ep_create_wakeup_source(): dentry name can change under you... (3701cb59) · Commits · 戴 / test

fs/eventpoll.c

+4 −3

Original line number	Diff line number	Diff line
		@@ -1448,7 +1448,7 @@ static int reverse_path_check(void)

		static int ep_create_wakeup_source(struct epitem *epi)
		{
		const char *name;
		struct name_snapshot n;
		struct wakeup_source *ws;

		if (!epi->ep->ws) {
		@@ -1457,8 +1457,9 @@ static int ep_create_wakeup_source(struct epitem *epi)
		return -ENOMEM;
		}

		name = epi->ffd.file->f_path.dentry->d_name.name;
		ws = wakeup_source_register(NULL, name);
		take_dentry_name_snapshot(&n, epi->ffd.file->f_path.dentry);
		ws = wakeup_source_register(NULL, n.name.name);
		release_dentry_name_snapshot(&n);

		if (!ws)
		return -ENOMEM;