9df76fb5442a ("btrfs: get fs_info from eb in lock_extent_buffer_for_io")
2e3c25136adf ("btrfs: extent_io: add proper error handling to lock_extent_buffer_for_io()")
f4340622e022 ("btrfs: extent_io: Move the BUG_ON() in flush_write_bio() one level up")
bb58eb9e167d ("btrfs: extent_io: Kill the forward declaration of flush_write_bio")