A file of 5 MB on tmpfs file system uses 5 MB of RAM or more?

[Scott Wood]

On Fri, Jan 18, 2008 at 02:15:02PM +0100, DI BACCO ANTONIO - technolabs wrote:
> I have a linux-2.6.19.2 board with an MPC880 with 16MB ram and 16 MB
> flash. 
> Normally I have 9-10 MB of free RAM.
>  
> If I allocate 5 MB of ram memory, the system continues to work normally,

Are you sure the RAM was actually allocated (i.e. did you write to all of
the pages)?

-Scott