memory barriers cont

1.linux kernel
http://www.mjmwired.net/kernel/Documentation/memory-barriers.txt
2.memory barrier good article
http://docs.google.com/viewer?a=v&q=cache:S9JEE_dIcGAJ:citeseerx.ist.psu.edu/viewdoc/download%3Fdoi%3D10.1.1.152.5245%26rep%3Drep1%26type%3Dpdf+memory+barriers&hl=en&pid=bl&srcid=ADGEESh5AL6JDRzYXbpein1NW-r5Uvq7ADoDeBi_kHvvcq64wzhwIhwAbBQCWfkUPz_XcxyD_isWsjCeeRjoqpDcYIpNIdYYMVai0Dc3W3Pj-38yUX9O7I1fkDdQFJ2G9Dwjiv9Wzzz2&sig=AHIEtbSZkOLsDotrYKqhAIgWi2DF9un-zg