Hi Jens, hi Damien, hi btrfs maintainers, (sorry for the third resend, I finally debugged why git-send-email dropped the Cc to the lists) this fixes a few issues found with zoned xfs testing that affect block layer interfaces used by file systems, and the btrfs code making use of them. Changes since v1: - don't apply the zone_write_boundary to reads - add another patch to fix write_zeroes
