linux-kernel - Re: [PATCH 2/2] mm: vmalloc: Replace BUG_ON() by WARN_ON

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Message-ID: <Y6Lwgot7idEv5OTx@pc636>
Date:   Wed, 21 Dec 2022 12:39:46 +0100
From:   Uladzislau Rezki <urezki@...il.com>
To:     Lorenzo Stoakes <lstoakes@...il.com>
Cc:     "Uladzislau Rezki (Sony)" <urezki@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
        LKML <linux-kernel@...r.kernel.org>, Baoquan He <bhe@...hat.com>,
        Christoph Hellwig <hch@...radead.org>,
        Matthew Wilcox <willy@...radead.org>,
        Nicholas Piggin <npiggin@...il.com>,
        Oleksiy Avramchenko <oleksiy.avramchenko@...y.com>
Subject: Re: [PATCH 2/2] mm: vmalloc: Replace BUG_ON() by WARN_ON_ONCE()

On Tue, Dec 20, 2022 at 06:56:38PM +0000, Lorenzo Stoakes wrote:
> On Tue, Dec 20, 2022 at 06:53:18PM +0000, Lorenzo Stoakes wrote:
> [snip
> > Absolutely in favour of this in principle (BUG_ON() is something we should
> > resort to in only the direst of circumstances), one small nit - perhaps it'd be
> > neater to simply make this a guard clause? E.g.:-
> >
> > 	if (!WARN_ON_ONCE(!va))
> > 		return;
> >
> > 	...
> 
> Made a mistake here, meant to say
> 
>  	if (WARN_ON_ONCE(!va))
>  		return;
> 
Agree. This looks better. Less confusing :)

I will post a v2.

--
Uladzislau Rezki