Re: Is initramfs freed after kernel is booted?

[Jeff Garzik <jgarzik@pobox.com>]

Chris Friesen wrote:
> Andrey Borzenkov wrote:
> 
>> my example is after pivot_root. I still have two roots.
>>
>> To clarify. I want to replace initrd with initramfs. Given all
>> the stuff may be put in it can easily be expanded to a couple of MBs.
>> initrd frees this. I do not want to waste RAM to leave them in initramfs.
> 
> 
> Absolutely, the memory should be reclaimed.  I would have thought that 
> you could just unmount it--if the pivot_root is done properly there 
> shouldn't be any references left to the initramfs.
> 
> Jeff?


You can't unmount rootfs.  And I'm not sure pivot_root will work, though 
we're quickly reaching the end of my knowledge[1].  Certainly the 
equivalent of "rm -rf *" will work.

	Jeff



[1] without reviewing the code again :)