tree cfc22288674c170a1699b78fa752baaa82071aa4
parent 9e1a37dad4f3b9f1d36d9fd27021bbd67fb8c85f
author Aurelien Aptel <aaptel@suse.com> 1537492225 -0700
committer Steve French <stfrench@microsoft.com> 1540347365 -0500

CIFS: make 'nodfs' mount opt a superblock flag

tcon->Flags is only used by SMB1 code and changing it is not permanent
(you lose the setting on tcon reconnect).

* Move the setting to superblock flags (per mount-points).
* Make automount callback exit early when flag present
* Make dfs resolving happening in mount syscall exit early if flag present

Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Acked-by: Pavel Shilovsky <pshilov@microsoft.com>