SUBSYSTEM!="block", GOTO="btrfs_end"
ACTION!="add|change", GOTO="btrfs_end"
ENV{ID_FS_TYPE}!="btrfs", GOTO="btrfs_end"

# Zoned btrfs needs an IO scheduler that supports zone write locking and
# currently mq-deadline is the only scheduler capable of this.
ATTR{queue/zoned}=="host-managed", ATTR{queue/scheduler}="mq-deadline"

LABEL="btrfs_end"