linux-kernel - Re: [PATCH 3/3] mm: catch memory commitment underflow

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Date:	Wed, 25 Jun 2014 15:23:45 -0700
From:	Dave Hansen <dave.hansen@...el.com>
To:	Konstantin Khlebnikov <koct9i@...il.com>, linux-mm@...ck.org,
	Andrew Morton <akpm@...ux-foundation.org>
CC:	Hugh Dickins <hughd@...gle.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] mm: catch memory commitment underflow

On 06/24/2014 01:16 PM, Konstantin Khlebnikov wrote:
> reserve;
>  
> +#ifdef CONFIG_DEBUG_VM
> +	WARN_ONCE(percpu_counter_read(&vm_committed_as) <
> +			-(s64)vm_committed_as_batch * num_online_cpus(),
> +			"memory commitment underflow");
> +#endif

Why not use VM_WARN_ON_ONCE()?
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