Merge tag 'fixes_for_v4.20-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

Pull ext2 and udf fixes from Jan Kara:
 "Three small ext2 and udf fixes"

* tag 'fixes_for_v4.20-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  ext2: fix potential use after free
  ext2: initialize opts.s_mount_opt as zero before using it
  udf: Allow mounting volumes with incorrect identification strings