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, 3 insertions, 3 deletions

diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index b9624abb7261..898d2a5cfad2 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -222,7 +222,7 @@ cifs_statfs(struct dentry *dentry, struct kstatfs *buf)
 {
         struct super_block *sb = dentry->d_sb;
         struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
-        struct cifsTconInfo *tcon = cifs_sb_tcon(cifs_sb);
+        struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb);
         int rc = -EOPNOTSUPP;
         int xid;
 
@@ -364,7 +364,7 @@ static int
 cifs_show_options(struct seq_file *s, struct vfsmount *m)
 {
         struct cifs_sb_info *cifs_sb = CIFS_SB(m->mnt_sb);
-        struct cifsTconInfo *tcon = cifs_sb_tcon(cifs_sb);
+        struct cifsTconInfo *tcon = cifs_sb_master_tcon(cifs_sb);
         struct sockaddr *srcaddr;
         srcaddr = (struct sockaddr *)&tcon->ses->server->srcaddr;
 
@@ -455,7 +455,7 @@ static void cifs_umount_begin(struct super_block *sb)
         if (cifs_sb == NULL)
                 return;
 
-        tcon = cifs_sb_tcon(cifs_sb);
+        tcon = cifs_sb_master_tcon(cifs_sb);
 
         read_lock(&cifs_tcp_ses_lock);
         if ((tcon->tc_count > 1) || (tcon->tidStatus == CifsExiting)) {