Swap_pager messages when no swap is in use

[bob prohaska]

On Sun, Oct 20, 2019 at 06:14:37PM -0600, Warner Losh wrote:
> On Sun, Oct 20, 2019, 6:04 PM bob prohaska <fbsd at www.zefox.net> wrote:
> 
> > While running svnlite to update sources on a Pi3 running -currrent
> > I was surprised to notice a flurry of
> > swap_pager: indefinite wait buffer: bufobj: 0, blkno: 133095, size: 4096
> > swap_pager: indefinite wait buffer: bufobj: 0, blkno: 136056, size: 4096
> > swap_pager: indefinite wait buffer: bufobj: 0, blkno: 140560, size: 4096
> > swap_pager: indefinite wait buffer: bufobj: 0, blkno: 134290, size: 8192
> > swap_pager: indefinite wait buffer: bufobj: 0, blkno: 124869, size: 16384
> > swap_pager: indefinite wait buffer: bufobj: 0, blkno: 125113, size: 4096
> > swap_pager: indefinite wait buffer: bufobj: 0, blkno: 142799, size: 4096
> > messages when no swap seemed to be in use. Gstat reported much congestion
> > of the microSD card, holding / and half the swap, but there was no obvious
> > activity reading or writing swap, just the root partition.
> >
> > Should this be considered normal? It strikes me as very odd.
> >
> 
> It took more than 30s for the IO to complete. Sadly, this is normal for
> cheap SD cards.
> 

Ok, but why is the swapping system complaining when there's no swapping going on?

Thanks for reading,

bob prohaska