tree f7dc037b9b1a90511751532be5ebc47c820ed407
parent a9933cea7a1d80dd9efae9f1acd857f5dce742b9
author J. Bruce Fields <bfields@fieldses.org> 1163537500 -0500
committer J. Bruce Fields <bfields@citi.umich.edu> 1184800487 -0400

locks: provide a file lease method enabling cluster-coherent leases

Currently leases are only kept locally, so there's no way for a distributed
filesystem to enforce them against multiple clients.  We're particularly
interested in the case of nfsd exporting a cluster filesystem, in which
case nfsd needs cluster-coherent leases in order to implement delegations
correctly.

Also add some documentation.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>