Merge tag '5.7-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6

Merge tag '5.7-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "Five cifs/smb3 fixes:two for DFS reconnect failover, one lease fix for
  stable and the others to fix a missing spinlock during reconnect"

* tag '5.7-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: fix uninitialised lease_key in open_shroot()
  cifs: ensure correct super block for DFS reconnect
  cifs: do not share tcons with DFS
  cifs: minor update to comments around the cifs_tcp_ses_lock mutex
  cifs: protect updating server->dstaddr with a spinlock