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Date: Wed, 13 Mar 2013 06:00:52 +0100
From: Eric Dumazet <eric.dumazet@...il.com>
To: horseriver <horserivers@...il.com>
Cc: netdev@...r.kernel.org
Subject: Re: when and where does ep_poll_callback be called ?
On Mon, 2013-01-14 at 09:11 +0800, horseriver wrote:
> hi:
>
>
> I'm studying the epoll module , I can not find ep_poll_callback be called somewhere .
>
>
Thats more a lkml question.
But you can figure it yourself :
diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index 9fec183..c6e7490 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -928,6 +928,7 @@ static int ep_poll_callback(wait_queue_t *wait, unsigned mode, int sync, void *k
struct epitem *epi = ep_item_from_wait(wait);
struct eventpoll *ep = epi->ep;
+ WARN_ON_ONCE(1);
if ((unsigned long)key & POLLFREE) {
ep_pwq_from_wait(wait)->whead = NULL;
/*
--
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