| From 76bc8e2843b66f8205026365966b49ec6da39ae7 Mon Sep 17 00:00:00 2001 |
| From: Miklos Szeredi <mszeredi@redhat.com> |
| Date: Fri, 29 Jul 2016 12:05:24 +0200 |
| Subject: ovl: disallow overlayfs as upperdir |
| |
| From: Miklos Szeredi <mszeredi@redhat.com> |
| |
| commit 76bc8e2843b66f8205026365966b49ec6da39ae7 upstream. |
| |
| This does not work and does not make sense. So instead of fixing it |
| (probably not hard) just disallow. |
| |
| Reported-by: Andrei Vagin <avagin@gmail.com> |
| Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| fs/overlayfs/super.c | 3 ++- |
| 1 file changed, 2 insertions(+), 1 deletion(-) |
| |
| --- a/fs/overlayfs/super.c |
| +++ b/fs/overlayfs/super.c |
| @@ -376,7 +376,8 @@ static struct ovl_entry *ovl_alloc_entry |
| static bool ovl_dentry_remote(struct dentry *dentry) |
| { |
| return dentry->d_flags & |
| - (DCACHE_OP_REVALIDATE | DCACHE_OP_WEAK_REVALIDATE); |
| + (DCACHE_OP_REVALIDATE | DCACHE_OP_WEAK_REVALIDATE | |
| + DCACHE_OP_REAL); |
| } |
| |
| static bool ovl_dentry_weird(struct dentry *dentry) |
