From 3b03ad5929e3ba5e1c3db7a70d426f883be061c2 Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Fri, 15 Jul 2011 13:53:06 +0200 Subject: [PATCH] drbd: Do not mod_timer() with a past time In case we can not find out why the request takes too long (happens e.g. when IO got suspended on DRBD level). rearm the timer with a reasonable value. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- drivers/block/drbd/drbd_req.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c index 8fa51cda3b7e..d0f73b3a6796 100644 --- a/drivers/block/drbd/drbd_req.c +++ b/drivers/block/drbd/drbd_req.c @@ -1083,7 +1083,7 @@ void request_timer_fn(unsigned long data) struct drbd_request *req; /* oldest request */ struct list_head *le; struct net_conf *nc; - unsigned long ent = 0, dt = 0, et; /* effective timeout = ko_count * timeout */ + unsigned long ent = 0, dt = 0, et, nt; /* effective timeout = ko_count * timeout */ rcu_read_lock(); nc = rcu_dereference(tconn->net_conf); @@ -1122,6 +1122,7 @@ void request_timer_fn(unsigned long data) __drbd_chk_io_error(mdev, 1); } } + nt = (time_is_before_eq_jiffies(req->start_time + et) ? jiffies : req->start_time) + et; spin_unlock_irq(&tconn->req_lock); - mod_timer(&mdev->request_timer, req->start_time + et); + mod_timer(&mdev->request_timer, nt); } -- 2.20.1