linux-kernel - Re: [PATCH 1/11] Add generic helpers for arch IPI function calls

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Message-ID: <alpine.LFD.1.10.0804220735350.2779@woody.linux-foundation.org>
Date:	Tue, 22 Apr 2008 07:43:44 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Jens Axboe <jens.axboe@...cle.com>
cc:	linux-arch@...r.kernel.org, linux-kernel@...r.kernel.org,
	npiggin@...e.de
Subject: Re: [PATCH 1/11] Add generic helpers for arch IPI function calls



On Tue, 22 Apr 2008, Jens Axboe wrote:
> +
> +static inline void csd_flag_wait(struct call_single_data *data)
> +{
> +	/* Wait for response */
> +	do {
> +		/*
> +		 * We need to see the flags store in the IPI handler
> +		 */
> +		smp_mb();
> +		if (!(data->flags & CSD_FLAG_WAIT))
> +			break;
> +		cpu_relax();
> +	} while (1);
> +}

You forgot to free the "data" here? The waiter must also free the object, 
since now the callee does not.

		Linus

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