[dm-devel] [PATCH] udev-md-raid-assembly.rules: skip if DM_UDEV_DISABLE_OTHER_RULES_FLAG

[NeilBrown]

> The flags that DM use for udev were introduced before systemd project
> even existed. We needed to introduce the DM_UDEV_DISABLE_OTHER_RULES_FLAG
> to have a possibility for all the "other" (non-dm) udev rules to check
> for if there's another subsystem stacking its own devices on top of DM
> ones.

If this is an established API that DM uses, then presumably it is
documented somewhere.  If a link to that documentation were provided, it
would look a a whole lot less like a hack.

Thanks,
NeilBrown