vfs: spread struct mount - propagate_mnt()

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

fs/namespace.c

@@ -1595,23 +1595,23 @@ static int attach_recursive_mnt(struct mount *source_mnt,
 			struct path *path, struct path *parent_path)
 {
 	LIST_HEAD(tree_list);
-	struct vfsmount *dest_mnt = path->mnt;
+	struct mount *dest_mnt = real_mount(path->mnt);
 	struct dentry *dest_dentry = path->dentry;
 	struct mount *child, *p;
 	int err;
 
-	if (IS_MNT_SHARED(dest_mnt)) {
+	if (IS_MNT_SHARED(&dest_mnt->mnt)) {
 		err = invent_group_ids(source_mnt, true);
 		if (err)
 			goto out;
 	}
-	err = propagate_mnt(dest_mnt, dest_dentry, &source_mnt->mnt, &tree_list);
+	err = propagate_mnt(dest_mnt, dest_dentry, source_mnt, &tree_list);
 	if (err)
 		goto out_cleanup_ids;
 
 	br_write_lock(vfsmount_lock);
 
-	if (IS_MNT_SHARED(dest_mnt)) {
+	if (IS_MNT_SHARED(&dest_mnt->mnt)) {
 		for (p = source_mnt; p; p = next_mnt(p, &source_mnt->mnt))
 			set_mnt_shared(p);
 	}
@@ -1620,7 +1620,7 @@ 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_set_mountpoint(&dest_mnt->mnt, dest_dentry, source_mnt);
 		commit_tree(source_mnt);
 	}
 
@@ -1633,7 +1633,7 @@ static int attach_recursive_mnt(struct mount *source_mnt,
 	return 0;
 
  out_cleanup_ids:
-	if (IS_MNT_SHARED(dest_mnt))
+	if (IS_MNT_SHARED(&dest_mnt->mnt))
 		cleanup_group_ids(source_mnt, NULL);
  out:
 	return err;

fs/pnode.c

@@ -217,18 +217,18 @@ static struct mount *get_source(struct mount *dest,
  * @source_mnt: source mount.
  * @tree_list : list of heads of trees to be attached.
  */
-int propagate_mnt(struct vfsmount *dest_mnt, struct dentry *dest_dentry,
-		    struct vfsmount *source_mnt, struct list_head *tree_list)
+int propagate_mnt(struct mount *dest_mnt, struct dentry *dest_dentry,
+		    struct mount *source_mnt, struct list_head *tree_list)
 {
 	struct mount *m, *child;
 	int ret = 0;
-	struct mount *prev_dest_mnt = real_mount(dest_mnt);
-	struct mount *prev_src_mnt  = real_mount(source_mnt);
+	struct mount *prev_dest_mnt = dest_mnt;
+	struct mount *prev_src_mnt  = source_mnt;
 	LIST_HEAD(tmp_list);
 	LIST_HEAD(umount_list);
 
-	for (m = propagation_next(real_mount(dest_mnt), real_mount(dest_mnt)); m;
-			m = propagation_next(m, real_mount(dest_mnt))) {
+	for (m = propagation_next(dest_mnt, dest_mnt); m;
+			m = propagation_next(m, dest_mnt)) {
 		int type;
 		struct mount *source;
 

fs/pnode.h

@@ -30,7 +30,7 @@ static inline void set_mnt_shared(struct mount *mnt)
 }
 
 void change_mnt_propagation(struct mount *, int);
-int propagate_mnt(struct vfsmount *, struct dentry *, struct vfsmount *,
+int propagate_mnt(struct mount *, struct dentry *, struct mount *,
 		struct list_head *);
 int propagate_umount(struct list_head *);
 int propagate_mount_busy(struct mount *, int);