13 static int blkpg_ioctl(struct block_device *bdev, struct blkpg_ioctl_arg __user *arg)  in blkpg_ioctl()  argument
30 	disk = bdev->bd_disk;  in blkpg_ioctl()
31 	if (bdev != bdev->bd_contains)  in blkpg_ioctl()
49 			if (p.start & (bdev_logical_block_size(bdev) - 1))  in blkpg_ioctl()
52 			mutex_lock(&bdev->bd_mutex);  in blkpg_ioctl()
61 					mutex_unlock(&bdev->bd_mutex);  in blkpg_ioctl()
70 			mutex_unlock(&bdev->bd_mutex);  in blkpg_ioctl()
92 			mutex_lock_nested(&bdev->bd_mutex, 1);  in blkpg_ioctl()
94 			mutex_unlock(&bdev->bd_mutex);  in blkpg_ioctl()
120 			mutex_lock_nested(&bdev->bd_mutex, 1);  in blkpg_ioctl()
123 				mutex_unlock(&bdev->bd_mutex);  in blkpg_ioctl()
138 					mutex_unlock(&bdev->bd_mutex);  in blkpg_ioctl()
148 			mutex_unlock(&bdev->bd_mutex);  in blkpg_ioctl()
162 int __blkdev_reread_part(struct block_device *bdev)  in __blkdev_reread_part()  argument
164 	struct gendisk *disk = bdev->bd_disk;  in __blkdev_reread_part()
166 	if (!disk_part_scan_enabled(disk) || bdev != bdev->bd_contains)  in __blkdev_reread_part()
171 	lockdep_assert_held(&bdev->bd_mutex);  in __blkdev_reread_part()
173 	return rescan_partitions(disk, bdev);  in __blkdev_reread_part()
188 int blkdev_reread_part(struct block_device *bdev)  in blkdev_reread_part()  argument
192 	mutex_lock(&bdev->bd_mutex);  in blkdev_reread_part()
193 	res = __blkdev_reread_part(bdev);  in blkdev_reread_part()
194 	mutex_unlock(&bdev->bd_mutex);  in blkdev_reread_part()
200 static int blk_ioctl_discard(struct block_device *bdev, fmode_t mode,  in blk_ioctl_discard()  argument
205 	struct request_queue *q = bdev_get_queue(bdev);  in blk_ioctl_discard()
206 	struct address_space *mapping = bdev->bd_inode->i_mapping;  in blk_ioctl_discard()
226 	if (start + len > i_size_read(bdev->bd_inode))  in blk_ioctl_discard()
229 	return blkdev_issue_discard(bdev, start >> 9, len >> 9,  in blk_ioctl_discard()
233 static int blk_ioctl_zeroout(struct block_device *bdev, fmode_t mode,  in blk_ioctl_zeroout()  argument
254 	if (end >= (uint64_t)i_size_read(bdev->bd_inode))  in blk_ioctl_zeroout()
260 	mapping = bdev->bd_inode->i_mapping;  in blk_ioctl_zeroout()
263 	return blkdev_issue_zeroout(bdev, start >> 9, len >> 9, GFP_KERNEL,  in blk_ioctl_zeroout()
297 int __blkdev_driver_ioctl(struct block_device *bdev, fmode_t mode,  in __blkdev_driver_ioctl()  argument
300 	struct gendisk *disk = bdev->bd_disk;  in __blkdev_driver_ioctl()
303 		return disk->fops->ioctl(bdev, mode, cmd, arg);  in __blkdev_driver_ioctl()
314 static int blkdev_pr_register(struct block_device *bdev,  in blkdev_pr_register()  argument
317 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_register()
329 	return ops->pr_register(bdev, reg.old_key, reg.new_key, reg.flags);  in blkdev_pr_register()
332 static int blkdev_pr_reserve(struct block_device *bdev,  in blkdev_pr_reserve()  argument
335 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_reserve()
347 	return ops->pr_reserve(bdev, rsv.key, rsv.type, rsv.flags);  in blkdev_pr_reserve()
350 static int blkdev_pr_release(struct block_device *bdev,  in blkdev_pr_release()  argument
353 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_release()
365 	return ops->pr_release(bdev, rsv.key, rsv.type);  in blkdev_pr_release()
368 static int blkdev_pr_preempt(struct block_device *bdev,  in blkdev_pr_preempt()  argument
371 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_preempt()
383 	return ops->pr_preempt(bdev, p.old_key, p.new_key, p.type, abort);  in blkdev_pr_preempt()
386 static int blkdev_pr_clear(struct block_device *bdev,  in blkdev_pr_clear()  argument
389 	const struct pr_ops *ops = bdev->bd_disk->fops->pr_ops;  in blkdev_pr_clear()
401 	return ops->pr_clear(bdev, c.key);  in blkdev_pr_clear()
424 static int blkdev_flushbuf(struct block_device *bdev, fmode_t mode,  in blkdev_flushbuf()  argument
432 	ret = __blkdev_driver_ioctl(bdev, mode, cmd, arg);  in blkdev_flushbuf()
436 	fsync_bdev(bdev);  in blkdev_flushbuf()
437 	invalidate_bdev(bdev);  in blkdev_flushbuf()
441 static int blkdev_roset(struct block_device *bdev, fmode_t mode,  in blkdev_roset()  argument
449 	ret = __blkdev_driver_ioctl(bdev, mode, cmd, arg);  in blkdev_roset()
454 	set_device_ro(bdev, n);  in blkdev_roset()
458 static int blkdev_getgeo(struct block_device *bdev,  in blkdev_getgeo()  argument
461 	struct gendisk *disk = bdev->bd_disk;  in blkdev_getgeo()
475 	geo.start = get_start_sect(bdev);  in blkdev_getgeo()
476 	ret = disk->fops->getgeo(bdev, &geo);  in blkdev_getgeo()
485 static int blkdev_bszset(struct block_device *bdev, fmode_t mode,  in blkdev_bszset()  argument
498 		bdgrab(bdev);  in blkdev_bszset()
499 		if (blkdev_get(bdev, mode | FMODE_EXCL, &bdev) < 0)  in blkdev_bszset()
503 	ret = set_blocksize(bdev, n);  in blkdev_bszset()
505 		blkdev_put(bdev, mode | FMODE_EXCL);  in blkdev_bszset()
512 int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,  in blkdev_ioctl()  argument
521 		return blkdev_flushbuf(bdev, mode, cmd, arg);  in blkdev_ioctl()
523 		return blkdev_roset(bdev, mode, cmd, arg);  in blkdev_ioctl()
525 		return blk_ioctl_discard(bdev, mode, arg, 0);  in blkdev_ioctl()
527 		return blk_ioctl_discard(bdev, mode, arg,  in blkdev_ioctl()
530 		return blk_ioctl_zeroout(bdev, mode, arg);  in blkdev_ioctl()
532 		return blkdev_report_zones_ioctl(bdev, mode, cmd, arg);  in blkdev_ioctl()
534 		return blkdev_reset_zones_ioctl(bdev, mode, cmd, arg);  in blkdev_ioctl()
536 		return blkdev_getgeo(bdev, argp);  in blkdev_ioctl()
541 		return put_long(arg, (bdev->bd_bdi->ra_pages*PAGE_SIZE) / 512);  in blkdev_ioctl()
543 		return put_int(arg, bdev_read_only(bdev) != 0);  in blkdev_ioctl()
545 		return put_int(arg, block_size(bdev));  in blkdev_ioctl()
547 		return put_int(arg, bdev_logical_block_size(bdev));  in blkdev_ioctl()
549 		return put_uint(arg, bdev_physical_block_size(bdev));  in blkdev_ioctl()
551 		return put_uint(arg, bdev_io_min(bdev));  in blkdev_ioctl()
553 		return put_uint(arg, bdev_io_opt(bdev));  in blkdev_ioctl()
555 		return put_int(arg, bdev_alignment_offset(bdev));  in blkdev_ioctl()
560 				    queue_max_sectors(bdev_get_queue(bdev)));  in blkdev_ioctl()
563 		return put_ushort(arg, !blk_queue_nonrot(bdev_get_queue(bdev)));  in blkdev_ioctl()
568 		bdev->bd_bdi->ra_pages = (arg * 512) / PAGE_SIZE;  in blkdev_ioctl()
571 		return blkdev_bszset(bdev, mode, argp);  in blkdev_ioctl()
573 		return blkpg_ioctl(bdev, argp);  in blkdev_ioctl()
575 		return blkdev_reread_part(bdev);  in blkdev_ioctl()
577 		size = i_size_read(bdev->bd_inode);  in blkdev_ioctl()
582 		return put_u64(arg, i_size_read(bdev->bd_inode));  in blkdev_ioctl()
587 		return blk_trace_ioctl(bdev, cmd, argp);  in blkdev_ioctl()
589 		return blkdev_pr_register(bdev, argp);  in blkdev_ioctl()
591 		return blkdev_pr_reserve(bdev, argp);  in blkdev_ioctl()
593 		return blkdev_pr_release(bdev, argp);  in blkdev_ioctl()
595 		return blkdev_pr_preempt(bdev, argp, false);  in blkdev_ioctl()
597 		return blkdev_pr_preempt(bdev, argp, true);  in blkdev_ioctl()
599 		return blkdev_pr_clear(bdev, argp);  in blkdev_ioctl()
601 		return __blkdev_driver_ioctl(bdev, mode, cmd, arg);  in blkdev_ioctl()