linux-kernel - Re: [PATCH 1/2] cpuset: Fix cpuset_cpus_allowed() to not filter offline CPUs

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Date:   Thu, 2 Feb 2023 10:48:45 -1000
From:   Tejun Heo <tj@...nel.org>
To:     Waiman Long <longman@...hat.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Will Deacon <will@...nel.org>, linux-kernel@...r.kernel.org,
        kernel-team@...roid.com, Zefan Li <lizefan.x@...edance.com>,
        Johannes Weiner <hannes@...xchg.org>, cgroups@...r.kernel.org
Subject: Re: [PATCH 1/2] cpuset: Fix cpuset_cpus_allowed() to not filter
 offline CPUs

On Thu, Feb 02, 2023 at 03:46:02PM -0500, Waiman Long wrote:
> > > I will work on a patchset to do that as a counter offer.
> > We will need a small and simple patch for /urgent, or I will need to
> > revert all your patches -- your call.
> > 
> > I also don't tihnk you fully appreciate the ramifications of
> > task_cpu_possible_mask(), cpuset currently gets that quite wrong.
> 
> OK, I don't realize the urgency of that. If it is that urgent, I will have
> no objection to get it in for now. We can improve it later on. So are you
> planning to get it into the current 6.2 rc or 6.3?
> 
> Tejun, are you OK with that as you are the cgroup maintainer?

Yeah, gotta fix the regression but is there currently a solution which fixes
the regression but doesn't further break other stuff?

Thanks.

-- 
tejun