title: does linux 3.7.1 support ext2?
body: <p>I'm conducting a lab recently and I just found that linux 3.7.1 has no /include/linux/magic.h.  Does this mean that linux 3.7.1 not support ext2? If I really need to do some modification in the magic.h, for example, change the <code>#define EXT2_SUPER_MAGIC 0xEF53</code> to <code>#define EXT2_SUPER_MAGIC 0X6666</code>, and I have another file which need this header file, what should I do?</p>