How are linux buffers implemented?

How are linux buffers implemented?

References

Reference NO 1

http://stackoverflow.com/questions/15193998/how-are-linux-buffers-implemented

Reference NO 2

http://my.safaribooksonline.com/book/operating-systems-and-server-administration/linux/9780470343432/page-and-buffer-cache/implementation_of_the_buffer_cache

Reference NO 3

http://answers.yahoo.com/question/index?qid=20080208133153AAit39R

Reference NO 4

http://www.ece.virginia.edu/cheetah/documents/papers/TCPlinux.pdf

Reference NO 5

http://www.tldp.org/LDP/khg/HyperNews/get/net/net-intro.html

Reference NO 6

http://random-techbits.blogspot.com/2012/06/linux-buffer-vs-cache-explained.html

Reference NO 7

http://www.linuxjournal.com/article/1312

Reference NO 8

http://www.cs.unh.edu/cnrg/people/gherrin/linux-net.html