Messages in this thread | | | Date | Wed, 8 Dec 2021 10:25:06 +0000 | Subject | Re: [PATCH v2 1/7] pid: Introduce helper task_is_in_init_pid_ns() | From | Suzuki K Poulose <> |
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On 08/12/2021 08:33, Leo Yan wrote: > Currently the kernel uses open code in multiple places to check if a > task is in the root PID namespace with the kind of format: > > if (task_active_pid_ns(current) == &init_pid_ns) > do_something(); > > This patch creates a new helper function, task_is_in_init_pid_ns(), it > returns true if a passed task is in the root PID namespace, otherwise > returns false. So it will be used to replace open codes. > > Suggested-by: Suzuki K Poulose <suzuki.poulose@arm.com> > Signed-off-by: Leo Yan <leo.yan@linaro.org> > --- > include/linux/pid_namespace.h | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/include/linux/pid_namespace.h b/include/linux/pid_namespace.h > index 7c7e627503d2..07481bb87d4e 100644 > --- a/include/linux/pid_namespace.h > +++ b/include/linux/pid_namespace.h > @@ -86,4 +86,9 @@ extern struct pid_namespace *task_active_pid_ns(struct task_struct *tsk); > void pidhash_init(void); > void pid_idr_init(void); > > +static inline bool task_is_in_init_pid_ns(struct task_struct *tsk) > +{ > + return task_active_pid_ns(tsk) == &init_pid_ns; > +} > +
Looks good to me,
Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com>
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