Move the helper to ns_common.h where it belongs.

Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>
---
 include/linux/ns_common.h | 20 ++++++++++++++++++++
 include/linux/nsproxy.h   | 11 -----------
 2 files changed, 20 insertions(+), 11 deletions(-)

diff --git a/include/linux/ns_common.h b/include/linux/ns_common.h
index 7d22ea50b098..bc2e0758e1c9 100644
--- a/include/linux/ns_common.h
+++ b/include/linux/ns_common.h
@@ -6,6 +6,15 @@
 
 struct proc_ns_operations;
 
+struct cgroup_namespace;
+struct ipc_namespace;
+struct mnt_namespace;
+struct net;
+struct pid_namespace;
+struct time_namespace;
+struct user_namespace;
+struct uts_namespace;
+
 struct ns_common {
 	struct dentry *stashed;
 	const struct proc_ns_operations *ops;
@@ -13,4 +22,15 @@ struct ns_common {
 	refcount_t count;
 };
 
+#define to_ns_common(__ns)                              \
+	_Generic((__ns),                                \
+		struct cgroup_namespace *: &(__ns)->ns, \
+		struct ipc_namespace *:    &(__ns)->ns, \
+		struct mnt_namespace *:    &(__ns)->ns, \
+		struct net *:              &(__ns)->ns, \
+		struct pid_namespace *:    &(__ns)->ns, \
+		struct time_namespace *:   &(__ns)->ns, \
+		struct user_namespace *:   &(__ns)->ns, \
+		struct uts_namespace *:    &(__ns)->ns)
+
 #endif
diff --git a/include/linux/nsproxy.h b/include/linux/nsproxy.h
index dab6a1734a22..e6bec522b139 100644
--- a/include/linux/nsproxy.h
+++ b/include/linux/nsproxy.h
@@ -42,17 +42,6 @@ struct nsproxy {
 };
 extern struct nsproxy init_nsproxy;
 
-#define to_ns_common(__ns)                              \
-	_Generic((__ns),                                \
-		struct cgroup_namespace *: &(__ns->ns), \
-		struct ipc_namespace *:    &(__ns->ns), \
-		struct net *:              &(__ns->ns), \
-		struct pid_namespace *:    &(__ns->ns), \
-		struct mnt_namespace *:    &(__ns->ns), \
-		struct time_namespace *:   &(__ns->ns), \
-		struct user_namespace *:   &(__ns->ns), \
-		struct uts_namespace *:    &(__ns->ns))
-
 /*
  * A structure to encompass all bits needed to install
  * a partial or complete new set of namespaces.

-- 
2.47.3