Re: [PATCH rdma-next v3 0/3] SG fix together with update to RDMA umem

From: Jason Gunthorpe
Date: Fri Aug 20 2021 - 12:18:32 EST


On Thu, Jul 29, 2021 at 12:39:10PM +0300, Leon Romanovsky wrote:
> From: Leon Romanovsky <leonro@xxxxxxxxxx>
>
> Changelog:
> v3:
> * Rewrote to new API suggestion
> * Split for more patches
> v2: https://lore.kernel.org/lkml/cover.1626605893.git.leonro@xxxxxxxxxx
> * Changed implementation of first patch, based on our discussion with Christoph.
> https://lore.kernel.org/lkml/YNwaVTT0qmQdxaZz@xxxxxxxxxxxxx/
> v1: https://lore.kernel.org/lkml/cover.1624955710.git.leonro@xxxxxxxxxx/
> * Fixed sg_page with a _dma_ API in the umem.c
> v0: https://lore.kernel.org/lkml/cover.1624361199.git.leonro@xxxxxxxxxx
>
>
> Maor Gottlieb (3):
> lib/scatterlist: Provide a dedicated function to support table append
> lib/scatterlist: Fix wrong update of orig_nents
> RDMA: Use the sg_table directly and remove the opencoded version from
> umem

I'm going to send this into linux-next, last time that triggered some
bug reports.

But overall it looks okay, though some of the sg_append_table is bit
odd. Certainly using the sg_table throughout the RDMA code is big
improvement.

Lets see a v4, reviews/etc and I'll update it.

Jason