14 static int blkpg_ioctl(struct block_device *bdev, struct blkpg_ioctl_arg __user *arg)  in blkpg_ioctl()  argument
31 	disk = bdev->bd_disk;  in blkpg_ioctl()
32 	if (bdev != bdev->bd_contains)  in blkpg_ioctl()
50 			if (p.start & (bdev_logical_block_size(bdev) - 1))  in blkpg_ioctl()
53 			mutex_lock(&bdev->bd_mutex);  in blkpg_ioctl()
62 					mutex_unlock(&bdev->bd_mutex);  in blkpg_ioctl()
71 			mutex_unlock(&bdev->bd_mutex);  in blkpg_ioctl()
93 			mutex_lock_nested(&bdev->bd_mutex, 1);  in blkpg_ioctl()
95 			mutex_unlock(&bdev->bd_mutex);  in blkpg_ioctl()
121 			mutex_lock_nested(&bdev->bd_mutex, 1);  in blkpg_ioctl()
124 				mutex_unlock(&bdev->bd_mutex);  in blkpg_ioctl()
139 					mutex_unlock(&bdev->bd_mutex);  in blkpg_ioctl()
149 			mutex_unlock(&bdev->bd_mutex);  in blkpg_ioctl()
163 int __blkdev_reread_part(struct block_device *bdev)  in __blkdev_reread_part()  argument
165 	struct gendisk *disk = bdev->bd_disk;  in __blkdev_reread_part()
167 	if (!disk_part_scan_enabled(disk) || bdev != bdev->bd_contains)  in __blkdev_reread_part()
172 	lockdep_assert_held(&bdev->bd_mutex);  in __blkdev_reread_part()
174 	return rescan_partitions(disk, bdev);  in __blkdev_reread_part()
189 int blkdev_reread_part(struct block_device *bdev)  in blkdev_reread_part()  argument
193 	mutex_lock(&bdev->bd_mutex);  in blkdev_reread_part()
194 	res = __blkdev_reread_part(bdev);  in blkdev_reread_part()
195 	mutex_unlock(&bdev->bd_mutex);  in blkdev_reread_part()
201 static int blk_ioctl_discard(struct block_device *bdev, fmode_t mode,  in blk_ioctl_discard()  argument
206 	struct request_queue *q = bdev_get_queue(bdev);  in blk_ioctl_discard()
207 	struct address_space *mapping = bdev->bd_inode->i_mapping;  in blk_ioctl_discard()
227 	if (start + len > i_size_read(bdev->bd_inode))  in blk_ioctl_discard()
230 	return blkdev_issue_discard(bdev, start >> 9, len >> 9,  in blk_ioctl_discard()
234 static int blk_ioctl_zeroout(struct block_device *bdev, fmode_t mode,  in blk_ioctl_zeroout()  argument
255 	if (end >= (uint64_t)i_size_read(bdev->bd_inode))  in blk_ioctl_zeroout()
261 	mapping = bdev->bd_inode->i_mapping;  in blk_ioctl_zeroout()
264 	return blkdev_issue_zeroout(bdev, start >> 9, len >> 9, GFP_KERNEL,  in blk_ioctl_zeroout()
298 int __blkdev_driver_ioctl(struct block_device *bdev, fmode_t mode,  in __blkdev_driver_ioctl()  argument
301 	struct gendisk *disk = bdev->bd_disk;  in __blkdev_driver_ioctl()
304 		return disk->fops->ioctl(bdev, mode, cmd, arg);  in __blkdev_driver_ioctl()
315 static int blkdev_pr_register(struct block_device *bdev,  in blkdev_pr_register()  argument
318 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_register()
330 	return ops->pr_register(bdev, reg.old_key, reg.new_key, reg.flags);  in blkdev_pr_register()
333 static int blkdev_pr_reserve(struct block_device *bdev,  in blkdev_pr_reserve()  argument
336 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_reserve()
348 	return ops->pr_reserve(bdev, rsv.key, rsv.type, rsv.flags);  in blkdev_pr_reserve()
351 static int blkdev_pr_release(struct block_device *bdev,  in blkdev_pr_release()  argument
354 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_release()
366 	return ops->pr_release(bdev, rsv.key, rsv.type);  in blkdev_pr_release()
369 static int blkdev_pr_preempt(struct block_device *bdev,  in blkdev_pr_preempt()  argument
372 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_preempt()
384 	return ops->pr_preempt(bdev, p.old_key, p.new_key, p.type, abort);  in blkdev_pr_preempt()
387 static int blkdev_pr_clear(struct block_device *bdev,  in blkdev_pr_clear()  argument
390 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_clear()
402 	return ops->pr_clear(bdev, c.key);  in blkdev_pr_clear()
425 static int blkdev_flushbuf(struct block_device *bdev, fmode_t mode,  in blkdev_flushbuf()  argument
433 	ret = __blkdev_driver_ioctl(bdev, mode, cmd, arg);  in blkdev_flushbuf()
437 	fsync_bdev(bdev);  in blkdev_flushbuf()
438 	invalidate_bdev(bdev);  in blkdev_flushbuf()
442 static int blkdev_roset(struct block_device *bdev, fmode_t mode,  in blkdev_roset()  argument
450 	ret = __blkdev_driver_ioctl(bdev, mode, cmd, arg);  in blkdev_roset()
455 	set_device_ro(bdev, n);  in blkdev_roset()
459 static int blkdev_getgeo(struct block_device *bdev,  in blkdev_getgeo()  argument
462 	struct gendisk *disk = bdev->bd_disk;  in blkdev_getgeo()
476 	geo.start = get_start_sect(bdev);  in blkdev_getgeo()
477 	ret = disk->fops->getgeo(bdev, &geo);  in blkdev_getgeo()
486 static int blkdev_bszset(struct block_device *bdev, fmode_t mode,  in blkdev_bszset()  argument
499 		bdgrab(bdev);  in blkdev_bszset()
500 		if (blkdev_get(bdev, mode | FMODE_EXCL, &bdev) < 0)  in blkdev_bszset()
504 	ret = set_blocksize(bdev, n);  in blkdev_bszset()
506 		blkdev_put(bdev, mode | FMODE_EXCL);  in blkdev_bszset()
513 int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,  in blkdev_ioctl()  argument
522 		return blkdev_flushbuf(bdev, mode, cmd, arg);  in blkdev_ioctl()
524 		return blkdev_roset(bdev, mode, cmd, arg);  in blkdev_ioctl()
526 		return blk_ioctl_discard(bdev, mode, arg, 0);  in blkdev_ioctl()
528 		return blk_ioctl_discard(bdev, mode, arg,  in blkdev_ioctl()
531 		return blk_ioctl_zeroout(bdev, mode, arg);  in blkdev_ioctl()
533 		return blkdev_report_zones_ioctl(bdev, mode, cmd, arg);  in blkdev_ioctl()
535 		return blkdev_reset_zones_ioctl(bdev, mode, cmd, arg);  in blkdev_ioctl()
537 		return put_uint(arg, bdev_zone_sectors(bdev));  in blkdev_ioctl()
539 		return put_uint(arg, blkdev_nr_zones(bdev));  in blkdev_ioctl()
541 		return blkdev_getgeo(bdev, argp);  in blkdev_ioctl()
546 		return put_long(arg, (bdev->bd_bdi->ra_pages*PAGE_SIZE) / 512);  in blkdev_ioctl()
548 		return put_int(arg, bdev_read_only(bdev) != 0);  in blkdev_ioctl()
550 		return put_int(arg, block_size(bdev));  in blkdev_ioctl()
552 		return put_int(arg, bdev_logical_block_size(bdev));  in blkdev_ioctl()
554 		return put_uint(arg, bdev_physical_block_size(bdev));  in blkdev_ioctl()
556 		return put_uint(arg, bdev_io_min(bdev));  in blkdev_ioctl()
558 		return put_uint(arg, bdev_io_opt(bdev));  in blkdev_ioctl()
560 		return put_int(arg, bdev_alignment_offset(bdev));  in blkdev_ioctl()
565 				    queue_max_sectors(bdev_get_queue(bdev)));  in blkdev_ioctl()
568 		return put_ushort(arg, !blk_queue_nonrot(bdev_get_queue(bdev)));  in blkdev_ioctl()
573 		bdev->bd_bdi->ra_pages = (arg * 512) / PAGE_SIZE;  in blkdev_ioctl()
576 		return blkdev_bszset(bdev, mode, argp);  in blkdev_ioctl()
578 		return blkpg_ioctl(bdev, argp);  in blkdev_ioctl()
580 		return blkdev_reread_part(bdev);  in blkdev_ioctl()
582 		size = i_size_read(bdev->bd_inode);  in blkdev_ioctl()
587 		return put_u64(arg, i_size_read(bdev->bd_inode));  in blkdev_ioctl()
592 		return blk_trace_ioctl(bdev, cmd, argp);  in blkdev_ioctl()
594 		return blkdev_pr_register(bdev, argp);  in blkdev_ioctl()
596 		return blkdev_pr_reserve(bdev, argp);  in blkdev_ioctl()
598 		return blkdev_pr_release(bdev, argp);  in blkdev_ioctl()
600 		return blkdev_pr_preempt(bdev, argp, false);  in blkdev_ioctl()
602 		return blkdev_pr_preempt(bdev, argp, true);  in blkdev_ioctl()
604 		return blkdev_pr_clear(bdev, argp);  in blkdev_ioctl()
606 		return __blkdev_driver_ioctl(bdev, mode, cmd, arg);  in blkdev_ioctl()