Re: [PATCH rdma-next 1/2] RDMA/mlx5: Fix MR cache debugfs in switchdev mode

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On Thu, Feb 02, 2023 at 09:56:51AM -0400, Jason Gunthorpe wrote:
> On Thu, Feb 02, 2023 at 11:03:06AM +0200, Leon Romanovsky wrote:
> > From: Leon Romanovsky <leonro@xxxxxxxxxx>
> > 
> > Block MR cache debugfs creation while in switchdev mode and add missing
> > debugfs cleanup in error path.
> 
> Why does switchdev have anything to do with this?
> 

Because we always had the following code in cleanup:
   697 static void mlx5_mkey_cache_debugfs_cleanup(struct mlx5_ib_dev *dev)
   698 {
   699         if (!mlx5_debugfs_root || dev->is_rep)
   700                 return;
   701

MR cache shouldn't be used at all for IB representors, and more
comprehensive patch will take more work than this simple solution.

Thanks

> Jason



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