allow VFS access to write stability parameters. chimera VFS always returns FILE_SYNC, as before (issue #12)
Merge pull request #13 from radai-rosenblatt/write-stability

allow VFS access to write stability parameters. chimera VFS always returns FILE_SYNC, as before (issue #12)
initial implementation of nfs3 COMMIT

added a commit op to VirtualFileSystem interface.
for chimera commit is a nop since it should never be called (all IO is done FILE_SYNC)
for PseudoFS commit is a pass-through (nfs3 rfc does not include access/permission check for commit)
for VfsCache commit is also pass-through (same as write)
Merge pull request #14 from radai-rosenblatt/master

initial implementation of nfs3 COMMIT
fix NPE in nfs3.commit
Merge pull request #15 from radai-rosenblatt/master

fix NPE in nfs3.commit
vfs-cache: add a possibility to cache FsStat results

Acked-by: Dmitry Litvintsev
Target: master, 0.9