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authorKonstantin Khlebnikov <khlebnikov@yandex-team.ru>2015-06-29 20:18:56 +0300
committerMiklos Szeredi <miklos@szeredi.hu>2016-03-21 19:31:45 +0300
commit07f2af7bfd247857b1bf16ae7f479b5b6f4ef305 (patch)
treeae5fa02390d6da56108791ea3d210ab7695aa7c3 /fs/overlayfs
parent11f3710417d026ea2f4fcf362d866342c5274185 (diff)
downloadlinux-07f2af7bfd247857b1bf16ae7f479b5b6f4ef305.tar.xz
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>
Diffstat (limited to 'fs/overlayfs')
-rw-r--r--fs/overlayfs/super.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
index 619ad4b016d2..6b0111ae2ceb 100644
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -936,7 +936,8 @@ static int ovl_fill_super(struct super_block *sb, void *data, int silent)
err = -EINVAL;
if (!ufs->config.lowerdir) {
- pr_err("overlayfs: missing 'lowerdir'\n");
+ if (!silent)
+ pr_err("overlayfs: missing 'lowerdir'\n");
goto out_free_config;
}