How to disable "Disk cache" on RAM

[Mohammad Halawah <mhalawah@gmail.com>]

Hello guys,


I have successfully installed software-suspend on my machine,
but it takes long time to do so (i.e. saves approx. 430MB ) each time.

While I am using only 200MB for my application and 230 for "disk cache".

So I am searching for a way to disable this feature "disk cache" on my 512MB 
RAM which I assume will fasten the hibernation process. 

Another reason for disabling the "disk cache", is to stop swaping on the HDD 
for the data saved in the "disk cache" part.

I have searched alot in the kernel forums but non found.

Any hint is appreciated.

Mohammad