linux-kernel - [PATCH 06/14] time: port to ns_ref

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Message-Id: <20250918-work-namespace-ns_ref-v1-6-1b0a98ee041e@kernel.org>
Date: Thu, 18 Sep 2025 12:11:51 +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>, 
 Daan De Meyer <daan.j.demeyer@...il.com>, 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, 
 linux-kernel@...r.kernel.org, netdev@...r.kernel.org, 
 Christian Brauner <brauner@...nel.org>
Subject: [PATCH 06/14] time: port to ns_ref_*() helpers

Stop accessing ns.count directly.

Signed-off-by: Christian Brauner <brauner@...nel.org>
---
 include/linux/time_namespace.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/time_namespace.h b/include/linux/time_namespace.h
index a47a4ce4183e..f3b9567cf1f4 100644
--- a/include/linux/time_namespace.h
+++ b/include/linux/time_namespace.h
@@ -44,7 +44,7 @@ extern void timens_commit(struct task_struct *tsk, struct time_namespace *ns);
 
 static inline struct time_namespace *get_time_ns(struct time_namespace *ns)
 {
-	refcount_inc(&ns->ns.count);
+	ns_ref_inc(ns);
 	return ns;
 }
 
@@ -57,7 +57,7 @@ struct page *find_timens_vvar_page(struct vm_area_struct *vma);
 
 static inline void put_time_ns(struct time_namespace *ns)
 {
-	if (refcount_dec_and_test(&ns->ns.count))
+	if (ns_ref_put(ns))
 		free_time_ns(ns);
 }
 

-- 
2.47.3