Return-Path: linux-nfs-owner@vger.kernel.org Received: from mail-ie0-f169.google.com ([209.85.223.169]:57080 "EHLO mail-ie0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755765AbaGIQ6k (ORCPT ); Wed, 9 Jul 2014 12:58:40 -0400 Subject: [PATCH v2 15/21] xprtrdma: Disable completions for LOCAL_INV Work Requests From: Chuck Lever To: linux-rdma@vger.kernel.org, linux-nfs@vger.kernel.org Date: Wed, 09 Jul 2014 12:58:38 -0400 Message-ID: <20140709165838.3496.17169.stgit@manet.1015granger.net> In-Reply-To: <20140709163326.3496.37893.stgit@manet.1015granger.net> References: <20140709163326.3496.37893.stgit@manet.1015granger.net> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Sender: linux-nfs-owner@vger.kernel.org List-ID: Instead of relying on a completion to change the state of an FRMR to FRMR_IS_INVALID, set it in advance. If an error occurs, a completion will fire anyway and mark the FRMR FRMR_IS_STALE. Signed-off-by: Chuck Lever --- net/sunrpc/xprtrdma/verbs.c | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-) diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c index e83eda6..8eef343 100644 --- a/net/sunrpc/xprtrdma/verbs.c +++ b/net/sunrpc/xprtrdma/verbs.c @@ -154,12 +154,8 @@ rpcrdma_sendcq_process_wc(struct ib_wc *wc) if (wc->wr_id == 0ULL) return; - if (wc->status != IB_WC_SUCCESS) { + if (wc->status != IB_WC_SUCCESS) frmr->r.frmr.fr_state = FRMR_IS_STALE; - return; - } - - frmr->r.frmr.fr_state = FRMR_IS_INVALID; } static int @@ -1369,12 +1365,11 @@ rpcrdma_retry_local_inv(struct rpcrdma_mw *r, struct rpcrdma_ia *ia) dprintk("RPC: %s: FRMR %p is stale\n", __func__, r); /* When this FRMR is re-inserted into rb_mws, it is no longer stale */ - r->r.frmr.fr_state = FRMR_IS_VALID; + r->r.frmr.fr_state = FRMR_IS_INVALID; memset(&invalidate_wr, 0, sizeof(invalidate_wr)); invalidate_wr.wr_id = (unsigned long)(void *)r; invalidate_wr.opcode = IB_WR_LOCAL_INV; - invalidate_wr.send_flags = IB_SEND_SIGNALED; invalidate_wr.ex.invalidate_rkey = r->r.frmr.fr_mr->rkey; DECR_CQCOUNT(&r_xprt->rx_ep); @@ -1787,10 +1782,11 @@ rpcrdma_deregister_frmr_external(struct rpcrdma_mr_seg *seg, struct ib_send_wr invalidate_wr, *bad_wr; int rc; + seg1->mr_chunk.rl_mw->r.frmr.fr_state = FRMR_IS_INVALID; + memset(&invalidate_wr, 0, sizeof invalidate_wr); invalidate_wr.wr_id = (unsigned long)(void *)seg1->mr_chunk.rl_mw; invalidate_wr.opcode = IB_WR_LOCAL_INV; - invalidate_wr.send_flags = IB_SEND_SIGNALED; invalidate_wr.ex.invalidate_rkey = seg1->mr_chunk.rl_mw->r.frmr.fr_mr->rkey; DECR_CQCOUNT(&r_xprt->rx_ep); @@ -1799,9 +1795,12 @@ rpcrdma_deregister_frmr_external(struct rpcrdma_mr_seg *seg, rpcrdma_unmap_one(ia, seg++); rc = ib_post_send(ia->ri_id->qp, &invalidate_wr, &bad_wr); read_unlock(&ia->ri_qplock); - if (rc) + if (rc) { + /* Force rpcrdma_buffer_get() to retry */ + seg1->mr_chunk.rl_mw->r.frmr.fr_state = FRMR_IS_STALE; dprintk("RPC: %s: failed ib_post_send for invalidate," " status %i\n", __func__, rc); + } return rc; }