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Message-ID: <5179EC7C.5060208@huawei.com> Date: Fri, 26 Apr 2013 10:54:52 +0800 From: Li Zefan <lizefan@...wei.com> To: Tejun Heo <tj@...nel.org> CC: Cgroups <cgroups@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org> Subject: [PATCH] cgroup: restore the call to eventfd->poll() I mistakenly removed the call to eventfd->poll() while I was actually intending to remove the return value... Calling evenfd->poll() will hook cgroup_event_wake() to the poll waitqueue, which will be called to unregister eventfd when rmdir a cgroup or close eventfd. Signed-off-by: Li Zefan <lizefan@...wei.com> --- kernel/cgroup.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/cgroup.c b/kernel/cgroup.c index a45aa12..4b0f2ef 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -3882,6 +3882,8 @@ static int cgroup_write_event_control(struct cgroup *cgrp, struct cftype *cft, if (ret) goto fail; + efile->f_op->poll(efile, &event->pt); + /* * 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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