linux-kernel - Re: [PATCH 1/6] lib/rhashtable: convert param sanitations to WARN

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Message-ID: <20180528155414.mbwyldat7mn6ro2j@gondor.apana.org.au>
Date:   Mon, 28 May 2018 23:54:14 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Davidlohr Bueso <dave@...olabs.net>
Cc:     akpm@...ux-foundation.org, torvalds@...ux-foundation.org,
        tgraf@...g.ch, manfred@...orfullife.com,
        guillaume.knispel@...ersonicimagine.com, linux-api@...r.kernel.org,
        linux-kernel@...r.kernel.org, Davidlohr Bueso <dbueso@...e.de>
Subject: Re: [PATCH 1/6] lib/rhashtable: convert param sanitations to WARN_ON

On Mon, May 28, 2018 at 06:12:09AM -0700, Davidlohr Bueso wrote:
>
> Well, I don't really _want_ them; nor does the ipc code which already
> does a WARN_ON() (but that goes away in future patches). What I want
> is to get rid of the return path. So I don't really care if we convert
> them to WARN or remove them altogether. Would you be happy with the
> later?

It has nothing to do with the error return path.  Assuming you
remove the allocation failure path, then this error path can never
trigger for *your* use-case.  IOW you can either just ignore the
return value for ipc or just do the WARN_ON in your code.

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