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[2/4] CIFS: reconnect thread reschedule itself

Message ID 1490743614-5439-3-git-send-email-germano.percossi@citrix.com (mailing list archive)
State New, archived
Headers show

Commit Message

Germano Percossi March 28, 2017, 11:26 p.m. UTC 
In case of error, smb2_reconnect_server reschedule itself
with a delay, to avoid being too aggressive.

Signed-off-by: Germano Percossi <germano.percossi@citrix.com>
---
 fs/cifs/smb2pdu.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)
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Patch

diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index efe167c..523e3f1 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -2177,6 +2177,9 @@  void smb2_reconnect_server(struct work_struct *work)
 	struct cifs_tcon *tcon, *tcon2;
 	struct list_head tmp_list;
 	int tcon_exist = false;
+	int rc;
+	int resched = false;
+
 
 	/* Prevent simultaneous reconnects that can corrupt tcon->rlist list */
 	mutex_lock(&server->reconnect_mutex);
@@ -2204,13 +2207,20 @@  void smb2_reconnect_server(struct work_struct *work)
 	spin_unlock(&cifs_tcp_ses_lock);
 
 	list_for_each_entry_safe(tcon, tcon2, &tmp_list, rlist) {
-		if (!smb2_reconnect(SMB2_INTERNAL_CMD, tcon))
+		rc = smb2_reconnect(SMB2_INTERNAL_CMD, tcon);
+		if (!rc) {
 			cifs_reopen_persistent_handles(tcon);
+		} else {
+			resched = true;
+		}
 		list_del_init(&tcon->rlist);
 		cifs_put_tcon(tcon);
 	}
 
 	cifs_dbg(FYI, "Reconnecting tcons finished\n");
+	if (resched) {
+		queue_delayed_work(cifsiod_wq, &server->reconnect, 2 * HZ);
+	}
 	mutex_unlock(&server->reconnect_mutex);
 
 	/* now we can safely release srv struct */