Re: [PATCH 4/4] v4l2-mem2mem: allow reqbufs(0) with "in use" MMAP buffers

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Le mardi 08 avril 2014 à 12:51 +0200, Marek Szyprowski a écrit :
> Hello,
> 
> On 2014-04-07 16:41, Kamil Debski wrote:
> > Pawel, Marek,
> > 
> > Before taking this to my tree I wanted to get an ACK from one of
> > the
> > videobuf2 maintainers. Could you spare a moment to look through
> > this
> > patch?
> 
> It's not a bug, it is a feature. This was one of the fundamental
> design 
> requirements to allow applications to track if the memory is used or
> not.

I still have the impression it is not fully correct for the case
buffers are exported using DMABUF. Like if the dmabuf was owning the
vb2 buffer instead of the opposite ...

Nicolas

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