Commit 07f2af7b authored Jun 29, 2015 by Konstantin Khlebnikov Committed by Miklos Szeredi Mar 21, 2016

ovl: honor flag MS_SILENT at mount

This patch hides error about missing lowerdir if MS_SILENT is set.

We use mount(NULL, "/", "overlay", MS_SILENT, NULL) for testing support of
overlayfs: syscall returns -ENODEV if it's not supported. Otherwise kernel
automatically loads module and returns -EINVAL because lowerdir is missing.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

parent 11f37104

fs/overlayfs/super.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -936,6 +936,7 @@ static int ovl_fill_super(struct super_block sb, void data, int silent)

		err = -EINVAL;
		if (!ufs->config.lowerdir) {
		if (!silent)
		pr_err("overlayfs: missing 'lowerdir'\n");
		goto out_free_config;
		}