Merge tag 'upstream-4.10-rc1' of git://git.infradead.org/linux-ubifs

Pull ubifs updates from Richard Weinberger:

 - file encryption for UBIFS using the fscrypt framework

 - a fix to honor the dirty_writeback_interval sysctl

 - removal of dead code

* tag 'upstream-4.10-rc1' of git://git.infradead.org/linux-ubifs: (30 commits)
  ubifs: Initialize fstr_real_len
  ubifs: Use fscrypt ioctl() helpers
  ubifs: Use FS_CFLG_OWN_PAGES
  ubifs: Raise write version to 5
  ubifs: Implement UBIFS_FLG_ENCRYPTION
  ubifs: Implement UBIFS_FLG_DOUBLE_HASH
  ubifs: Use a random number for cookies
  ubifs: Add full hash lookup support
  ubifs: Rename tnc_read_node_nm
  ubifs: Add support for encrypted symlinks
  ubifs: Implement encrypted filenames
  ubifs: Make r5 hash binary string aware
  ubifs: Relax checks in ubifs_validate_entry()
  ubifs: Implement encrypt/decrypt for all IO
  ubifs: Constify struct inode pointer in ubifs_crypt_is_encrypted()
  ubifs: Introduce new data node field, compr_size
  ubifs: Enforce crypto policy in mmap
  ubifs: Massage assert in ubifs_xattr_set() wrt. fscrypto
  ubifs: Preload crypto context in ->lookup()
  ubifs: Enforce crypto policy in ->link and ->rename
  ...