Re: [tip:locking/core] locking/rwsem: Fix lock optimistic spinning when owner is not running
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- Subject: Re: [tip:locking/core] locking/rwsem: Fix lock optimistic spinning when owner is not running
- From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
- Date: Tue, 10 Mar 2015 17:16:37 +0100
- Cc: Oleg Nesterov <oleg@xxxxxxxxxx>, "linux-tip-commits@xxxxxxxxxxxxxxx" <linux-tip-commits@xxxxxxxxxxxxxxx>, Davidlohr Bueso <dave@xxxxxxxxxxxx>, Peter Anvin <hpa@xxxxxxxxx>, Sasha Levin <sasha.levin@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Jason Low <jason.low2@xxxxxx>, Michel Lespinasse <walken@xxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Paul McKenney <paulmck@xxxxxxxxxxxxxxxxxx>, Dave Jones <davej@xxxxxxxxxxxxxxxxx>, Ming Lei <ming.lei@xxxxxxxxxxxxx>, Tim Chen <tim.c.chen@xxxxxxxxxxxxxxx>
- In-reply-to: <CA+55aFxMoq90OhVuZXRth51amgga7pD+7qDsiu4sSVcviwYZLQ@mail.gmail.com>
- User-agent: Mutt/1.5.22.1 (2013-10-16)
On Tue, Mar 10, 2015 at 09:04:23AM -0700, Linus Torvalds wrote:
>
> I think we should just make 'task_struct_cachep' have SLAB_DESTROY_BY_RCU.
Yes, that'll work. Also for the other cases Oleg found previously I
think.
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