public static long blockEnd(int blockSize, long position) {
        long ceil = (position + blockSize - 1) / blockSize;
        return ceil * blockSize;
    }
Static variant of {@link #blockEnd(int)}.

@param blockSize
@param position
@return The smallest number greater than or equal to <tt>position</tt>
which is a multiple of the <tt>blockSize</tt>
s3stream/src/main/java/com/automq/stream/thirdparty/moe/cnkirito/kdio/DirectIOLib.java