关于linux中匿名映射内存的问题

I'm playing around with the idea of using the virtual memory system to allow me to do transparent data conversion (eg int to float) for some numeric data stuff I've got. The basic idea is that the library I'm writing mmaps the data file you want, and at the same time mmaps an anonymous region of an appropriate size to hold the converted data, and this pointer is returned to the user.I'm playing around with the idea of using the v