[linux-mm-cc] Update compcache structure

[Anderson Briglia]

Hi Nitin and others,

I'm back to old Compressed Cache working (now it's ramzswap). Well,
I'd like to know if that chunks approach is still being used. I
noticed that a new allocator was specially implemented for ramzswap
but is it using chunks approach for compressed pages storage?

I intend to begin the tests for ARM architecture using swapless devices.

Thanks for the help.

Anderson Briglia