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SubjectRe: Idea about a disc backed ram filesystem
Matheus Izvekov <> 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
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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