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| author | Christian Brauner <brauner@kernel.org> | 2025-09-19 10:16:49 +0200 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2025-09-19 16:22:38 +0200 |
| commit | 1f84344c8d83bb867d142608cf543b80bc74b7a2 (patch) | |
| tree | 537217bd05efdba7244997dc3e246c81c6723c10 /kernel/pid_namespace.c | |
| parent | bb57289f0ce1bab7c9ea2106a29088088dc95229 (diff) | |
| parent | 024596a4e2802e457a9f92af79f246fa9631f8de (diff) | |
Merge patch series "ns: rework reference counting"
Christian Brauner <brauner@kernel.org> says:
Stop open accesses to the reference counts and cargo-culting the same
code in all namespace. Use a set of dedicated helpers and make the
actual count private.
* patches from https://lore.kernel.org/20250918-work-namespace-ns_ref-v1-0-1b0a98ee041e@kernel.org:
ns: rename to __ns_ref
nsfs: port to ns_ref_*() helpers
net: port to ns_ref_*() helpers
uts: port to ns_ref_*() helpers
ipv4: use check_net()
net: use check_net()
net-sysfs: use check_net()
user: port to ns_ref_*() helpers
time: port to ns_ref_*() helpers
pid: port to ns_ref_*() helpers
ipc: port to ns_ref_*() helpers
cgroup: port to ns_ref_*() helpers
mnt: port to ns_ref_*() helpers
ns: add reference count helpers
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'kernel/pid_namespace.c')
| -rw-r--r-- | kernel/pid_namespace.c | 4 |
1 files changed, 2 insertions, 2 deletions
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); |