Re: [PATCH v3 4/4] IB/core: disable memory registration of fileystem-dax vmas

[Jason Gunthorpe]

On Wed, Nov 29, 2017 at 10:05:51AM -0800, Dan Williams wrote:
> Until there is a solution to the dma-to-dax vs truncate problem it is
> not safe to allow RDMA to create long standing memory registrations
> against filesytem-dax vmas.
> 
> Cc: Sean Hefty <sean.hefty@xxxxxxxxx>
> Cc: Doug Ledford <dledford@xxxxxxxxxx>
> Cc: Hal Rosenstock <hal.rosenstock@xxxxxxxxx>
> Cc: Jeff Moyer <jmoyer@xxxxxxxxxx>
> Cc: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx>
> Cc: Jason Gunthorpe <jgunthorpe@xxxxxxxxxxxxxxxxxxxx>
> Cc: <linux-rdma@xxxxxxxxxxxxxxx>
> Cc: <stable@xxxxxxxxxxxxxxx>
> Fixes: 3565fce3a659 ("mm, x86: get_user_pages() for dax mappings")
> Reported-by: Christoph Hellwig <hch@xxxxxx>
> Reviewed-by: Christoph Hellwig <hch@xxxxxx>
> Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
>  drivers/infiniband/core/umem.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

No problem here with drivers/rdma. This will go through another tree
with the rest of the series? In which case here is a co-maintainer ack
for this patch:

Acked-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>

Dan, can you please update my address to jgg@xxxxxxxx, thanks :)

Jason