RE: [PATCH] scsi: ufs: make sure scan sequence for multiple hosts

From: Avri Altman
Date: Thu Oct 22 2020 - 02:52:12 EST


>
> > > Did you mean /dev/disk/by-[part]label/ symlink? It's quite reasonable to
> > > use them by udev in userspace such as initramfs but some cases does not
> > use
> > > initramfs or initrd. In that case, we need to load the root
> > > device(/dev/sda[N]) directly from kernel.
> >
> > Please use udev or systemd instead of adding code in the UFS driver that
> > is
> > not necessary when udev or systemd is used.
> >
>
> What I mentioned was how it can be handled when we mount rootfs directly
> from kernel.
>
> 1) kernel -> initramfs (mount root) -> systemd
> 2) kernel (mount root) -> systemd
> -> In this case, we normally use root=/dev/sda1 from kernel commandline to
> mount the rootfs.
>
> Like fstab can support legacy node mount, ufs driver also needs to provide an
> option for using the permanent legacy node. If you're really worry about adding
> a new codes for all UFS driver, we can put this as controller specific or optional
> feature.
In case you'll convince Bart that this code is needed, maybe use a IDA handle for that?

Thanks,
Avri