linux-kernel - linux-next: manual merge of the rdma tree with the rdma-fixes tree

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Date:   Tue, 1 May 2018 10:10:17 +1000
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Doug Ledford <dledford@...hat.com>,
        Jason Gunthorpe <jgg@...lanox.com>
Cc:     Linux-Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Zhu Yanjun <yanjun.zhu@...cle.com>
Subject: linux-next: manual merge of the rdma tree with the rdma-fixes tree

Hi all,

Today's linux-next merge of the rdma tree got a conflict in:

  drivers/infiniband/sw/rxe/rxe_resp.c

between commit:

  9fd4350ba895 ("B/rxe: avoid double kfree_skb")

from the rdma-fixes tree and commit:

  2e47350789eb ("IB/rxe: optimize the function duplicate_request")

from the rdma tree.

I fixed it up (I think - see below) and can carry the fix as necessary.
This is now fixed as far as linux-next is concerned, but any non trivial
conflicts should be mentioned to your upstream maintainer when your tree
is submitted for merging.  You may also want to consider cooperating
with the maintainer of the conflicting tree to minimise any particularly
complex conflicts.

-- 
Cheers,
Stephen Rothwell

diff --cc drivers/infiniband/sw/rxe/rxe_resp.c
index 955ff3b6da9c,c45c1ff24497..000000000000
--- a/drivers/infiniband/sw/rxe/rxe_resp.c
+++ b/drivers/infiniband/sw/rxe/rxe_resp.c
@@@ -1121,23 -1123,13 +1120,12 @@@ static enum resp_states duplicate_reque
  		/* Find the operation in our list of responder resources. */
  		res = find_resource(qp, pkt->psn);
  		if (res) {
- 			struct sk_buff *skb_copy;
- 
- 			skb_copy = skb_clone(res->atomic.skb, GFP_ATOMIC);
- 			if (skb_copy) {
- 				rxe_add_ref(qp); /* for the new SKB */
- 			} else {
- 				pr_warn("Couldn't clone atomic resp\n");
- 				rc = RESPST_CLEANUP;
- 				goto out;
- 			}
- 
+ 			skb_get(res->atomic.skb);
  			/* Resend the result. */
  			rc = rxe_xmit_packet(to_rdev(qp->ibqp.device), qp,
- 					     pkt, skb_copy);
+ 					     pkt, res->atomic.skb);
  			if (rc) {
  				pr_err("Failed resending result. This flow is not handled - skb ignored\n");
- 				rxe_drop_ref(qp);
 -				kfree_skb(res->atomic.skb);
  				rc = RESPST_CLEANUP;
  				goto out;
  			}

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