linux-kernel - Re: [PATCH 2/2] drm/qxl: Add qxl dma fence release function

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Message-ID: <20210915063835.36bhpadzbzuj7shw@sirius.home.kraxel.org>
Date:   Wed, 15 Sep 2021 08:38:35 +0200
From:   Gerd Hoffmann <kraxel@...hat.com>
To:     bibo mao <maobibo@...ngson.cn>
Cc:     Dave Airlie <airlied@...hat.com>,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH 2/2] drm/qxl: Add qxl dma fence release function

On Tue, Sep 14, 2021 at 02:23:52AM -0400, bibo mao wrote:
> Add qxl dma fence release function, previously default dma fence
> release function is used, and fence pointer is used to free 
> the memory. With this patch, actual qxl release pointer is used
> to free memory, so that dma fence can put at any place of 
> struct qxl_release.

Why?  Is there a problem with struct dma_fence being the first
element of struct qxl_release?

take care,
  Gerd