"rootfstype=squashfs,jffs2" ??

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  playing with openwrt on a linksys wrt54gl router, and i noticed in
the middle of /proc/cmdline the boot-time option:

  rootfstype=squashfs,jffs2

what does that option mean?  what's happening here is that the root
filesystem is R/O squashfs, with changes being handled via mini_fo and
being placed in a jffs2 filesystem.  but how does that require that
option to be passed to the kernel at boot time?  and why would the
kernel need to be told both of those values?  thanks.

rday

========================================================================
Robert P. J. Day
Linux Consulting, Training and Annoying Kernel Pedantry
Waterloo, Ontario, CANADA

http://crashcourse.ca
========================================================================

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