On Tue, Dec 22, 2020 at 01:59:22PM +0800, Qu Wenruo wrote:

This small patchset is btrfs_dec_test_*_ordered_extent() refactor during
subpage RW support development.

This is mostly to make btrfs_dev_test_* functions more human readable
and prepare it for calling btrfs_dec_test_first_ordered_extent() in
btrfs_writepage_endio_finish_ordered() where we can have one or more
ordered extents for one bvec.

The first patch is a very safe width reduction, where there is only one
assginment. Thus it should be very safe and won't be involved in other
call sites.

I've added a comment to the 'bytes' and reworded some comments in the
2nd patch, now added to misc-next, thanks.