Re: [PATCH][2.6] No swapping on memory backed swapfiles

[Zwane Mwaikambo]

On Mon, 13 Oct 2003, Andrew Morton wrote:

> Zwane Mwaikambo <zwane@xxxxxxxxxxxxxxxx> wrote:
> >
> > +	bdi = mapping->backing_dev_info;
> >  +	if (bdi->memory_backed)
> >  +		goto bad_swap;
> >  +
> 
> I guess that makes sense, although someone might want to swap onto a
> ramdisk-backed file just for some testing purpose.
> 
> Why not simply test for a null ->readpage()?

That was my initial intention, but then i wondered why someone would be 
swapping to a memory backed filesystem in the first place. Also things 
like ramfs have ->readpage().
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