os0file.c	Always do fsync after a file write to reduce possibility of a partially written page in an OS crash
buf0rea.c	Fixed a recovery hang associated with ibuf bitmap pages


innobase/buf/buf0rea.c:
  Fixed a recovery hang associated with ibuf bitmap pages
innobase/os/os0file.c:
  Always do fsync after a file write to reduce possibility of a partially written page in an OS crash