From: Li Zefan <lizefan@huawei.com>
To: Tejun Heo <tj@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>, Cgroups <cgroups@vger.kernel.org>
Subject: [PATCH 5/8] cgroup: remove useless code in cgroup_write_event_control()
Date: Tue, 12 Mar 2013 14:50:58 +0800 [thread overview]
Message-ID: <513ED052.7080907@huawei.com> (raw)
In-Reply-To: <513ED010.5060906@huawei.com>
eventfd_poll() never returns POLLHUP.
Signed-off-by: Li Zefan <lizefan@huawei.com>
---
kernel/cgroup.c | 6 ------
1 file changed, 6 deletions(-)
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 58ae040..3206137 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -3938,12 +3938,6 @@ static int cgroup_write_event_control(struct cgroup *cgrp, struct cftype *cft,
if (ret)
goto fail;
- if (efile->f_op->poll(efile, &event->pt) & POLLHUP) {
- event->cft->unregister_event(cgrp, event->cft, event->eventfd);
- ret = 0;
- goto fail;
- }
-
/*
* Events should be removed after rmdir of cgroup directory, but before
* destroying subsystem state objects. Let's take reference to cgroup
--
1.8.0.2
next prev parent reply other threads:[~2013-03-12 6:50 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-12 6:49 [PATCH 0/8] cgroup: a bunch of cleanups Li Zefan
2013-03-12 6:49 ` Li Zefan
2013-03-12 6:50 ` [PATCH 1/8] cgroup: remove cgroup_is_descentant() Li Zefan
2013-03-12 6:50 ` [PATCH 2/8] cgroup: remove unused variables in cgroup_destroy_locked() Li Zefan
2013-03-12 6:50 ` [PATCH 3/8] cgroup: hold cgroup_mutex before calling css_offline() Li Zefan
2013-03-12 6:50 ` [PATCH 4/8] cgroup: don't bother to resize pid array Li Zefan
2013-03-12 6:50 ` Li Zefan [this message]
[not found] ` <513ED010.5060906-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2013-03-12 6:51 ` [PATCH 0/8] cgroup: a bunch of cleanups Li Zefan
2013-03-12 6:51 ` Li Zefan
2013-03-12 6:52 ` [PATCH 7/8] cgroup: fix an almost harmless off-by-one bug Li Zefan
2013-03-12 6:52 ` Li Zefan
2013-03-12 6:52 ` [PATCH 8/8] cgroup: consolidate cgroup_attach_task() and cgroup_attach_proc() Li Zefan
2013-03-12 6:52 ` Li Zefan
2013-03-12 22:38 ` [PATCH 0/8] cgroup: a bunch of cleanups Tejun Heo
2013-03-12 22:38 ` Tejun Heo
[not found] ` <20130312223839.GM25266-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
2013-03-13 1:06 ` Li Zefan
2013-03-13 1:06 ` Li Zefan
2013-03-12 6:53 ` [PATCH 6/8] cgroup: remove unneeded includes from cgroup.h Li Zefan
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