In preparation for reusing this helper in another epoll setup helper,
abstract it out.
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
---
fs/eventpoll.c | 28 ++++++++++++++++++----------
1 file changed, 18 insertions(+), 10 deletions(-)
diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index 01edbee5c766..3cbd290503c7 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -2016,6 +2016,22 @@ int epoll_wait_remove(struct file *file, struct wait_queue_entry *wait)
return -EINVAL;
}
+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;
+}
+
/**
* ep_poll - Retrieves ready events, and delivers them to the caller-supplied
* event buffer.
@@ -2067,17 +2083,9 @@ 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)
--
2.47.2
