12 static int blkpg_ioctl(struct block_device *bdev, struct blkpg_ioctl_arg __user *arg)  in blkpg_ioctl()  argument
29 	disk = bdev->bd_disk;  in blkpg_ioctl()
30 	if (bdev != bdev->bd_contains)  in blkpg_ioctl()
48 			mutex_lock(&bdev->bd_mutex);  in blkpg_ioctl()
57 					mutex_unlock(&bdev->bd_mutex);  in blkpg_ioctl()
66 			mutex_unlock(&bdev->bd_mutex);  in blkpg_ioctl()
88 			mutex_lock_nested(&bdev->bd_mutex, 1);  in blkpg_ioctl()
90 			mutex_unlock(&bdev->bd_mutex);  in blkpg_ioctl()
116 			mutex_lock_nested(&bdev->bd_mutex, 1);  in blkpg_ioctl()
119 				mutex_unlock(&bdev->bd_mutex);  in blkpg_ioctl()
134 					mutex_unlock(&bdev->bd_mutex);  in blkpg_ioctl()
144 			mutex_unlock(&bdev->bd_mutex);  in blkpg_ioctl()
153 static int blkdev_reread_part(struct block_device *bdev)  in blkdev_reread_part()  argument
155 	struct gendisk *disk = bdev->bd_disk;  in blkdev_reread_part()
158 	if (!disk_part_scan_enabled(disk) || bdev != bdev->bd_contains)  in blkdev_reread_part()
162 	if (!mutex_trylock(&bdev->bd_mutex))  in blkdev_reread_part()
164 	res = rescan_partitions(disk, bdev);  in blkdev_reread_part()
165 	mutex_unlock(&bdev->bd_mutex);  in blkdev_reread_part()
169 static int blk_ioctl_discard(struct block_device *bdev, uint64_t start,  in blk_ioctl_discard()  argument
181 	if (start + len > (i_size_read(bdev->bd_inode) >> 9))  in blk_ioctl_discard()
185 	return blkdev_issue_discard(bdev, start, len, GFP_KERNEL, flags);  in blk_ioctl_discard()
188 static int blk_ioctl_zeroout(struct block_device *bdev, uint64_t start,  in blk_ioctl_zeroout()  argument
198 	if (start + len > (i_size_read(bdev->bd_inode) >> 9))  in blk_ioctl_zeroout()
201 	return blkdev_issue_zeroout(bdev, start, len, GFP_KERNEL, false);  in blk_ioctl_zeroout()
234 int __blkdev_driver_ioctl(struct block_device *bdev, fmode_t mode,  in __blkdev_driver_ioctl()  argument
237 	struct gendisk *disk = bdev->bd_disk;  in __blkdev_driver_ioctl()
240 		return disk->fops->ioctl(bdev, mode, cmd, arg);  in __blkdev_driver_ioctl()
274 int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,  in blkdev_ioctl()  argument
277 	struct gendisk *disk = bdev->bd_disk;  in blkdev_ioctl()
288 		ret = __blkdev_driver_ioctl(bdev, mode, cmd, arg);  in blkdev_ioctl()
292 		fsync_bdev(bdev);  in blkdev_ioctl()
293 		invalidate_bdev(bdev);  in blkdev_ioctl()
297 		ret = __blkdev_driver_ioctl(bdev, mode, cmd, arg);  in blkdev_ioctl()
304 		set_device_ro(bdev, n);  in blkdev_ioctl()
317 		return blk_ioctl_discard(bdev, range[0], range[1],  in blkdev_ioctl()
329 		return blk_ioctl_zeroout(bdev, range[0], range[1]);  in blkdev_ioctl()
345 		geo.start = get_start_sect(bdev);  in blkdev_ioctl()
346 		ret = disk->fops->getgeo(bdev, &geo);  in blkdev_ioctl()
358 		bdi = blk_get_backing_dev_info(bdev);  in blkdev_ioctl()
361 		return put_int(arg, bdev_read_only(bdev) != 0);  in blkdev_ioctl()
363 		return put_int(arg, block_size(bdev));  in blkdev_ioctl()
365 		return put_int(arg, bdev_logical_block_size(bdev));  in blkdev_ioctl()
367 		return put_uint(arg, bdev_physical_block_size(bdev));  in blkdev_ioctl()
369 		return put_uint(arg, bdev_io_min(bdev));  in blkdev_ioctl()
371 		return put_uint(arg, bdev_io_opt(bdev));  in blkdev_ioctl()
373 		return put_int(arg, bdev_alignment_offset(bdev));  in blkdev_ioctl()
375 		return put_uint(arg, bdev_discard_zeroes_data(bdev));  in blkdev_ioctl()
378 				    queue_max_sectors(bdev_get_queue(bdev)));  in blkdev_ioctl()
381 		return put_ushort(arg, !blk_queue_nonrot(bdev_get_queue(bdev)));  in blkdev_ioctl()
386 		bdi = blk_get_backing_dev_info(bdev);  in blkdev_ioctl()
398 			bdgrab(bdev);  in blkdev_ioctl()
399 			if (blkdev_get(bdev, mode | FMODE_EXCL, &bdev) < 0)  in blkdev_ioctl()
402 		ret = set_blocksize(bdev, n);  in blkdev_ioctl()
404 			blkdev_put(bdev, mode | FMODE_EXCL);  in blkdev_ioctl()
407 		ret = blkpg_ioctl(bdev, (struct blkpg_ioctl_arg __user *) arg);  in blkdev_ioctl()
410 		ret = blkdev_reread_part(bdev);  in blkdev_ioctl()
413 		size = i_size_read(bdev->bd_inode);  in blkdev_ioctl()
418 		return put_u64(arg, i_size_read(bdev->bd_inode));  in blkdev_ioctl()
423 		ret = blk_trace_ioctl(bdev, cmd, (char __user *) arg);  in blkdev_ioctl()
426 		ret = __blkdev_driver_ioctl(bdev, mode, cmd, arg);  in blkdev_ioctl()