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SubjectRe: [PATCH 03/23] ipc: Use generic ns_common::count
On Thu, Jul 30, 2020 at 02:59:36PM +0300, Kirill Tkhai wrote:
> Convert uts namespace to use generic counter.
>
> Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
> ---

Acked-by: Christian Brauner <christian.brauner@ubuntu.com>

> include/linux/ipc_namespace.h | 3 +--
> ipc/msgutil.c | 2 +-
> ipc/namespace.c | 4 ++--
> 3 files changed, 4 insertions(+), 5 deletions(-)
>
> diff --git a/include/linux/ipc_namespace.h b/include/linux/ipc_namespace.h
> index a06a78c67f19..05e22770af51 100644
> --- a/include/linux/ipc_namespace.h
> +++ b/include/linux/ipc_namespace.h
> @@ -27,7 +27,6 @@ struct ipc_ids {
> };
>
> struct ipc_namespace {
> - refcount_t count;
> struct ipc_ids ids[3];
>
> int sem_ctls[4];
> @@ -128,7 +127,7 @@ extern struct ipc_namespace *copy_ipcs(unsigned long flags,
> static inline struct ipc_namespace *get_ipc_ns(struct ipc_namespace *ns)
> {
> if (ns)
> - refcount_inc(&ns->count);
> + refcount_inc(&ns->ns.count);
> return ns;
> }
>
> diff --git a/ipc/msgutil.c b/ipc/msgutil.c
> index 3149b4a379de..d0a0e877cadd 100644
> --- a/ipc/msgutil.c
> +++ b/ipc/msgutil.c
> @@ -26,7 +26,7 @@ DEFINE_SPINLOCK(mq_lock);
> * and not CONFIG_IPC_NS.
> */
> struct ipc_namespace init_ipc_ns = {
> - .count = REFCOUNT_INIT(1),
> + .ns.count = REFCOUNT_INIT(1),
> .user_ns = &init_user_ns,
> .ns.inum = PROC_IPC_INIT_INO,
> #ifdef CONFIG_IPC_NS
> diff --git a/ipc/namespace.c b/ipc/namespace.c
> index 24e7b45320f7..7bd0766ddc3b 100644
> --- a/ipc/namespace.c
> +++ b/ipc/namespace.c
> @@ -51,7 +51,7 @@ static struct ipc_namespace *create_ipc_ns(struct user_namespace *user_ns,
> goto fail_free;
> ns->ns.ops = &ipcns_operations;
>
> - refcount_set(&ns->count, 1);
> + refcount_set(&ns->ns.count, 1);
> ns->user_ns = get_user_ns(user_ns);
> ns->ucounts = ucounts;
>
> @@ -164,7 +164,7 @@ static DECLARE_WORK(free_ipc_work, free_ipc);
> */
> void put_ipc_ns(struct ipc_namespace *ns)
> {
> - if (refcount_dec_and_lock(&ns->count, &mq_lock)) {
> + if (refcount_dec_and_lock(&ns->ns.count, &mq_lock)) {
> mq_clear_sbinfo(ns);
> spin_unlock(&mq_lock);
>
>
>

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