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Message-Id: <20191219183103.389385952@linuxfoundation.org>
Date: Thu, 19 Dec 2019 19:34:20 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Long Li <longli@...rosoft.com>,
Steve French <stfrench@...rosoft.com>
Subject: [PATCH 5.4 28/80] cifs: smbd: Return -EAGAIN when transport is reconnecting
From: Long Li <longli@...rosoft.com>
commit 4357d45f50e58672e1d17648d792f27df01dfccd upstream.
During reconnecting, the transport may have already been destroyed and is in
the process being reconnected. In this case, return -EAGAIN to not fail and
to retry this I/O.
Signed-off-by: Long Li <longli@...rosoft.com>
Cc: stable@...r.kernel.org
Signed-off-by: Steve French <stfrench@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
fs/cifs/transport.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -319,8 +319,11 @@ __smb_send_rqst(struct TCP_Server_Info *
int val = 1;
__be32 rfc1002_marker;
- if (cifs_rdma_enabled(server) && server->smbd_conn) {
- rc = smbd_send(server, num_rqst, rqst);
+ if (cifs_rdma_enabled(server)) {
+ /* return -EAGAIN when connecting or reconnecting */
+ rc = -EAGAIN;
+ if (server->smbd_conn)
+ rc = smbd_send(server, num_rqst, rqst);
goto smbd_done;
}
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