Merge tag 'v7.0-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6

Merge tag 'v7.0-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull smb client fixes from Steve French:

 - Fix potential oops on open failure

 - Fix unmount to better free deferred closes

 - Use proper constant-time MAC comparison function

 - Two buffer allocation size fixes

 - Two minor cleanups

 - make SMB2 kunit tests a distinct module

* tag 'v7.0-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  smb: client: fix oops due to uninitialised var in smb2_unlink()
  cifs: open files should not hold ref on superblock
  smb: client: Compare MACs in constant time
  smb/client: remove unused SMB311_posix_query_info()
  smb/client: fix buffer size for smb311_posix_qinfo in SMB311_posix_query_info()
  smb/client: fix buffer size for smb311_posix_qinfo in smb2_compound_op()
  smb: update some doc references
  smb/client: make SMB2 maperror KUnit tests a separate module