Re: Idea about a disc backed ram filesystem

[Horst von Brand]

Matheus Izvekov <mizvekov@xxxxxxxxx> wrote:

[...]

> I had a somewhat similar idea, once i have time to implement it ill
> submit a patch.
> My idea consisted of adding the capability to specify a device for
> tmpfs mounting. if you dont specify any device, tmpfs continues to
> behave the way it currently is. But if you do, once data doesnt fit on
> ram (or some other limit) anymore, it will flush things to this
> device. my intention was to reuse swap code for this, so you mount a
> tmpfs passing the dev node of some unused swap device, and it works
> just like tmpfs with a dedicated swap partition.

tmpfs does use swap currently. Giving tmpfs a dedicated swap space is dumb,
as it takes away the possibility of using that space for swapping when not
in use by tmpfs (and viceversa).
-- 
Dr. Horst H. von Brand                   User #22616 counter.li.org
Departamento de Informatica                     Fono: +56 32 654431
Universidad Tecnica Federico Santa Maria              +56 32 654239
Casilla 110-V, Valparaiso, Chile                Fax:  +56 32 797513
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