linux-kernel - Re: [patch 4/21] mm: refund memory for a locked buffer

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Message-ID: <20090401002334.GD28228@redhat.com>
Date:	Wed, 1 Apr 2009 02:23:34 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Markus Metzger <markus.t.metzger@...el.com>
Cc:	linux-kernel@...r.kernel.org, mingo@...e.hu, tglx@...utronix.de,
	hpa@...or.com, markus.t.metzger@...il.com, roland@...hat.com,
	eranian@...glemail.com, juan.villacis@...el.com,
	ak@...ux.jf.intel.com
Subject: Re: [patch 4/21] mm: refund memory for a locked buffer

On 03/31, Markus Metzger wrote:
>
> -void release_locked_buffer(void *buffer, size_t size)
> +void refund_locked_buffer_memory(struct mm_struct *mm, size_t size)

Hmm. Again, this is not bisect friendly, afaoics the kernel can't be
compiled with this patch. Irenames release_locked_buffer(), but we still
have callers (fixed by the next patches).

>  void free_locked_buffer(void *buffer, size_t size)
>  {
> -	release_locked_buffer(buffer, size);
> -
> +	refund_locked_buffer_memory(current->mm, size);
>  	kfree(buffer);
>  }

And this one has no callers after the next patches?

Oleg.

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