Re: properly communicate queue limits to the DMA layer v2
From: Christoph Hellwig
Date: Mon Jul 15 2019 - 12:58:29 EST
On Mon, Jun 17, 2019 at 02:19:52PM +0200, Christoph Hellwig wrote:
> Hi Martin,
>
> we've always had a bit of a problem communicating the block layer
> queue limits to the DMA layer, which needs to respect them when
> an IOMMU that could merge segments is used. Unfortunately most
> drivers don't get this right. Oddly enough we've been mostly
> getting away with it, although lately dma-debug has been catching
> a few of those issues.
Ping? What happened to this set of bug fixes?