[PATCH 05/14] pid: port to ns_ref_*() helpers
From: Christian Brauner <brauner@kernel.org>
Date: 2025-09-18 10:12:18
Also in:
cgroups, linux-fsdevel, lkml
Subsystem:
namespaces:, the rest · Maintainers:
Christian Brauner, Linus Torvalds
Stop accessing ns.count directly. Signed-off-by: Christian Brauner <brauner@kernel.org> --- include/linux/pid_namespace.h | 2 +- kernel/pid_namespace.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/include/linux/pid_namespace.h b/include/linux/pid_namespace.h
index ba0efc8c8596..5b2f29d369c4 100644
--- a/include/linux/pid_namespace.h
+++ b/include/linux/pid_namespace.h@@ -62,7 +62,7 @@ static inline struct pid_namespace *to_pid_ns(struct ns_common *ns) static inline struct pid_namespace *get_pid_ns(struct pid_namespace *ns) { if (ns != &init_pid_ns) - refcount_inc(&ns->ns.count); + ns_ref_inc(ns); return ns; }
diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c
index 27e2dd9ee051..162f5fb63d75 100644
--- a/kernel/pid_namespace.c
+++ b/kernel/pid_namespace.c@@ -169,7 +169,7 @@ static void destroy_pid_namespace_work(struct work_struct *work) parent = ns->parent; destroy_pid_namespace(ns); ns = parent; - } while (ns != &init_pid_ns && refcount_dec_and_test(&ns->ns.count)); + } while (ns != &init_pid_ns && ns_ref_put(ns)); } struct pid_namespace *copy_pid_ns(unsigned long flags,
@@ -184,7 +184,7 @@ struct pid_namespace *copy_pid_ns(unsigned long flags, void put_pid_ns(struct pid_namespace *ns) { - if (ns && ns != &init_pid_ns && refcount_dec_and_test(&ns->ns.count)) + if (ns && ns != &init_pid_ns && ns_ref_put(ns)) schedule_work(&ns->work); } EXPORT_SYMBOL_GPL(put_pid_ns);
--
2.47.3