linux-kernel - Re: [PATCH 5/7] swiotlb: (re)Create swiotlb_unmap

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Message-Id: <FCEB8195-191B-4835-B895-D70C19DE23DE@kernel.crashing.org>
Date:	Tue, 7 Apr 2009 01:34:44 -0500
From:	Kumar Gala <galak@...nel.crashing.org>
To:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
Cc:	beckyb@...nel.crashing.org, linux-kernel@...r.kernel.org,
	mingo@...e.hu, jeremy@...p.org, ian.campbell@...rix.com
Subject: Re: [PATCH 5/7] swiotlb: (re)Create swiotlb_unmap_single


On Apr 6, 2009, at 9:24 PM, FUJITA Tomonori wrote:

> On Fri,  3 Apr 2009 20:56:47 -0500
> Becky Bruce <beckyb@...nel.crashing.org> wrote:
>
>> This mirrors the current swiotlb_sync_single() setup
>> where the swiotlb_unmap_single() function is static to this
>> file and contains the logic required to determine if we need
>> to call actual sync_single.  Previously, swiotlb_unmap_page
>> and swiotlb_unmap_sg were duplicating very similar code.
>> The duplicated code has also been reformatted for
>> readability.
>>
>> Note that the swiotlb_unmap_sg code was previously doing
>> a complicated comparison to determine if an addresses needed
>> to be unmapped where a simple is_swiotlb_buffer() call
>> would have sufficed.
>>
>> Signed-off-by: Becky Bruce <beckyb@...nel.crashing.org>
>> ---
>> lib/swiotlb.c |   36 +++++++++++++++++++++++-------------
>> 1 files changed, 23 insertions(+), 13 deletions(-)
>>
>> diff --git a/lib/swiotlb.c b/lib/swiotlb.c
>> index af2ec25..602315b 100644
>> --- a/lib/swiotlb.c
>> +++ b/lib/swiotlb.c
>
> I don't think 'swiotlb_unmap_single' name is appropriate.
>
> swiotlb_unmap_single sounds like an exported function that IOMMUs can
> use (and it was) however it should not be.

What do you suggest we call it?  __swiotlb_unmap_single.

- k
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