blk-iocost: charge zone appends as writes

Zone append is a primary write operation for zoned devices; zoned xfs
and btrfs use it for data writes.  It is priced at zero, so the zone
append portion of zoned workloads runs outside the controller: a
1%-weight cgroup issued 16000 appends at zero cost on a zoned null_blk.

Treat REQ_OP_ZONE_APPEND the same as REQ_OP_WRITE so it goes through
the existing seq/rand classification and charging.

Fixes: 0512a75b98f8 ("block: Introduce REQ_OP_ZONE_APPEND")
Signed-off-by: Tao Cui <cuitao@kylinos.cn>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://patch.msgid.link/20260922043856.2020116-3-cui.tao@linux.dev
Signed-off-by: Jens Axboe <axboe@kernel.dk>

0 files changed, 0 insertions, 0 deletions