Does feat/xfs_fdp_v4 support FDP ext4/f2fs/xfs which the NVMe driver maps write-hint values to the FDP placement identifiers?

[elisa523]

hi @joshkan ,
could you please help to resolve how to make the NVMe driver maps write-hint values to the FDP placement identifiers?
I used ubuntu26.04.1 and linux os 7.0.0-30-generic to run below fio cmds on SSD device that support FDP, but FDP write hint doesn't work. Does 7.0 linux kernel don't support which
the NVMe driver maps write-hint values to the FDP placement identifiers? Is there has a good idea to achieve it? thanks a lot.

mkfs.xfs /dev/nvme0n1
mount /dev/nvme0n1 /mnt
fio --filename=/mnt/f1 --bs=4k --ioengine=io_uring --group_reporting=1 --unlink=0 --size=1M
--direct=1 --name=f1 --rw=randwrite --write_hint=extreme

And, does your branch has supported FDP ext4/f2fs/xfs which the NVMe driver maps write-hint values to the FDP placement identifiers?
is this enables an application to leverage FDP using the write-hint interface? if yes, how i can to setup and use it? thanks a lot.