netdev - Re: [PATCH v2 0/7] pid: Introduce helper task_is_in_root

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Date:   Mon, 24 Jan 2022 17:29:28 +0800
From:   Leo Yan <leo.yan@...aro.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Leon Romanovsky <leon@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Mike Leach <mike.leach@...aro.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jan Harkes <jaharkes@...cmu.edu>, coda@...cmu.edu,
        Paul Moore <paul@...l-moore.com>,
        Eric Paris <eparis@...hat.com>,
        Balbir Singh <bsingharora@...il.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, coresight@...ts.linaro.org,
        linux-arm-kernel@...ts.infradead.org, codalist@...a.cs.cmu.edu,
        linux-audit@...hat.com
Subject: Re: [PATCH v2 0/7] pid: Introduce helper task_is_in_root_ns()

On Wed, Jan 12, 2022 at 02:40:47PM +0800, Leo Yan wrote:
> Hi David,
> 
> On Wed, Dec 08, 2021 at 04:33:13PM +0800, Leo Yan wrote:
> > The kernel uses open code to check if a process is in root PID namespace
> > or not in several places.
> > 
> > Suggested by Suzuki, this patch set is to create a helper function
> > task_is_in_init_pid_ns() to replace open code.
> > 
> > This patch set has been applied on the mainline kernel and built for
> > Arm64 kernel with enabling all relevant modules.
> 
> I'd like sync for how to merging this patch set.  Except patch 05/07,
> all of other patches in this patch set have been received the reviewed
> or acked tags.  So could you pick up this patch set?
> 
> Furthermore, we have another patch set "coresight: etm: Correct PID
> tracing for non-root namespace" [1], which is dependent on the current
> patch set and it has been Acked by Suzuki.
> 
> I'd like to get opinions from David and CoreSight maintainers Mathieu
> and Suzuki, should we merge the patch set [1] via David's tree as well
> to avoid dependency issue, or prefer to merge it via CoreSight tree?
> If David prefers the prior option, I can resend the patch set [1] with
> looping David.

Gentle ping, Dave.

I verified the current patch set and CoreSight patch set, both can apply
clearly on the latest mainline kernel (with last commit
dd81e1c7d5fb "Merge tag 'powerpc-5.17-2' of
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux").

Thanks,
Leo

> [1] https://lore.kernel.org/lkml/20211213121323.1887180-1-leo.yan@linaro.org/