cifs: add cifs_sb_master_tcon and convert some callers to use it

At mount time, we'll always need to create a tcon that will serve as a
template for others that are associated with the mount. This tcon is
known as the "master" tcon.

In some cases, we'll need to use that tcon regardless of who's accessing
the mount. Add an accessor function for the master tcon and go ahead and
switch the appropriate places to use it.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index b4bacea54626..f6a3091c2874 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -3025,9 +3025,9 @@ cifs_umount(struct super_block *sb, struct cifs_sb_info *cifs_sb)
 {
         int rc = 0;
         char *tmp;
+        struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb);
 
-        if (cifs_sb_tcon(cifs_sb))
-                cifs_put_tcon(cifs_sb_tcon(cifs_sb));
+        cifs_put_tcon(tcon);
 
         cifs_sb->ptcon = NULL;
         tmp = cifs_sb->prepath;