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-rw-r--r--fs/nfs/inode.c37
1 files changed, 26 insertions, 11 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 648f593de0f..550a84dd41a 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -2444,6 +2444,20 @@ static struct file_system_type clone_nfs4_fs_type = {
.fs_flags = FS_ODD_RENAME|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
};
+static struct vfsmount *nfs_do_clone_mount(struct nfs_server *server, char *devname, struct nfs_clone_mount *mountdata)
+{
+ struct vfsmount *mnt = NULL;
+ switch (server->rpc_ops->version) {
+ case 2:
+ case 3:
+ mnt = vfs_kern_mount(&clone_nfs_fs_type, 0, devname, &mountdata);
+ break;
+ case 4:
+ mnt = vfs_kern_mount(&clone_nfs4_fs_type, 0, devname, mountdata);
+ }
+ return mnt;
+}
+
#define nfs4_init_once(nfsi) \
do { \
INIT_LIST_HEAD(&(nfsi)->open_states); \
@@ -2477,6 +2491,10 @@ static inline void unregister_nfs4fs(void)
do { } while (0)
#define register_nfs4fs() (0)
#define unregister_nfs4fs()
+static struct vfsmount *nfs_do_clone_mount(struct nfs_server *server, char *devname, struct nfs_clone_mount *mountdata)
+{
+ return vfs_kern_mount(&clone_nfs_fs_type, 0, devname, &mountdata);
+}
#endif
static inline char *nfs_devname(const struct vfsmount *mnt_parent,
@@ -2517,17 +2535,7 @@ struct vfsmount *nfs_do_submount(const struct vfsmount *mnt_parent,
mnt = (struct vfsmount *)devname;
if (IS_ERR(devname))
goto free_page;
- switch (NFS_SB(mnt_parent->mnt_sb)->rpc_ops->version) {
- case 2:
- case 3:
- mnt = vfs_kern_mount(&clone_nfs_fs_type, 0, devname, &mountdata);
- break;
- case 4:
- mnt = vfs_kern_mount(&clone_nfs4_fs_type, 0, devname, &mountdata);
- break;
- default:
- BUG();
- }
+ mnt = nfs_do_clone_mount(NFS_SB(mnt_parent->mnt_sb), devname, &mountdata);
free_page:
free_page((unsigned long)page);
out:
@@ -2535,6 +2543,7 @@ out:
return mnt;
}
+#ifdef CONFIG_NFS_V4
/* Check if fs_root is valid */
static inline char *nfs4_pathname_string(struct nfs4_pathname *pathname, char *buffer, ssize_t buflen)
{
@@ -2789,6 +2798,12 @@ out:
dprintk("%s: done\n", __FUNCTION__);
return mnt;
}
+#else
+struct vfsmount *nfs_do_refmount(const struct vfsmount *mnt_parent, struct dentry *dentry)
+{
+ return ERR_PTR(-ENOENT);
+}
+#endif
extern int nfs_init_nfspagecache(void);
extern void nfs_destroy_nfspagecache(void);