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rootfs and /dev/root on /?

Hello

Here's what "mount" says in a uClinux appliance:

Code:

rootfs on / type rootfs (rw)

/dev/root on / type yaffs (rw)

proc on /proc type proc (rw)

ramfs on /var/tmp type ramfs (rw)

sysfs on /sys type sysfs (rw)

devpts on /dev/pts type devpts (rw)

usbfs on /proc/bus/usb type usbfs (rw)

securityfs on /sys/kernel/security type securityfs (rw)

Does someone know why "/" is mounted twice?

And I'd like to double-check that the other entries, which don't contain a physical device as source are indeed just kernel data structures.

Thank you.

The others are just kernel (or RAM)- mounted filesystems.

I'd like to know the answer to your first question too.

Thanks for the tip. Are those RAM-based filesystems created when compiling the kernel, and are those keywords, ie. reserved names? It seems like we could also use "none":

http://www.acryan.com/forums/viewtop...=3138&start=20

Google reports / mounted twice occuring with embedded Linux. Maybe it's necessary when using flash memory instead of a hard-disk.