Messages in this thread Patch in this message | | | Subject | [PATCH 1/4] ovl: honor flag MS_SILENT at mount | From | Konstantin Khlebnikov <> | Date | Mon, 29 Jun 2015 20:18:56 +0300 |
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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> --- fs/overlayfs/super.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index bf8537c7f455..00e1d0b3abdd 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -840,7 +840,8 @@ 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; }
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