Adding Al Viro into CC

On Thu, Jan 29, 2015 at 10:24:39AM +0800, Qu Wenruo wrote:

+struct vfsmount *get_vfsmount_sb(struct super_block *sb)
+{
+	struct vfsmount *ret_vfs = NULL;
+	struct mount *mnt;
+	int ret = 0;
+
+	lock_mount_hash();
+	if (list_empty(&sb->s_mounts))
+		goto out;
+	mnt = list_entry(sb->s_mounts.next, struct mount, mnt_instance);

from include/linux/fs.h:

struct super_block {
...
	struct list_head        s_mounts;       /* list of mounts; _not_ for fs use */
...
};

I hear a storm in the distance coming our direction ... so I'll
preemptively NAK this change.