linux-kernel - [PATCH 4.1 100/202] disabling oplocks/leases via module parm enable

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Message-Id: <20151018014906.473077012@linuxfoundation.org>
Date:	Sat, 17 Oct 2015 18:58:03 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	Steve French <steve.french@...marydata.com>,
	Chandrika Srinivasan <chandrika.srinivasan@...rix.com>
Subject: [PATCH 4.1 100/202] disabling oplocks/leases via module parm enable_oplocks broken for SMB3

4.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Steve French <smfrench@...il.com>

commit e0ddde9d44e37fbc21ce893553094ecf1a633ab5 upstream.

leases (oplocks) were always requested for SMB2/SMB3 even when oplocks
disabled in the cifs.ko module.

Signed-off-by: Steve French <steve.french@...marydata.com>
Reviewed-by: Chandrika Srinivasan <chandrika.srinivasan@...rix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/cifs/smb2ops.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -50,9 +50,13 @@ change_conf(struct TCP_Server_Info *serv
 		break;
 	default:
 		server->echoes = true;
-		server->oplocks = true;
+		if (enable_oplocks) {
+			server->oplocks = true;
+			server->oplock_credits = 1;
+		} else
+			server->oplocks = false;
+
 		server->echo_credits = 1;
-		server->oplock_credits = 1;
 	}
 	server->credits -= server->echo_credits + server->oplock_credits;
 	return 0;


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