CIFS: remove bad_network_name flag

commit a0918f1ce6a43ac980b42b300ec443c154970979 upstream.

STATUS_BAD_NETWORK_NAME can be received during node failover,
causing the flag to be set and making the reconnect thread
always unsuccessful, thereafter.

Once the only place where it is set is removed, the remaining
bits are rendered moot.

Removing it does not prevent "mount" from failing when a non
existent share is passed.

What happens when the share really ceases to exist while the
share is mounted is undefined now as much as it was before.

Signed-off-by: Germano Percossi <germano.percossi@citrix.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2 files changed, 0 insertions, 6 deletions

diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 203287f86525..94661cf77ae8 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -930,7 +930,6 @@ struct cifs_tcon {
         bool use_persistent:1; /* use persistent instead of durable handles */
 #ifdef CONFIG_CIFS_SMB2
         bool print:1;           /* set if connection to printer share */
-        bool bad_network_name:1; /* set if ret status STATUS_BAD_NETWORK_NAME */
         __le32 capabilities;
         __u32 share_flags;
         __u32 maximal_access;
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 7080dac3592c..802185386851 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -1084,9 +1084,6 @@ SMB2_tcon(const unsigned int xid, struct cifs_ses *ses, const char *tree,
         else
                 return -EIO;
 
-        if (tcon && tcon->bad_network_name)
-                return -ENOENT;
-
         if ((tcon && tcon->seal) &&
             ((ses->server->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION) == 0)) {
                 cifs_dbg(VFS, "encryption requested but no server support");
@@ -1188,8 +1185,6 @@ tcon_exit:
 tcon_error_exit:
         if (rsp->hdr.Status == STATUS_BAD_NETWORK_NAME) {
                 cifs_dbg(VFS, "BAD_NETWORK_NAME: %s\n", tree);
-                if (tcon)
-                        tcon->bad_network_name = true;
         }
         goto tcon_exit;
 }