1. A method for managing global cache coherency and reducing contention and messaging traffic in a distributed shared caching for clustered file systems (CFS), the CFS having a file access component that includes a cache and a distributed shared memory (DSM) module in a computing environment, the method comprising: managing the access permissions to data segment space of the data segments shared between a cluster of nodes by using the file access component; partitioning CFS disk space into a plurality of regions and disk objects into a plurality of groups; assigning each of the plurality of regions and the plurality of groups to a CFS agent residing on each one of the cluster of nodes; modifying, by a CFS agent, those of the plurality of regions and the plurality of objects assigned to the CFS agent; and modifying, at an increased frequency, by the CFS agent, those of the plurality of regions and the plurality of objects assigned to the CFS agent as compared to those of the plurality of regions and the plurality of objects that are not assigned to the CFS agent.