Rating: 

well.

As many others have pointed out, there have been many changes to the

Kernel versions after 2.1 and the book's source code examples are

mostly for version 2.0.

If you are using this book with a 2.2 or later kernel (Redhat's

version 7 binary is version 2.2 and the source is 2.4), be sure to

read "Chapter 17 Recent Development's" BEFORE you try the code

examples in Chapter 2. It will save you alot of time trying to

find the 2.0 kernel features such as the symtab_begin.h and symtab_end.h

header files.