linux-kernel - [PATCH] ovl: copy MS_POSIXACL flag from upper layer

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Date:	Sun, 31 Jan 2016 16:22:01 +0300
From:	Konstantin Khlebnikov <koct9i@...il.com>
To:	linux-fsdevel@...r.kernel.org, linux-unionfs@...r.kernel.org,
	Miklos Szeredi <miklos@...redi.hu>
Cc:	linux-kernel@...r.kernel.org,
	Alexander Viro <viro@...iv.linux.org.uk>
Subject: [PATCH] ovl: copy MS_POSIXACL flag from upper layer

Catched by xfstests generic/319

Signed-off-by: Konstantin Khlebnikov <koct9i@...il.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);