badblock leaks system memory?

[Bizhan Gholikhamseh (bgholikh)]

Hi ALL,
After rebooting my system, the free command indicate plenty of memory on
my system:
 
:>free
              total         used         free       shared      buffers
  Mem:       516180       369948       146232            0       262256
 Swap:            0            0            0
Total:       516180       369948       146232

Then I ran badblock command:
:> badblock -sv /dev/hda
 
This time free command shows much much less memory, it seems "buffers"
have got all the memory, but how do I release it?
 :>free
              total         used         free       shared      buffers
  Mem:       516180       508844         7336            0       399440
 Swap:            0            0            0
Total:       516180       508844         7336

 
Thanks,
Biz