Merge v6.14.4linux-rolling-stable

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 27 insertions, 11 deletions

diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index 7c0980db77b3..c01234bbac49 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -1980,6 +1980,30 @@ static int ep_autoremove_wake_function(struct wait_queue_entry *wq_entry,
 	return ret;
 }
 
+static int ep_try_send_events(struct eventpoll *ep,
+			      struct epoll_event __user *events, int maxevents)
+{
+	int res;
+
+	/*
+	 * Try to transfer events to user space. In case we get 0 events and
+	 * there's still timeout left over, we go trying again in search of
+	 * more luck.
+	 */
+	res = ep_send_events(ep, events, maxevents);
+	if (res > 0)
+		ep_suspend_napi_irqs(ep);
+	return res;
+}
+
+static int ep_schedule_timeout(ktime_t *to)
+{
+	if (to)
+		return ktime_after(*to, ktime_get());
+	else
+		return 1;
+}
+
 /**
  * ep_poll - Retrieves ready events, and delivers them to the caller-supplied
  *           event buffer.
@@ -2031,17 +2055,9 @@ static int ep_poll(struct eventpoll *ep, struct epoll_event __user *events,
 
 	while (1) {
 		if (eavail) {
-			/*
-			 * Try to transfer events to user space. In case we get
-			 * 0 events and there's still timeout left over, we go
-			 * trying again in search of more luck.
-			 */
-			res = ep_send_events(ep, events, maxevents);
-			if (res) {
-				if (res > 0)
-					ep_suspend_napi_irqs(ep);
+			res = ep_try_send_events(ep, events, maxevents);
+			if (res)
 				return res;
-			}
 		}
 
 		if (timed_out)
@@ -2095,7 +2111,7 @@ static int ep_poll(struct eventpoll *ep, struct epoll_event __user *events,
 
 		write_unlock_irq(&ep->lock);
 
-		if (!eavail)
+		if (!eavail && ep_schedule_timeout(to))
 			timed_out = !schedule_hrtimeout_range(to, slack,
 							      HRTIMER_MODE_ABS);
 		__set_current_state(TASK_RUNNING);