linux-kernel - Re: [PATCH] cgroup/cpuset: fix circular locking dependency

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Message-ID: <20171204225825.GP2421075@devbig577.frc2.facebook.com>
Date:   Mon, 4 Dec 2017 14:58:25 -0800
From:   Tejun Heo <tj@...nel.org>
To:     Prateek Sood <prsood@...eaurora.org>
Cc:     avagin@...il.com, mingo@...nel.org, peterz@...radead.org,
        linux-kernel@...r.kernel.org, cgroups@...r.kernel.org,
        sramana@...eaurora.org
Subject: Re: [PATCH] cgroup/cpuset: fix circular locking dependency

Hello, again.

On Mon, Dec 04, 2017 at 12:22:19PM -0800, Tejun Heo wrote:
> Hello,
> 
> On Mon, Dec 04, 2017 at 10:44:49AM +0530, Prateek Sood wrote:
> > Any feedback/suggestion for this patch?
> 
> Sorry about the delay.  I'm a bit worried because it feels like we're
> chasing a squirrel.  I'll think through the recent changes and this
> one and get back to you.

Can you please take a look at the following pending commit?

  https://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git/commit/?h=for-4.15-fixes&id=e8b3f8db7aad99fcc5234fc5b89984ff6620de3d

AFAICS, this should remove the circular dependency you originally
reported.  I'll revert the two cpuset commits for now.

Thanks.

-- 
tejun