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-rw-r--r--fs/nfs/namespace.c34
1 files changed, 24 insertions, 10 deletions
diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index 86b3169c8ca..77b00684894 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -2,6 +2,7 @@
* linux/fs/nfs/namespace.c
*
* Copyright (C) 2005 Trond Myklebust <Trond.Myklebust@netapp.com>
+ * - Modified by David Howells <dhowells@redhat.com>
*
* NFS namespace
*/
@@ -28,6 +29,7 @@ int nfs_mountpoint_expiry_timeout = 500 * HZ;
/*
* nfs_path - reconstruct the path given an arbitrary dentry
* @base - arbitrary string to prepend to the path
+ * @droot - pointer to root dentry for mountpoint
* @dentry - pointer to dentry
* @buffer - result buffer
* @buflen - length of buffer
@@ -38,7 +40,9 @@ int nfs_mountpoint_expiry_timeout = 500 * HZ;
* This is mainly for use in figuring out the path on the
* server side when automounting on top of an existing partition.
*/
-char *nfs_path(const char *base, const struct dentry *dentry,
+char *nfs_path(const char *base,
+ const struct dentry *droot,
+ const struct dentry *dentry,
char *buffer, ssize_t buflen)
{
char *end = buffer+buflen;
@@ -47,7 +51,7 @@ char *nfs_path(const char *base, const struct dentry *dentry,
*--end = '\0';
buflen--;
spin_lock(&dcache_lock);
- while (!IS_ROOT(dentry)) {
+ while (!IS_ROOT(dentry) && dentry != droot) {
namelen = dentry->d_name.len;
buflen -= namelen + 1;
if (buflen < 0)
@@ -96,15 +100,18 @@ static void * nfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd)
struct nfs_fattr fattr;
int err;
+ dprintk("--> nfs_follow_mountpoint()\n");
+
BUG_ON(IS_ROOT(dentry));
dprintk("%s: enter\n", __FUNCTION__);
dput(nd->dentry);
nd->dentry = dget(dentry);
- if (d_mountpoint(nd->dentry))
- goto out_follow;
+
/* Look it up again */
parent = dget_parent(nd->dentry);
- err = server->rpc_ops->lookup(parent->d_inode, &nd->dentry->d_name, &fh, &fattr);
+ err = server->nfs_client->rpc_ops->lookup(parent->d_inode,
+ &nd->dentry->d_name,
+ &fh, &fattr);
dput(parent);
if (err != 0)
goto out_err;
@@ -132,6 +139,8 @@ static void * nfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd)
schedule_delayed_work(&nfs_automount_task, nfs_mountpoint_expiry_timeout);
out:
dprintk("%s: done, returned %d\n", __FUNCTION__, err);
+
+ dprintk("<-- nfs_follow_mountpoint() = %d\n", err);
return ERR_PTR(err);
out_err:
path_release(nd);
@@ -172,22 +181,23 @@ void nfs_release_automount_timer(void)
/*
* Clone a mountpoint of the appropriate type
*/
-static struct vfsmount *nfs_do_clone_mount(struct nfs_server *server, char *devname,
+static struct vfsmount *nfs_do_clone_mount(struct nfs_server *server,
+ const char *devname,
struct nfs_clone_mount *mountdata)
{
#ifdef CONFIG_NFS_V4
struct vfsmount *mnt = NULL;
- switch (server->rpc_ops->version) {
+ switch (server->nfs_client->cl_nfsversion) {
case 2:
case 3:
- mnt = vfs_kern_mount(&clone_nfs_fs_type, 0, devname, mountdata);
+ mnt = vfs_kern_mount(&nfs_xdev_fs_type, 0, devname, mountdata);
break;
case 4:
- mnt = vfs_kern_mount(&clone_nfs4_fs_type, 0, devname, mountdata);
+ mnt = vfs_kern_mount(&nfs4_xdev_fs_type, 0, devname, mountdata);
}
return mnt;
#else
- return vfs_kern_mount(&clone_nfs_fs_type, 0, devname, mountdata);
+ return vfs_kern_mount(&nfs_xdev_fs_type, 0, devname, mountdata);
#endif
}
@@ -213,6 +223,8 @@ struct vfsmount *nfs_do_submount(const struct vfsmount *mnt_parent,
char *page = (char *) __get_free_page(GFP_USER);
char *devname;
+ dprintk("--> nfs_do_submount()\n");
+
dprintk("%s: submounting on %s/%s\n", __FUNCTION__,
dentry->d_parent->d_name.name,
dentry->d_name.name);
@@ -227,5 +239,7 @@ free_page:
free_page((unsigned long)page);
out:
dprintk("%s: done\n", __FUNCTION__);
+
+ dprintk("<-- nfs_do_submount() = %p\n", mnt);
return mnt;
}