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 -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html