vfs: spread struct mount mnt_set_mountpoint child argument

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/namespace.c

@@ -570,10 +570,10 @@ static void detach_mnt(struct mount *mnt, struct path *old_path)
  * vfsmount lock must be held for write
  */
 void mnt_set_mountpoint(struct vfsmount *mnt, struct dentry *dentry,
-			struct vfsmount *child_mnt)
+			struct mount *child_mnt)
 {
-	child_mnt->mnt_parent = mntget(mnt);
-	child_mnt->mnt_mountpoint = dget(dentry);
+	child_mnt->mnt.mnt_parent = mntget(mnt);
+	child_mnt->mnt.mnt_mountpoint = dget(dentry);
 	spin_lock(&dentry->d_lock);
 	dentry->d_flags |= DCACHE_MOUNTED;
 	spin_unlock(&dentry->d_lock);
@@ -584,7 +584,7 @@ void mnt_set_mountpoint(struct vfsmount *mnt, struct dentry *dentry,
  */
 static void attach_mnt(struct mount *mnt, struct path *path)
 {
-	mnt_set_mountpoint(path->mnt, path->dentry, &mnt->mnt);
+	mnt_set_mountpoint(path->mnt, path->dentry, mnt);
 	list_add_tail(&mnt->mnt_hash, mount_hashtable +
 			hash(path->mnt, path->dentry));
 	list_add_tail(&mnt->mnt.mnt_child, &path->mnt->mnt_mounts);
@@ -1617,7 +1617,7 @@ static int attach_recursive_mnt(struct mount *source_mnt,
 		attach_mnt(source_mnt, path);
 		touch_mnt_namespace(parent_path->mnt->mnt_ns);
 	} else {
-		mnt_set_mountpoint(dest_mnt, dest_dentry, &source_mnt->mnt);
+		mnt_set_mountpoint(dest_mnt, dest_dentry, source_mnt);
 		commit_tree(source_mnt);
 	}
 

fs/pnode.c

@@ -246,7 +246,7 @@ int propagate_mnt(struct vfsmount *dest_mnt, struct dentry *dest_dentry,
 		}
 
 		if (is_subdir(dest_dentry, m->mnt_root)) {
-			mnt_set_mountpoint(m, dest_dentry, &child->mnt);
+			mnt_set_mountpoint(m, dest_dentry, child);
 			list_add_tail(&child->mnt_hash, tree_list);
 		} else {
 			/*

fs/pnode.h

@@ -38,7 +38,7 @@ void mnt_release_group_id(struct mount *);
 int get_dominating_id(struct vfsmount *mnt, const struct path *root);
 unsigned int mnt_get_count(struct vfsmount *mnt);
 void mnt_set_mountpoint(struct vfsmount *, struct dentry *,
-			struct vfsmount *);
+			struct mount *);
 void release_mounts(struct list_head *);
 void umount_tree(struct mount *, int, struct list_head *);
 struct mount *copy_tree(struct mount *, struct dentry *, int);