From 842594c8775b585c58459e044708c0335b6aa6b7 Mon Sep 17 00:00:00 2001 From: Sagi Grimberg Date: Wed, 5 Jul 2017 09:56:13 +0300 Subject: [PATCH] nvme-rdma: unconditionally recycle the request mr When our RDMA queue-pair is torn down with high load of I/O traffic, we have no way of knowing if the memory region was actually registered by the reg_mr work request as it completion flushes with error (hw might have done it or not). So in order to not deal with all this uncertanty, we simply recycle the MR in reinit_request. Reviewed-by: Christoph Hellwig Signed-off-by: Sagi Grimberg --- drivers/nvme/host/rdma.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c index ccdbd99d5a1c..da04df1af231 100644 --- a/drivers/nvme/host/rdma.c +++ b/drivers/nvme/host/rdma.c @@ -272,9 +272,6 @@ 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 (!req->mr->need_inval) - goto out; - ib_dereg_mr(req->mr); req->mr = ib_alloc_mr(dev->pd, IB_MR_TYPE_MEM_REG,