Linux hibernation

[Jacky Lam]

Hi all,

     I am looking at the source code 2.6.29 and find that Linux will 
make a copy of used memory pages when doing hibernation. I am curious, 
in this case, what Linux do if I have used over 50% of memory? Will 
hibernation just fail? I think it is not possible, but I can't 
understand from the code.

     Could any explain a little bit for me? Thanks.

Jacky