Merge pull request #11653 from omacom/io-scheduler-kyber

Use the kyber I/O scheduler on real disks

etc/udev/rules.d/60-omarchy-io-scheduler.rules

@@ -0,0 +1,8 @@
+# Kyber keeps reads in their own queue and throttles the depth it submits to
+# hold a 2ms read latency target, so interactive reads keep flowing while a
+# large build, copy, or package upgrade floods the disk with writes. The
+# kernel's own pick (none or mq-deadline, depending on the device) does not
+# regulate latency once the queue fills. Whole disks only: partitions have no
+# scheduler of their own, and zram is memory with nothing to schedule. Zoned
+# btrfs disks are moved back to mq-deadline by 64-btrfs-zoned.rules.
+ACTION=="add|change", SUBSYSTEM=="block", ENV{DEVTYPE}=="disk", KERNEL=="nvme*|sd*|mmcblk*|vd*", ATTR{queue/scheduler}="kyber"