--- zzzz-none-000/linux-3.10.107/fs/cifs/cifs_fs_sb.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/fs/cifs/cifs_fs_sb.h	2021-02-04 17:41:59.000000000 +0000
@@ -45,6 +45,7 @@
 #define CIFS_MOUNT_POSIXACL	0x100000 /* mirror of MS_POSIXACL in mnt_cifs_flags */
 #define CIFS_MOUNT_CIFS_BACKUPUID 0x200000 /* backup intent bit for a user */
 #define CIFS_MOUNT_CIFS_BACKUPGID 0x400000 /* backup intent bit for a group */
+#define CIFS_MOUNT_MAP_SFM_CHR	0x800000 /* SFM/MAC mapping for illegal chars */
 #define CIFS_MOUNT_USE_PREFIX_PATH 0x1000000 /* make subpath with unaccessible
 					      * root mountable
 					      */
@@ -68,6 +69,7 @@
 	char   *mountdata; /* options received at mount time or via DFS refs */
 	struct backing_dev_info bdi;
 	struct delayed_work prune_tlinks;
+	struct rcu_head rcu;
 	char *prepath;
 };
 #endif				/* _CIFS_FS_SB_H */