linux-kernel - Re: [v2 PATCH] rhashtable: Still do rehash when we get EEXIST

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Message-Id: <A247F887-832E-44AD-AC41-C22E124E44EE@appneta.com>
Date:   Sat, 26 Jan 2019 14:02:48 -0800
From:   Josh Elsasser <jelsasser@...neta.com>
To:     Herbert Xu <herbert@...dor.apana.org.au>,
        "David S . Miller" <davem@...emloft.net>
Cc:     Thomas Graf <tgraf@...g.ch>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Josh Elsasser <jelsasser@...neta.com>
Subject: Re: [v2 PATCH] rhashtable: Still do rehash when we get EEXIST

On Jan 23, 2019, at 7:40 PM, Josh Elsasser <jelsasser@...neta.com> wrote:
> On Jan 23, 2019, at 7:08 PM, Herbert Xu <herbert@...dor.apana.org.au> wrote:
> 
>> Thanks for catching this!
>> 
>> Although I think we should fix this in a different way.  The problem
>> here is that the shrink cannot proceed because there was a previous
>> rehash that is still incomplete.  We should wait for its completion
>> and then reattempt a shrinnk should it still be necessary.
> 
> I can't test this right now because our VM server's down 

Got one of the poor little reproducer VM's back up and running and loaded
up this patch. Works like a charm. For the v2 PATCH, can add my:

Tested-by: Josh Elsasser <jelsasser@...neta.com>