[PATCH] ovl: copy MS_POSIXACL flag from upper layer

[Konstantin Khlebnikov]

Catched by xfstests generic/319

Signed-off-by: Konstantin Khlebnikov <koc...@gmail.com>
---
 fs/overlayfs/super.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
index ba28b007005e..e6ae59c7119c 100644
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -972,6 +972,10 @@ static int ovl_fill_super(struct super_block *sb, void 
*data, int silent)
                        goto out_put_workpath;
                }
                sb->s_stack_depth = upperpath.mnt->mnt_sb->s_stack_depth;
+
+               /* Copy MS_POSIXACL flag from upper layer */
+               sb->s_flags &= ~MS_POSIXACL;
+               sb->s_flags |= upperpath.mnt->mnt_sb->s_flags & MS_POSIXACL;
        }
        err = -ENOMEM;
        lowertmp = kstrdup(ufs->config.lowerdir, GFP_KERNEL);