From 18ea43113f5b74a97dd4be9bddbac10d68b1a6ce Mon Sep 17 00:00:00 2001 From: Germano Percossi Date: Fri, 7 Apr 2017 12:29:36 +0100 Subject: CIFS: reconnect thread reschedule itself In case of error, smb2_reconnect_server reschedule itself with a delay, to avoid being too aggressive. Signed-off-by: Germano Percossi Reviewed-by: Pavel Shilovsky CC: Stable Signed-off-by: Steve French --- fs/cifs/smb2pdu.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index 66fa1b941cdf..d09e98bb8584 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -2181,6 +2181,9 @@ 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); @@ -2208,13 +2211,18 @@ 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 */ -- cgit v1.2.3