linux-kernel - Re: [PATCH v3 04/20] mm: VMA sequence count

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Date:   Thu, 14 Sep 2017 11:15:27 +0200
From:   Laurent Dufour <ldufour@...ux.vnet.ibm.com>
To:     Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>
Cc:     paulmck@...ux.vnet.ibm.com, peterz@...radead.org,
        akpm@...ux-foundation.org, kirill@...temov.name,
        ak@...ux.intel.com, mhocko@...nel.org, dave@...olabs.net,
        jack@...e.cz, Matthew Wilcox <willy@...radead.org>,
        benh@...nel.crashing.org, mpe@...erman.id.au, paulus@...ba.org,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, hpa@...or.com,
        Will Deacon <will.deacon@....com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        haren@...ux.vnet.ibm.com, khandual@...ux.vnet.ibm.com,
        npiggin@...il.com, bsingharora@...il.com,
        Tim Chen <tim.c.chen@...ux.intel.com>,
        linuxppc-dev@...ts.ozlabs.org, x86@...nel.org
Subject: Re: [PATCH v3 04/20] mm: VMA sequence count

On 14/09/2017 11:11, Sergey Senozhatsky wrote:
> On (09/14/17 10:58), Laurent Dufour wrote:
> [..]
>> That's right, but here this is the  sequence counter mm->mm_seq, not the
>> vm_seq one.
> 
> d'oh... you are right.

So I'm doubting about the probability of a deadlock here, but I don't like
to see lockdep complaining. Is there an easy way to make it happy ?