On Sun, 2007-01-14 at 21:31 +0100, Stefan Richter wrote:
> On 14 Jan, Arjan van de Ven wrote:
> > vmalloc space is limited; you really can't assume you can get any more
> > than 64Mb or so (and even then it's thight on some systems already);
>
> I suppose "grep VmallocChunk /proc/meminfo" shows what is available?
>
> > it really sounds like vmalloc space isn't the right solution for your
> > problem whatever it is (context is lost in the quoted mail)...
> > can you restate the problem to see if there's a better solution
> > possible?
>
> Thanks. Below is Peter's message to linux1394-devel. The previous
> discussion went over libdc1394-devel which I don't receive. Obviously he
> wants a really large buffer for reception of an isochronous stream. I
> guess his reason is highly application specific...
but why does that even use vmalloc? You can just do a scatter gather
thing instead... and keep a list of pages that you're mapping into
userspace. vmalloc isn't really a requirement for that....
--
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