Merge tag 'writeback-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg...

Pull writeback fix from Wu Fengguang:
 "A trivial writeback fix"

* tag 'writeback-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux:
  writeback: Do not sort b_io list only because of block device inode

diff --cc fs/block_dev.c
Simple merge

diff --cc fs/fs-writeback.c
Simple merge

diff --cc include/linux/fs.h
Simple merge