From: Eric Dumazet <eric.dumazet@gmail.com>
To: horseriver <horserivers@gmail.com>
Cc: netdev@vger.kernel.org
Subject: Re: when and where does ep_poll_callback be called ?
Date: Wed, 13 Mar 2013 06:00:52 +0100 [thread overview]
Message-ID: <1363150852.13690.29.camel@edumazet-glaptop> (raw)
In-Reply-To: <20130114011115.GG2743@debian.localdomain>
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;
/*
prev parent reply other threads:[~2013-03-13 5:00 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-14 1:11 when and where does ep_poll_callback be called ? horseriver
2013-01-14 16:35 ` Randy Dunlap
2013-01-14 7:52 ` horseriver
2013-03-13 5:00 ` Eric Dumazet [this message]
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