From: Al Viro <[email protected]>

That will allow to get rid of passing those references around in
quite a few places.  Moreover, that will allow to merge xdev and
remote file_system_type.

Reviewed-by: David Howells <[email protected]>
Signed-off-by: Al Viro <[email protected]>
---
 fs/nfs/internal.h  | 1 +
 fs/nfs/namespace.c | 6 +++---
 fs/nfs/nfs4super.c | 1 +
 fs/nfs/super.c     | 1 +
 4 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index eeb54b45875c..0c42cf685d4b 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -150,6 +150,7 @@ struct nfs_mount_info {
        struct nfs_clone_mount *cloned;
        struct nfs_server *server;
        struct nfs_fh *mntfh;
+       struct nfs_subversion *nfs_mod;
 };
 
 extern int nfs_mount(struct nfs_mount_request *info);
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index 7c78e6956639..0d0587ed7d94 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -233,8 +233,8 @@ struct vfsmount *nfs_do_submount(struct dentry *dentry, 
struct nfs_fh *fh,
                .set_security = nfs_clone_sb_security,
                .cloned = &mountdata,
                .mntfh = fh,
+               .nfs_mod = NFS_SB(sb)->nfs_client->cl_nfs_mod,
        };
-       struct nfs_subversion *nfs_mod = NFS_SB(sb)->nfs_client->cl_nfs_mod;
        struct nfs_server *server;
        struct vfsmount *mnt;
        char *page = (char *) __get_free_page(GFP_USER);
@@ -243,8 +243,8 @@ struct vfsmount *nfs_do_submount(struct dentry *dentry, 
struct nfs_fh *fh,
        if (page == NULL)
                return ERR_PTR(-ENOMEM);
 
-       server = nfs_mod->rpc_ops->clone_server(NFS_SB(sb), fh,
-                                               fattr, authflavor);
+       server = mount_info.nfs_mod->rpc_ops->clone_server(NFS_SB(sb), fh,
+                                                          fattr, authflavor);
        if (IS_ERR(server))
                return ERR_CAST(server);
 
diff --git a/fs/nfs/nfs4super.c b/fs/nfs/nfs4super.c
index 91ba1b6741dc..88d83cab8e9b 100644
--- a/fs/nfs/nfs4super.c
+++ b/fs/nfs/nfs4super.c
@@ -248,6 +248,7 @@ static struct dentry *nfs4_referral_mount(struct 
file_system_type *fs_type,
                .fill_super = nfs_fill_super,
                .set_security = nfs_clone_sb_security,
                .cloned = data,
+               .nfs_mod = &nfs_v4,
        };
        struct dentry *res;
 
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 7fc354207347..2a6b4e4b0a2d 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -2736,6 +2736,7 @@ struct dentry *nfs_fs_mount(struct file_system_type 
*fs_type,
                mntroot = ERR_CAST(nfs_mod);
                goto out;
        }
+       mount_info.nfs_mod = nfs_mod;
 
        mntroot = nfs_mod->rpc_ops->try_mount(flags, dev_name, &mount_info, 
nfs_mod);
 
-- 
2.17.2

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