Patch "ovl: disallow overlayfs as upperdir" has been added to the 4.4-stable tree

This is a note to let you know that I've just added the patch titled

ovl: disallow overlayfs as upperdir

to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
ovl-disallow-overlayfs-as-upperdir.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Miklos Szeredi <[email protected]>
Date: Fri, 29 Jul 2016 12:05:24 +0200
Subject: ovl: disallow overlayfs as upperdir

From: Miklos Szeredi <[email protected]>

commit 76bc8e2843b66f8205026365966b49ec6da39ae7 upstream.

This does not work and does not make sense. So instead of fixing it (probably not hard) just disallow.

---
 fs/overlayfs/super.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

@@ -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)

Patches currently in stable-queue which might be from [email protected] are

queue-4.4/ovl-disallow-overlayfs-as-upperdir.patch