> James, > I’m pretty sure this port to upstream is flawed. See below Yep. I missed that line. Thanks for review. Greg you can drop this one. I will submit a updated version soon. This patch series is not order dependent so the other patches are safe to land. > On 5/9/16, 7:53 AM, "lustre-devel on behalf of James Simmons" <lustre-devel-bounces@xxxxxxxxxxxxxxxx on behalf of jsimmons@xxxxxxxxxxxxx> wrote: > >>From: Dmitry Eremin <dmitry.eremin@xxxxxxxxx> >> >>Decrease cap.max_send_wr until it is accepted by rdma_create_qp() >> >>Signed-off-by: Dmitry Eremin <dmitry.eremin@xxxxxxxxx> >>Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-7124 >>Reviewed-on: http://review.whamcloud.com/18347 >>Reviewed-by: Olaf Weber <olaf@xxxxxxx> >>Reviewed-by: Doug Oucharek <doug.s.oucharek@xxxxxxxxx> >>Reviewed-by: Oleg Drokin <oleg.drokin@xxxxxxxxx> >>Signed-off-by: James Simmons <jsimmons@xxxxxxxxxxxxx> >>--- >> .../staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c | 11 ++++++++++- >> 1 files changed, 10 insertions(+), 1 deletions(-) >> >>diff --git a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c >>index d99b4fa..bc179a2 100644 >>--- a/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c >>+++ b/drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c >>@@ -768,7 +768,12 @@ kib_conn_t *kiblnd_create_conn(kib_peer_t *peer, struct rdma_cm_id *cmid, >> >> conn->ibc_sched = sched; >> >> - rc = rdma_create_qp(cmid, conn->ibc_hdev->ibh_pd, init_qp_attr); >> + do { >> + rc = rdma_create_qp(cmid, conn->ibc_hdev->ibh_pd, init_qp_attr); >> + if (!rc || init_qp_attr->cap.max_send_wr < 16) >> + break; > > I think the loop here is missing code to decrease the max_send_wr value. In current master it’s > > init_qp_attr->cap.max_send_wr -= init_qp_attr->cap.max_send_wr / 4; > >>+ } while (rc); >>+ >> if (rc) { >> CERROR("Can't create QP: %d, send_wr: %d, recv_wr: %d\n", >> rc, init_qp_attr->cap.max_send_wr, >>@@ -776,6 +781,10 @@ kib_conn_t *kiblnd_create_conn(kib_peer_t *peer, struct rdma_cm_id *cmid, >> goto failed_2; >> } >> >>+ if (init_qp_attr->cap.max_send_wr != IBLND_SEND_WRS(conn)) >>+ CDEBUG(D_NET, "original send wr %d, created with %d\n", >>+ IBLND_SEND_WRS(conn), init_qp_attr->cap.max_send_wr); >>+ >> LIBCFS_FREE(init_qp_attr, sizeof(*init_qp_attr)); >> >> /* 1 ref for caller and each rxmsg */ >> -- >> 1.7.1 >>
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