@@ -536,3 +536,18 @@ void cifs_swn_dump(struct seq_file *m)
mutex_unlock(&cifs_swnreg_idr_mutex);
seq_puts(m, "\n");
}
+
+void cifs_swn_check(void)
+{
+ struct cifs_swn_reg *swnreg;
+ int id;
+ int ret;
+
+ mutex_lock(&cifs_swnreg_idr_mutex);
+ idr_for_each_entry(&cifs_swnreg_idr, swnreg, id) {
+ ret = cifs_swn_send_register_message(swnreg);
+ if (ret < 0)
+ cifs_dbg(FYI, "%s: Failed to send register message: %d\n", __func__, ret);
+ }
+ mutex_unlock(&cifs_swnreg_idr_mutex);
+}
@@ -20,4 +20,6 @@ extern int cifs_swn_notify(struct sk_buff *skb, struct genl_info *info);
extern void cifs_swn_dump(struct seq_file *m);
+extern void cifs_swn_check(void);
+
#endif /* _CIFS_SWN_H */
@@ -613,6 +613,11 @@ cifs_echo_request(struct work_struct *work)
cifs_dbg(FYI, "Unable to send echo request to server: %s\n",
server->hostname);
+#ifdef CONFIG_CIFS_SWN_UPCALL
+ /* Check witness registrations */
+ cifs_swn_check();
+#endif
+
requeue_echo:
queue_delayed_work(cifsiod_wq, &server->echo, server->echo_interval);
}
If the daemon starts after mounting a share, or if it crashes, this provides a mechanism to register again. Signed-off-by: Samuel Cabrero <scabrero@suse.de> --- fs/cifs/cifs_swn.c | 15 +++++++++++++++ fs/cifs/cifs_swn.h | 2 ++ fs/cifs/connect.c | 5 +++++ 3 files changed, 22 insertions(+)