linux-kernel - Re: [PATCH - revised] rhashtable: detect when object movement might have invalidated a lookup

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Message-ID: <20180717063020.rpqsgrbpwavklxz7@gondor.apana.org.au>
Date:   Tue, 17 Jul 2018 14:30:20 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     NeilBrown <neilb@...e.com>
Cc:     David Miller <davem@...emloft.net>, tgraf@...g.ch,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        eric.dumazet@...il.com
Subject: Re: [PATCH - revised] rhashtable: detect when object movement might
 have invalidated a lookup

On Mon, Jul 16, 2018 at 01:26:42PM +1000, NeilBrown wrote:
>
> Look in Documenation/RCU/rculist_nulls.txt.
> The very first example is a typical lookup for a nulls list.
> The above sample code would read:

OK, but how will this work with rhlist? It would be very bad to
have a feature that works for rhashtable but fails in strange
ways when you use rhlist.

Cheers,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt