Android 6.0 EMMC显示为16GB

应用场景：仅限调用StatFs.java获取才能实现此功能
frameworksbasecorejavaandroidosStatFs.java

import android.os.Environment;

	String mPath = "";
	String ePath = "";

 public StatFs(String path) {
        mStat = doStat(path);
++		mPath = path;
++		ePath = Environment.getExternalStorageDirectory().getPath();
    }

 public long getBlockCountLong() {
++		if(mPath.equals(ePath)){
++			return 4194304;
++		}else{
			return mStat.f_blocks;
++		}
    }