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")
cc5e31a4775d ("btrfs: switch types to int when counting eb pages")
65ad010488a5 ("btrfs: pass only eb to num_extent_pages")
0c8508a6e741 ("btrfs: cleanup merging conditions in submit_extent_page")
5c2b1fd7531d ("btrfs: assume that bio_ret is always valid in submit_extent_page")
31466f3ed710 ("Merge tag 'for-4.16-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux")