netdev - Re: rhashtable issue

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Message-ID: <Z0U9IW12JklBfuBv@gondor.apana.org.au>
Date: Tue, 26 Nov 2024 11:14:41 +0800
From: Herbert Xu <herbert@...dor.apana.org.au>
To: Kent Overstreet <kent.overstreet@...ux.dev>
Cc: NeilBrown <neilb@...e.de>, Thomas Graf <tgraf@...g.ch>,
	netdev@...r.kernel.org
Subject: Re: rhashtable issue - -EBUSY

On Mon, Nov 25, 2024 at 10:12:44PM -0500, Kent Overstreet wrote:
>
> Does the knob have to be insecure_elasticity? Neal's idea of just
> blocking instead of returning -EBUSY seems perfectly viable to me, most
> uses I'm aware of don't need insertions to be strictly nonblocking.

Well having a knob is not negotiable because we must have this
defence for networking users where hostile actors are a fact of
life.

And no you cannot block in networking.

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