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xprtrdma: Do not wait if ib_post_send() fails 

If ib_post_send() in ro_unmap_sync() fails, the WRs have not been
posted, no completions will fire, and wait_for_completion() will
wait forever. Skip the wait in that case.

To ensure the MRs are invalid, disconnect.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Chuck Lever 2016-03-04 11:28:01 -05:00 committed by Anna Schumaker
parent 821c791a0b
commit b892a699ce
1 changed files with 5 additions and 1 deletions
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6
net/sunrpc/xprtrdma/frwr_ops.c
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@ -520,14 +520,18 @@ frwr_op_unmap_sync(struct rpcrdma_xprt *r_xprt, struct rpcrdma_req *req)
* unless ri_id->qp is a valid pointer.
*/
rc = ib_post_send(ia->ri_id->qp, invalidate_wrs, &bad_wr);
if (rc)
if (rc) {
pr_warn("%s: ib_post_send failed %i\n", __func__, rc);
rdma_disconnect(ia->ri_id);
goto unmap;
}
wait_for_completion(&f->fr_linv_done);
/* ORDER: Now DMA unmap all of the req's MRs, and return
* them to the free MW list.
*/
unmap:
for (i = 0, nchunks = req->rl_nchunks; nchunks; nchunks--) {
seg = &req->rl_segments[i];