2 /* getroot.c: get the root dentry for an NFS mount
36  * Set the superblock root dentry.
41 	/* The mntroot acts as the dummy root dentry for this superblock */  in nfs_superblock_set_dummy_root()
65  * get an NFS2/NFS3 root dentry from the root filehandle
72 	struct dentry *root;  in nfs_get_root()  local
82 	/* get the actual root for this mount */  in nfs_get_root()
90 		nfs_errorf(fc, "NFS: Couldn't getattr on root");  in nfs_get_root()
96 		dprintk("nfs_get_root: get root inode failed\n");  in nfs_get_root()
98 		nfs_errorf(fc, "NFS: Couldn't get root inode");  in nfs_get_root()
106 	/* root dentries normally start off anonymous and get spliced in later  in nfs_get_root()
108 	 * exists, we'll pick it up at this point and use it as the root  in nfs_get_root()
110 	root = d_obtain_root(inode);  in nfs_get_root()
111 	if (IS_ERR(root)) {  in nfs_get_root()
112 		dprintk("nfs_get_root: get root dentry failed\n");  in nfs_get_root()
113 		error = PTR_ERR(root);  in nfs_get_root()
114 		nfs_errorf(fc, "NFS: Couldn't get root dentry");  in nfs_get_root()
118 	security_d_instantiate(root, inode);  in nfs_get_root()
119 	spin_lock(&root->d_lock);  in nfs_get_root()
120 	if (IS_ROOT(root) && !root->d_fsdata &&  in nfs_get_root()
121 	    !(root->d_flags & DCACHE_NFSFS_RENAMED)) {  in nfs_get_root()
122 		root->d_fsdata = name;  in nfs_get_root()
125 	spin_unlock(&root->d_lock);  in nfs_get_root()
126 	fc->root = root;  in nfs_get_root()
130 		if (d_inode(fc->root)->i_fop != &nfs_dir_operations) {  in nfs_get_root()
161 	dput(fc->root);  in nfs_get_root()
162 	fc->root = NULL;  in nfs_get_root()