diff options
| -rw-r--r-- | fs/nfs/inode.c | 37 |
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); |