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-rw-r--r--fs/pnode.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/pnode.h b/fs/pnode.h
index 988f1aa9b02a..0b02a6393891 100644
--- a/fs/pnode.h
+++ b/fs/pnode.h
@@ -53,4 +53,7 @@ struct mount *copy_tree(struct mount *, struct dentry *, int);
bool is_path_reachable(struct mount *, struct dentry *,
const struct path *root);
int count_mounts(struct mnt_namespace *ns, struct mount *mnt);
+bool propagation_would_overmount(const struct mount *from,
+ const struct mount *to,
+ const struct mountpoint *mp);
#endif /* _LINUX_PNODE_H */