On Wed, May 31, 2017 at 12:44:26PM -0700, Christoph Hellwig wrote:
> On Wed, May 31, 2017 at 07:18:19PM +0300, Leon Romanovsky wrote:
> > I think that you are hitting the side effect of these commits
> > 7d0cc6edcc70 ("IB/mlx5: Add MR cache for large UMR regions") and
> > 81713d3788d2 ("IB/mlx5: Add implicit MR support")
> >
> > Do you have CONFIG_INFINIBAND_ON_DEMAND_PAGING on? Can you disable it
> > for the test?
>
> Eww. Please make sure mlx5 gracefully handles cases where it can't use
> crazy amount of memory, including disabling features like the above
> at runtime when the required resources aren't available.
Right, the real consumer of memory in mlx5_ib is mr_cache, so the
question is how can we check in advance if we have enough memory
without calling allocations with GFP_NOWARN flag.
> --
> To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at http://vger.kernel.org/majordomo-info.html
Attachment:
signature.asc
Description: PGP signature
