eventfd_poll() never returns POLLHUP.
Signed-off-by: Li Zefan <lizefan@xxxxxxxxxx>
---
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
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