netdev - [PATCH net v3 5/7] net/rds: Set fr_state only to FRMR_IS_FREE if IB_WR_LOCAL

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Date:   Tue, 16 Jul 2019 15:29:12 -0700
From:   Gerd Rausch <gerd.rausch@...cle.com>
To:     Santosh Shilimkar <santosh.shilimkar@...cle.com>,
        netdev@...r.kernel.org, linux-rdma@...r.kernel.org,
        rds-devel@....oracle.com
Cc:     David Miller <davem@...emloft.net>
Subject: [PATCH net v3 5/7] net/rds: Set fr_state only to FRMR_IS_FREE if
 IB_WR_LOCAL_INV had been successful

Fix a bug where fr_state first goes to FRMR_IS_STALE, because of a failure
of operation IB_WR_LOCAL_INV, but then gets set back to "FRMR_IS_FREE"
uncoditionally, even though the operation failed.

Signed-off-by: Gerd Rausch <gerd.rausch@...cle.com>
---
 net/rds/ib_frmr.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/rds/ib_frmr.c b/net/rds/ib_frmr.c
index 708c553c3da5..adaa8e99e5a9 100644
--- a/net/rds/ib_frmr.c
+++ b/net/rds/ib_frmr.c
@@ -309,7 +309,8 @@ void rds_ib_mr_cqe_handler(struct rds_ib_connection *ic, struct ib_wc *wc)
 	}
 
 	if (frmr->fr_inv) {
-		frmr->fr_state = FRMR_IS_FREE;
+		if (frmr->fr_state == FRMR_IS_INUSE)
+			frmr->fr_state = FRMR_IS_FREE;
 		frmr->fr_inv = false;
 		wake_up(&frmr->fr_inv_done);
 	}
-- 
2.22.0