diff options
Diffstat (limited to 'net/sunrpc')
| -rw-r--r-- | net/sunrpc/xprtrdma/svc_rdma_sendto.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/net/sunrpc/xprtrdma/svc_rdma_sendto.c b/net/sunrpc/xprtrdma/svc_rdma_sendto.c index f1f5c7b58fce..b6fc9299b472 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_sendto.c +++ b/net/sunrpc/xprtrdma/svc_rdma_sendto.c @@ -316,12 +316,17 @@ flushed: * @rdma: transport on which to post the WR * @ctxt: send ctxt with a Send WR ready to post * + * Copy fields in @ctxt to stack variables in order to guarantee + * that these values remain available after the ib_post_send() call. + * In some error flow cases, svc_rdma_wc_send() releases @ctxt. + * * Returns zero if the Send WR was posted successfully. Otherwise, a * negative errno is returned. */ int svc_rdma_send(struct svcxprt_rdma *rdma, struct svc_rdma_send_ctxt *ctxt) { struct ib_send_wr *wr = &ctxt->sc_send_wr; + struct rpc_rdma_cid cid = ctxt->sc_cid; int ret; might_sleep(); @@ -337,12 +342,12 @@ int svc_rdma_send(struct svcxprt_rdma *rdma, struct svc_rdma_send_ctxt *ctxt) if ((atomic_dec_return(&rdma->sc_sq_avail) < 0)) { svc_rdma_wake_send_waiters(rdma, 1); percpu_counter_inc(&svcrdma_stat_sq_starve); - trace_svcrdma_sq_full(rdma, &ctxt->sc_cid); + trace_svcrdma_sq_full(rdma, &cid); wait_event(rdma->sc_send_wait, atomic_read(&rdma->sc_sq_avail) > 0); if (test_bit(XPT_CLOSE, &rdma->sc_xprt.xpt_flags)) return -ENOTCONN; - trace_svcrdma_sq_retry(rdma, &ctxt->sc_cid); + trace_svcrdma_sq_retry(rdma, &cid); continue; } @@ -353,7 +358,7 @@ int svc_rdma_send(struct svcxprt_rdma *rdma, struct svc_rdma_send_ctxt *ctxt) return 0; } - trace_svcrdma_sq_post_err(rdma, &ctxt->sc_cid, ret); + trace_svcrdma_sq_post_err(rdma, &cid, ret); svc_xprt_deferred_close(&rdma->sc_xprt); svc_rdma_wake_send_waiters(rdma, 1); return ret; |