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SubjectRe: [PATCH][2.6] No swapping on memory backed swapfiles
On Mon, 13 Oct 2003, Andrew Morton wrote:

> Zwane Mwaikambo <zwane@arm.linux.org.uk> 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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