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nvme-rdma: Check that reinit_request got a proper mr

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Warn if req->mr is NULL as it should never happen.

Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Sagi Grimberg 2017-10-11 15:29:09 +03:00 committed by Christoph Hellwig
parent 0c5b43b9c1
commit 0fc176dfda
1 changed files with 3 additions and 0 deletions
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3
drivers/nvme/host/rdma.c
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@ -274,6 +274,9 @@ static int nvme_rdma_reinit_request(void *data, struct request *rq)
struct nvme_rdma_request *req = blk_mq_rq_to_pdu(rq);
int ret = 0;
if (WARN_ON_ONCE(!req->mr))
return 0;
ib_dereg_mr(req->mr);
req->mr = ib_alloc_mr(dev->pd, IB_MR_TYPE_MEM_REG,