getTotalBytes接口中：
/frameworks/base/services/usage/java/com/android/server/usage/StorageStatsService.java
if (volumeUuid == StorageManager.UUID_PRIVATE_INTERNAL) {
- return FileUtils.roundStorageSize(mStorage.getPrimaryStorageSize());
+ return mStorage.getPrimaryStorageSize();
} else {
final VolumeInfo vol = mStorage.findVolumeByUuid(volumeUuid);
- return FileUtils.roundStorageSize(vol.disk.size);
+ return vol.disk.size;
}
}