[PATCH AUTOSEL 6.14 110/642] dlm: make tcp still work in multi-link env

Sasha Levin
2025-05-05T22:19:10Z

From: Heming Zhao <heming.zhao@suse.com>

[ Upstream commit 03d2b62208a336a3bb984b9465ef6d89a046ea22 ]

This patch bypasses multi-link errors in TCP mode, allowing dlm
to operate on the first tcp link.

Signed-off-by: Heming Zhao <heming.zhao@suse.com>
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/dlm/lowcomms.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index d28141829c051..70abd4da17a63 100644
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -1826,8 +1826,8 @@ static int dlm_tcp_listen_validate(void)
{
/* We don't support multi-homed hosts */
if (dlm_local_count > 1) {
- log_print("TCP protocol can't handle multi-homed hosts, try SCTP");
- return -EINVAL;
+ log_print("Detect multi-homed hosts but use only the first IP address.");
+ log_print("Try SCTP, if you want to enable multi-link.");
}

return 0;
--
2.39.5