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IB/mlx5: Fix clean_mr() to work in the expected order

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Any dma map underlying the MR should only be freed once the MR is fenced
at the hardware.

As of the above we first destroy the MKEY and just after that can safely
call to dma_unmap_single().

Link: https://lore.kernel.org/r/20190723065733.4899-6-leon@kernel.org
Cc: <stable@vger.kernel.org> # 4.3
Fixes: 8a187ee52b ("IB/mlx5: Support the new memory registration API")
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Reviewed-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Yishai Hadas 2019-07-23 09:57:28 +03:00 committed by Jason Gunthorpe
parent 9ec4483a3f
commit b9332dad98
1 changed files with 3 additions and 3 deletions
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6
drivers/infiniband/hw/mlx5/mr.c
View file

@ -1582,10 +1582,10 @@ static void clean_mr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr)
mr->sig = NULL;
}
mlx5_free_priv_descs(mr);
if (!allocated_from_cache)
if (!allocated_from_cache) {
destroy_mkey(dev, mr);
mlx5_free_priv_descs(mr);
}
}
static void dereg_mr(struct mlx5_ib_dev *dev, struct mlx5_ib_mr *mr)