linux-kernel - Re: [PATCH v2]: New implementation of scsi_execute

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Date:	Thu, 16 Jul 2009 22:15:08 +0400
From:	Vladislav Bolkhovitin <vst@...b.net>
To:	Joe Eykholt <jeykholt@...co.com>
CC:	Boaz Harrosh <bharrosh@...asas.com>, Tejun Heo <tj@...nel.org>,
	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
	scst-devel@...ts.sourceforge.net,
	James Bottomley <James.Bottomley@...senPartnership.com>,
	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>,
	Jens Axboe <jens.axboe@...cle.com>
Subject: Re: [PATCH v2]: New implementation of scsi_execute_async()

Joe Eykholt, on 07/15/2009 09:48 PM wrote:
>>> +int sg_copy(struct scatterlist *dst_sg,
>>> +	    struct scatterlist *src_sg, size_t copy_len,
>>> +	    enum km_type d_km_type, enum km_type s_km_type)
>>> +{
>>> +	int res = 0;
>>> +	size_t dst_len, dst_offs;
>>> +
>>> +	if (copy_len == 0)
>>> +		copy_len = 0x7FFFFFFF; /* copy all */
>>> +
>>> +	dst_len = dst_sg->length;
>>> +	dst_offs = dst_sg->offset;
>>> +
>>> +	do {
>>> +		copy_len -= __sg_copy_elem(&dst_sg, &dst_len, &dst_offs,
>>> +				src_sg, copy_len, d_km_type, s_km_type);
>>> +		if ((copy_len == 0) || (dst_sg == NULL))
>>> +			goto out;
>>> +
>>> +		src_sg = sg_next(src_sg);
>>> +	} while (src_sg != NULL);
>>> +
>>> +out:
>>> +	return res;
>>> +}
> 
> The return value res is always 0 here, contrary to the description.
> Maybe it should be void.

Will be fixed, thanks

>>> +EXPORT_SYMBOL(sg_copy);
>>>
>> Boaz
> 
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