bdc2491708c4 ("blkcg: associate writeback bios with a blkg")
4e49ea4a3d27 ("block/fs/drivers: remove rw argument from submit_bio")
0b9210c9c86e ("Merge tag 'xfs-for-linus-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs")