compat_blkdev_ioctl()
672 		return put_int(argp, bdev_logical_block_size(bdev));  in compat_blkdev_ioctl()
674 		return blkdev_bszset(bdev, mode, argp);  in compat_blkdev_ioctl()
676 		return put_u64(argp, bdev_nr_bytes(bdev));  in compat_blkdev_ioctl()
680 		return blk_trace_ioctl(bdev, cmd, argp);  in compat_blkdev_ioctl()
685 	ret = blkdev_common_ioctl(bdev, mode, cmd, arg, argp);  in compat_blkdev_ioctl()
687 		ret = disk->fops->compat_ioctl(bdev, mode, cmd, arg);  in compat_blkdev_ioctl()