netdev - [PATCH 13/14] nsfs: port to ns_ref

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Message-Id: <20250918-work-namespace-ns_ref-v1-13-1b0a98ee041e@kernel.org>
Date: Thu, 18 Sep 2025 12:11:58 +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>, 
 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 13/14] nsfs: port to ns_ref_*() helpers

Stop accessing ns.count directly.

Signed-off-by: Christian Brauner <brauner@...nel.org>
---
 fs/nsfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/nsfs.c b/fs/nsfs.c
index 8484bc4dd3de..dc0a4404b971 100644
--- a/fs/nsfs.c
+++ b/fs/nsfs.c
@@ -492,7 +492,7 @@ static struct dentry *nsfs_fh_to_dentry(struct super_block *sb, struct fid *fh,
 		VFS_WARN_ON_ONCE(ns->ops->type != fid->ns_type);
 		VFS_WARN_ON_ONCE(ns->inum != fid->ns_inum);
 
-		if (!refcount_inc_not_zero(&ns->count))
+		if (!__ns_ref_get(ns))
 			return NULL;
 	}
 

-- 
2.47.3