net/smc: delete rkey first before switching to unused

Once RMBs are flagged as unused they are candidates for reuse. Thus the LLC DELETE RKEY operaton should be made before flagging the RMB as unused. Fixes: c7674c0 ("net/smc: unregister rkeys of unused buffer") Signed-off-by: Ursula Braun <[email protected]> Signed-off-by: David S. Miller <[email protected]>
ambv · Feb 4, 2019 · a5e0431 · a5e0431
1 parent b8649ef
commit a5e0431
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c
@@ -302,13 +302,13 @@ static void smc_buf_unuse(struct smc_connection *conn,
 		conn->sndbuf_desc->used = 0;
 	if (conn->rmb_desc) {
 		if (!conn->rmb_desc->regerr) {
-			conn->rmb_desc->used = 0;
 			if (!lgr->is_smcd) {
 				/* unregister rmb with peer */
 				smc_llc_do_delete_rkey(
 						&lgr->lnk[SMC_SINGLE_LINK],
 						conn->rmb_desc);
 			}
+			conn->rmb_desc->used = 0;
 		} else {
 			/* buf registration failed, reuse not possible */
 			write_lock_bh(&lgr->rmbs_lock);