Similar to the "cache=ro" patch but for the read write case ...

    smb3: add mount option to allow RW caching of share accessed by
only 1 client

    If a share is known to be only to be accessed by one client, we
    can aggressively cache writes not just reads to it.

    Add "cache=" option (cache=singleclient) for mounting read write shares
    (that will not be read or written to from other clients while we have
    it mounted) in order to improve performance.



-- 
Thanks,

Steve