int yaffs_unmount(const YCHAR *path) ;
int yaffs_unmount2(const YCHAR *path, int force);
int yaffs_remount(const YCHAR *path, int force, int read_only);
int yaffs_unmount(const YCHAR *path) ;
int yaffs_unmount2(const YCHAR *path, int force);
int yaffs_remount(const YCHAR *path, int force, int read_only);