diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index 1ae4542..90fbab6 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -823,7 +823,8 @@ static bool __ep_remove(struct eventpoll *ep, struct epitem *epi, bool force)
 	to_free = NULL;
 	head = file->f_ep;
 	if (head->first == &epi->fllink && !epi->fllink.next) {
-		file->f_ep = NULL;
+		/* See eventpoll_release() for details. */
+		WRITE_ONCE(file->f_ep, NULL);
 		if (!is_file_epoll(file)) {
 			struct epitems_head *v;
 			v = container_of(head, struct epitems_head, epitems);
@@ -1603,7 +1604,8 @@ static int attach_epitem(struct file *file, struct epitem *epi)
 			spin_unlock(&file->f_lock);
 			goto allocate;
 		}
-		file->f_ep = head;
+		/* See eventpoll_release() for details. */
+		WRITE_ONCE(file->f_ep, head);
 		to_free = NULL;
 	}
 	hlist_add_head_rcu(&epi->fllink, file->f_ep);