From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: akpm@linux-foundation.org, JBottomley@novell.com,
linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH -mm 2/2] remove dma_is_consistent API
Date: Fri, 23 Jul 2010 12:18:57 -0400 [thread overview]
Message-ID: <20100723161857.GA10447@phenom.dumpdata.com> (raw)
In-Reply-To: <1279798811-21304-2-git-send-email-fujita.tomonori@lab.ntt.co.jp>
On Thu, Jul 22, 2010 at 08:40:11PM +0900, FUJITA Tomonori wrote:
> Architectures implement dma_is_consistent() in different ways (some
> misinterpret the definition of API in DMA-API.txt). So it hasn't been
> so useful for drivers. We have only one user of the API in
> tree. Unlikely out-of-tree drivers use the API.
>
> Even if we fix dma_is_consistent() in some architectures, it doesn't
> look useful at all. It was invented long ago for some old systems that
> can't allocate coherent memory at all. It's better to export only APIs
> that are definitely necessary for drivers.
>
> Let's remove this API.
>
> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
next prev parent reply other threads:[~2010-07-23 16:19 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-22 11:40 [PATCH -mm 1/2] 53c700: remove dma_is_consistent usage FUJITA Tomonori
2010-07-22 11:40 ` [PATCH -mm 2/2] remove dma_is_consistent API FUJITA Tomonori
2010-07-23 16:18 ` Konrad Rzeszutek Wilk [this message]
-- strict thread matches above, loose matches on Subject: below --
2010-06-27 10:10 [PATCH -mm 1/2] scsi: remove dma_is_consistent usage in 53c700 FUJITA Tomonori
2010-06-27 10:10 ` [PATCH -mm 2/2] remove dma_is_consistent() API FUJITA Tomonori
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