--- zzzz-none-000/linux-3.10.107/include/linux/mount.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/include/linux/mount.h	2021-02-04 17:41:59.000000000 +0000
@@ -45,9 +45,11 @@
 #define MNT_USER_SETTABLE_MASK  (MNT_NOSUID | MNT_NODEV | MNT_NOEXEC \
 				 | MNT_NOATIME | MNT_NODIRATIME | MNT_RELATIME \
 				 | MNT_READONLY)
-
 #define MNT_ATIME_MASK (MNT_NOATIME | MNT_NODIRATIME | MNT_RELATIME )
 
+#define MNT_INTERNAL_FLAGS (MNT_SHARED | MNT_WRITE_HOLD | MNT_INTERNAL | \
+			    MNT_DOOMED | MNT_SYNC_UMOUNT | MNT_MARKED)
+
 #define MNT_INTERNAL	0x4000
 
 #define MNT_LOCK_ATIME		0x040000
@@ -55,6 +57,11 @@
 #define MNT_LOCK_NOSUID		0x100000
 #define MNT_LOCK_NODEV		0x200000
 #define MNT_LOCK_READONLY	0x400000
+#define MNT_LOCKED		0x800000
+#define MNT_DOOMED		0x1000000
+#define MNT_SYNC_UMOUNT		0x2000000
+#define MNT_MARKED		0x4000000
+#define MNT_UMOUNT		0x8000000
 
 struct vfsmount {
 	struct dentry *mnt_root;	/* root of the mounted tree */
@@ -63,6 +70,7 @@
 };
 
 struct file; /* forward dec */
+struct path;
 
 extern int mnt_want_write(struct vfsmount *mnt);
 extern int mnt_want_write_file(struct file *file);
@@ -71,10 +79,12 @@
 extern void mnt_drop_write_file(struct file *file);
 extern void mntput(struct vfsmount *mnt);
 extern struct vfsmount *mntget(struct vfsmount *mnt);
-extern void mnt_pin(struct vfsmount *mnt);
-extern void mnt_unpin(struct vfsmount *mnt);
+extern struct vfsmount *mnt_clone_internal(struct path *path);
 extern int __mnt_is_readonly(struct vfsmount *mnt);
 
+struct path;
+extern struct vfsmount *clone_private_mount(struct path *path);
+
 struct file_system_type;
 extern struct vfsmount *vfs_kern_mount(struct file_system_type *type,
 				      int flags, const char *name,
@@ -83,6 +93,6 @@
 extern void mnt_set_expiry(struct vfsmount *mnt, struct list_head *expiry_list);
 extern void mark_mounts_for_expiry(struct list_head *mounts);
 
-extern dev_t name_to_dev_t(char *name);
+extern dev_t name_to_dev_t(const char *name);
 
 #endif /* _LINUX_MOUNT_H */