From: Christian Brauner <brauner@kernel.org>
To: linux-fsdevel@vger.kernel.org
Cc: "Amir Goldstein" <amir73il@gmail.com>,
"Josef Bacik" <josef@toxicpanda.com>,
"Jeff Layton" <jlayton@kernel.org>, "Mike Yuan" <me@yhndnzj.com>,
"Zbigniew Jędrzejewski-Szmek" <zbyszek@in.waw.pl>,
"Lennart Poettering" <mzxreary@0pointer.de>,
"Daan De Meyer" <daan.j.demeyer@gmail.com>,
"Aleksa Sarai" <cyphar@cyphar.com>,
"Alexander Viro" <viro@zeniv.linux.org.uk>,
"Jan Kara" <jack@suse.cz>, "Tejun Heo" <tj@kernel.org>,
"Johannes Weiner" <hannes@cmpxchg.org>,
"Michal Koutný" <mkoutny@suse.com>,
"Jakub Kicinski" <kuba@kernel.org>,
"Anna-Maria Behnsen" <anna-maria@linutronix.de>,
"Frederic Weisbecker" <frederic@kernel.org>,
"Thomas Gleixner" <tglx@linutronix.de>,
cgroups@vger.kernel.org, linux-kernel@vger.kernel.org,
netdev@vger.kernel.org, "Christian Brauner" <brauner@kernel.org>
Subject: [PATCH 02/14] mnt: port to ns_ref_*() helpers
Date: Thu, 18 Sep 2025 12:11:47 +0200 [thread overview]
Message-ID: <20250918-work-namespace-ns_ref-v1-2-1b0a98ee041e@kernel.org> (raw)
In-Reply-To: <20250918-work-namespace-ns_ref-v1-0-1b0a98ee041e@kernel.org>
Stop accessing ns.count directly.
Signed-off-by: Christian Brauner <brauner@kernel.org>
---
fs/mount.h | 2 +-
fs/namespace.c | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/fs/mount.h b/fs/mount.h
index 76bf863c9ae2..79c85639a7ba 100644
--- a/fs/mount.h
+++ b/fs/mount.h
@@ -143,7 +143,7 @@ static inline void detach_mounts(struct dentry *dentry)
static inline void get_mnt_ns(struct mnt_namespace *ns)
{
- refcount_inc(&ns->ns.count);
+ ns_ref_inc(ns);
}
extern seqlock_t mount_lock;
diff --git a/fs/namespace.c b/fs/namespace.c
index 03bd04559e69..8cc04e0e64da 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -2111,7 +2111,7 @@ struct mnt_namespace *get_sequential_mnt_ns(struct mnt_namespace *mntns, bool pr
* the mount namespace and it might already be on its
* deathbed.
*/
- if (!refcount_inc_not_zero(&mntns->ns.count))
+ if (!ns_ref_get(mntns))
continue;
return mntns;
@@ -6080,7 +6080,7 @@ void __init mnt_init(void)
void put_mnt_ns(struct mnt_namespace *ns)
{
- if (!refcount_dec_and_test(&ns->ns.count))
+ if (!ns_ref_put(ns))
return;
namespace_lock();
emptied_ns = ns;
--
2.47.3
next prev parent reply other threads:[~2025-09-18 10:12 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-18 10:11 [PATCH 00/14] ns: rework reference counting Christian Brauner
2025-09-18 10:11 ` [PATCH 01/14] ns: add reference count helpers Christian Brauner
2025-09-18 10:11 ` Christian Brauner [this message]
2025-09-18 10:11 ` [PATCH 03/14] cgroup: port to ns_ref_*() helpers Christian Brauner
2025-09-18 15:51 ` Tejun Heo
2025-09-18 10:11 ` [PATCH 04/14] ipc: " Christian Brauner
2025-09-18 10:11 ` [PATCH 05/14] pid: " Christian Brauner
2025-09-18 10:11 ` [PATCH 06/14] time: " Christian Brauner
2025-09-21 7:36 ` Thomas Gleixner
2025-09-18 10:11 ` [PATCH 07/14] user: " Christian Brauner
2025-09-18 10:11 ` [PATCH 08/14] net-sysfs: use check_net() Christian Brauner
2025-09-18 10:11 ` [PATCH 09/14] net: " Christian Brauner
2025-09-18 10:11 ` [PATCH 10/14] ipv4: " Christian Brauner
2025-09-18 10:11 ` [PATCH 11/14] uts: port to ns_ref_*() helpers Christian Brauner
2025-09-18 10:11 ` [PATCH 12/14] net: " Christian Brauner
2025-09-18 10:11 ` [PATCH 13/14] nsfs: " Christian Brauner
2025-09-18 10:11 ` [PATCH 14/14] ns: rename to __ns_ref Christian Brauner
2025-09-18 12:12 ` Michal Koutný
2025-09-21 7:37 ` Thomas Gleixner
2025-09-18 10:41 ` [PATCH 00/14] ns: rework reference counting Jan Kara
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