epoll.c: note that close() never fails under Linux

ref: Linux kernel sources

1 files changed, 1 insertions, 1 deletions

diff --git a/ext/sleepy_penguin/epoll.c b/ext/sleepy_penguin/epoll.c
index f71b658..8b93817 100644
--- a/ext/sleepy_penguin/epoll.c
+++ b/ext/sleepy_penguin/epoll.c
@@ -65,7 +65,7 @@ static void gcfree(void *ptr)
                 st_delete(active, &key, NULL);
         }
         if (NIL_P(ep->io) && ep->fd >= 0) {
-                /* can't raise during GC */
+                /* can't raise during GC, and close() never fails in Linux */
                 (void)close(ep->fd);
                 errno = 0;
         }