linux-kernel - [PATCH 08/60] staging: lustre: ldlm: Restore connect flags on failure

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Message-Id: <1485648328-2141-9-git-send-email-jsimmons@infradead.org>
Date:   Sat, 28 Jan 2017 19:04:36 -0500
From:   James Simmons <jsimmons@...radead.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        devel@...verdev.osuosl.org,
        Andreas Dilger <andreas.dilger@...el.com>,
        Oleg Drokin <oleg.drokin@...el.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Lustre Development List <lustre-devel@...ts.lustre.org>,
        Jeremy Filizetti <jeremy.filizetti@...il.com>,
        James Simmons <jsimmons@...radead.org>
Subject: [PATCH 08/60] staging: lustre: ldlm: Restore connect flags on failure

From: Jeremy Filizetti <jeremy.filizetti@...il.com>

Restore connect flags on failure of ptlrpc_connect_import()
to prevent an LBUG due to flags mismatch.

Signed-off-by: Jeremy Filizetti <jeremy.filizetti@...il.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-7185
Reviewed-on: http://review.whamcloud.com/16950
Reviewed-by: Andreas Dilger <andreas.dilger@...el.com>
Reviewed-by: Sebastien Buisson <sebastien.buisson@...l.net>
Reviewed-by: John L. Hammond <john.hammond@...el.com>
Signed-off-by: James Simmons <jsimmons@...radead.org>
---
 drivers/staging/lustre/lustre/ldlm/ldlm_lib.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_lib.c b/drivers/staging/lustre/lustre/ldlm/ldlm_lib.c
index 95b8c76..3663c5c 100644
--- a/drivers/staging/lustre/lustre/ldlm/ldlm_lib.c
+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_lib.c
@@ -523,6 +523,8 @@ int client_connect_import(const struct lu_env *env,
 
 	rc = ptlrpc_connect_import(imp);
 	if (rc != 0) {
+		if (data && is_mdc)
+			data->ocd_connect_flags &= ~OBD_CONNECT_MULTIMODRPCS;
 		LASSERT(imp->imp_state == LUSTRE_IMP_DISCON);
 		goto out_ldlm;
 	}
-- 
1.8.3.1