Arnd Bergmann wrote:
> On Saturday 13 June 2009, Marco wrote:
>> void __init mount_root(void)
>> {
>> +#ifdef CONFIG_ROOT_PRAMFS
>> + if (MAJOR(ROOT_DEV) == MEM_MAJOR) {
>> + if (mount_pramfs_root())
>> + return;
>> +
>> + printk(KERN_ERR "VFS: Unable to mount root fs via PRAMFS,
>> trying floppy.\n");
>> + ROOT_DEV = Root_FD0;
>> + }
>> +#endif
>
> AFAICT, this will prevent booting from /dev/ram0 with a regular file system,
> because that also uses MAJOR(ROOT_DEV) == 1.
>
> Arnd <><
>
Mmm...MEM_MAJOR and RAMDISK_MAJOR have the same value and pramfs works
in memory. We could simply use /dev/null (there was an error in the
submitted kconfig description, my intention was to use /dev/mem). In
that case I can use UNNAMED_MAJOR. PRAMFS root option is not enabled if
it's already enabled the NFS one. What do you think?
Marco
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