DLM: retry rcom when dlm_wait_function is timed out.
If a node sends a DLM_RCOM_STATUS command and an error occurs on the
receiving side, the DLM_RCOM_STATUS_REPLY response may not be returned.
We retransmitted the DLM_RCOM_STATUS command so that we do not wait for
an infinite response.
Signed-off-by: Tadashi Miyauchi <miyauchi@toshiba-tops.co.jp>
Signed-off-by: Tsutomu Owa <tsutomu.owa@toshiba.co.jp>
Signed-off-by: David Teigland <teigland@redhat.com>
diff --git a/fs/dlm/rcom.c b/fs/dlm/rcom.c
index f3f5e72..4ff061d 100644
--- a/fs/dlm/rcom.c
+++ b/fs/dlm/rcom.c
@@ -155,6 +155,7 @@ int dlm_rcom_status(struct dlm_ls *ls, int nodeid, uint32_t status_flags)
goto out;
}
+retry:
error = create_rcom(ls, nodeid, DLM_RCOM_STATUS,
sizeof(struct rcom_status), &rc, &mh);
if (error)
@@ -169,6 +170,8 @@ int dlm_rcom_status(struct dlm_ls *ls, int nodeid, uint32_t status_flags)
error = dlm_wait_function(ls, &rcom_response);
disallow_sync_reply(ls);
+ if (error == -ETIMEDOUT)
+ goto retry;
if (error)
goto out;
@@ -276,6 +279,7 @@ int dlm_rcom_names(struct dlm_ls *ls, int nodeid, char *last_name, int last_len)
ls->ls_recover_nodeid = nodeid;
+retry:
error = create_rcom(ls, nodeid, DLM_RCOM_NAMES, last_len, &rc, &mh);
if (error)
goto out;
@@ -288,6 +292,8 @@ int dlm_rcom_names(struct dlm_ls *ls, int nodeid, char *last_name, int last_len)
error = dlm_wait_function(ls, &rcom_response);
disallow_sync_reply(ls);
+ if (error == -ETIMEDOUT)
+ goto retry;
out:
return error;
}