On Tue, Feb 02, 2021 at 08:47:47AM -0800, Darrick J. Wong wrote: > Note that Naohiro Aota's btrfs patchset to add zoned block support will > perform some slight refactoring of fs/iomap/directio.c to add support > for REQ_OP_ZONE_APPEND. I don't know if they're planning to push that > for 5.12, but AFAICT it should have minimal impact to everyone else. Current plan is to push that patch to 5.12 among the other zoned updates in btrfs pull request.