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xprtrdma: Fix helper that drains the transport

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We want to drain only the RQ first. Otherwise the transport can
deadlock on ->close if there are outstanding Send completions.

Fixes: 6d2d0ee27c ("xprtrdma: Replace rpcrdma_receive_wq ... ")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: stable@vger.kernel.org # v5.0+
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Chuck Lever 2019-04-09 17:04:09 -04:00 committed by Trond Myklebust
parent 29e7ca715f
commit e1ede312f1
1 changed files with 1 additions and 1 deletions
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net/sunrpc/xprtrdma/verbs.c
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@ -90,7 +90,7 @@ static void rpcrdma_xprt_drain(struct rpcrdma_xprt *r_xprt)
/* Flush Receives, then wait for deferred Reply work
* to complete.
*/
ib_drain_qp(ia->ri_id->qp);
ib_drain_rq(ia->ri_id->qp);
drain_workqueue(buf->rb_completion_wq);
/* Deferred Reply processing might have scheduled