linux-kernel - RE: [EXT] Re: [PATCH] media: videobuf2-dma-sg: limit the sg segment size

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Message-ID: <DB9PR04MB9284A1DAB3C642C57298893A87F0A@DB9PR04MB9284.eurprd04.prod.outlook.com>
Date:   Wed, 13 Sep 2023 09:13:58 +0000
From:   Hui Fang <hui.fang@....com>
To:     Tomasz Figa <tfiga@...omium.org>
CC:     Anle Pan <anle.pan@....com>,
        "m.szyprowski@...sung.com" <m.szyprowski@...sung.com>,
        "mchehab@...nel.org" <mchehab@...nel.org>,
        "linux-media@...r.kernel.org" <linux-media@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Jindong Yue <jindong.yue@....com>,
        Xuegang Liu <xuegang.liu@....com>, Xu Yang <xu.yang_2@....com>
Subject: RE: [EXT] Re: [PATCH] media: videobuf2-dma-sg: limit the sg segment
 size

On Tue, Sep 12, 2023 at 16:52 PM Tomasz Figa <tfiga@...omium.org> wrote:
> Right. You may want to try modifying vb2_dma_sg_alloc_compacted() to use
> dma_alloc_pages() instead of alloc_pages().

Thanks for your suggestion, it works. And it's a better resolution since no need
an extra copy from high buffer to low buffer.

BRs,
Fang Hui