page cache和buffer cache 图解

http://www.cnblogs.com/yrpen/p/3777963.html

http://www.cnblogs.com/hustcat/archive/2011/10/27/2226995.html

http://www.cnblogs.com/hustcat/archive/2011/10/27/2226995.html

http://blog.csdn.net/dianhuiren/article/details/7543886

http://blog.chinaunix.net/uid-9620812-id-1643033.html

http://www.ibm.com/developerworks/cn/linux/l-cache/