netdev - [PATCH 1/3] nstree: make struct ns

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Message-Id: <20250924-work-namespaces-fixes-v1-1-8fb682c8678e@kernel.org>
Date: Wed, 24 Sep 2025 13:33:58 +0200
From: Christian Brauner <brauner@...nel.org>
To: linux-fsdevel@...r.kernel.org
Cc: Amir Goldstein <amir73il@...il.com>, Josef Bacik <josef@...icpanda.com>, 
 Jeff Layton <jlayton@...nel.org>, Mike Yuan <me@...dnzj.com>, 
 Zbigniew Jędrzejewski-Szmek <zbyszek@...waw.pl>, 
 Lennart Poettering <mzxreary@...inter.de>, Aleksa Sarai <cyphar@...har.com>, 
 Alexander Viro <viro@...iv.linux.org.uk>, Jan Kara <jack@...e.cz>, 
 Tejun Heo <tj@...nel.org>, Johannes Weiner <hannes@...xchg.org>, 
 Michal Koutný <mkoutny@...e.com>, 
 Jakub Kicinski <kuba@...nel.org>, 
 Anna-Maria Behnsen <anna-maria@...utronix.de>, 
 Frederic Weisbecker <frederic@...nel.org>, 
 Thomas Gleixner <tglx@...utronix.de>, cgroups@...r.kernel.org, 
 netdev@...r.kernel.org, Christian Brauner <brauner@...nel.org>
Subject: [PATCH 1/3] nstree: make struct ns_tree private

Don't expose it directly. There's no need to do that.

Signed-off-by: Christian Brauner <brauner@...nel.org>
---
 include/linux/nstree.h | 13 -------------
 kernel/nstree.c        | 13 +++++++++++++
 2 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/include/linux/nstree.h b/include/linux/nstree.h
index 29ad6402260c..8b8636690473 100644
--- a/include/linux/nstree.h
+++ b/include/linux/nstree.h
@@ -9,19 +9,6 @@
 #include <linux/rculist.h>
 #include <linux/cookie.h>
 
-/**
- * struct ns_tree - Namespace tree
- * @ns_tree: Rbtree of namespaces of a particular type
- * @ns_list: Sequentially walkable list of all namespaces of this type
- * @ns_tree_lock: Seqlock to protect the tree and list
- */
-struct ns_tree {
-	struct rb_root ns_tree;
-	struct list_head ns_list;
-	seqlock_t ns_tree_lock;
-	int type;
-};
-
 extern struct ns_tree cgroup_ns_tree;
 extern struct ns_tree ipc_ns_tree;
 extern struct ns_tree mnt_ns_tree;
diff --git a/kernel/nstree.c b/kernel/nstree.c
index bbe8bedc924c..113d681857f1 100644
--- a/kernel/nstree.c
+++ b/kernel/nstree.c
@@ -4,6 +4,19 @@
 #include <linux/proc_ns.h>
 #include <linux/vfsdebug.h>
 
+/**
+ * struct ns_tree - Namespace tree
+ * @ns_tree: Rbtree of namespaces of a particular type
+ * @ns_list: Sequentially walkable list of all namespaces of this type
+ * @ns_tree_lock: Seqlock to protect the tree and list
+ */
+struct ns_tree {
+       struct rb_root ns_tree;
+       struct list_head ns_list;
+       seqlock_t ns_tree_lock;
+       int type;
+};
+
 struct ns_tree mnt_ns_tree = {
 	.ns_tree = RB_ROOT,
 	.ns_list = LIST_HEAD_INIT(mnt_ns_tree.ns_list),

-- 
2.47.3