I have a question,in linux, is there any method to mount a block of memory as a filesystem?For example, in X86 architecture, when power on, I reserve a  block of memory about 8Mbytes, and then when linux startup, I mount this block of memory as a filesystem and then read and write file to the file system ? What will be the fs type? 
Is there any method to mount a block of memory as a filesystem in linux?
kernel;filesystems;memory