linux-kernel - [PATCH 5.12 210/700] fs: dlm: cancel work sync othercon

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Message-Id: <20210712060956.559252972@linuxfoundation.org>
Date:   Mon, 12 Jul 2021 08:04:53 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Alexander Aring <aahringo@...hat.com>,
        David Teigland <teigland@...hat.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.12 210/700] fs: dlm: cancel work sync othercon

From: Alexander Aring <aahringo@...hat.com>

[ Upstream commit c6aa00e3d20c2767ba3f57b64eb862572b9744b3 ]

These rx tx flags arguments are for signaling close_connection() from
which worker they are called. Obviously the receive worker cannot cancel
itself and vice versa for swork. For the othercon the receive worker
should only be used, however to avoid deadlocks we should pass the same
flags as the original close_connection() was called.

Signed-off-by: Alexander Aring <aahringo@...hat.com>
Signed-off-by: David Teigland <teigland@...hat.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 fs/dlm/lowcomms.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index 01b672cee783..7e6736c70e11 100644
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -714,7 +714,7 @@ static void close_connection(struct connection *con, bool and_other,
 
 	if (con->othercon && and_other) {
 		/* Will only re-enter once. */
-		close_connection(con->othercon, false, true, true);
+		close_connection(con->othercon, false, tx, rx);
 	}
 
 	con->rx_leftover = 0;
-- 
2.30.2