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pid: rely on common reference count behavior

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Now that we changed the generic reference counting mechanism for all
namespaces to never manipulate reference counts of initial namespaces we
can drop the special handling for pid namespaces.

Link: https://patch.msgid.link/20251110-work-namespace-nstree-fixes-v1-15-e8a9264e0fb9@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christian Brauner
2025-11-10 16:08:27 +01:00
parent 7118daabb6
commit 282879afa0
2 changed files with 2 additions and 3 deletions
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3
include/linux/pid_namespace.h
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@@ -61,8 +61,7 @@ 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)
ns_ref_inc(ns);
ns_ref_inc(ns);
return ns;
}

2
kernel/pid_namespace.c
View File

@@ -184,7 +184,7 @@ struct pid_namespace *copy_pid_ns(u64 flags,
void put_pid_ns(struct pid_namespace *ns)
{
if (ns && ns != &init_pid_ns && ns_ref_put(ns))
if (ns && ns_ref_put(ns))
schedule_work(&ns->work);
}
EXPORT_SYMBOL_GPL(put_pid_ns);