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Subject[PATCH 7/7] cifs: smbd: Return -EAGAIN when transport is reconnecting
Date
From: Long Li <longli@microsoft.com>

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@microsoft.com>
Cc: stable@vger.kernel.org
---
fs/cifs/transport.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index afe66f9cb15e..66fde7bfec4f 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -318,8 +318,11 @@ __smb_send_rqst(struct TCP_Server_Info *server, int num_rqst,
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;
}

--
2.17.1
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