Hi!
> > > Throw out the pages we can evict
> >
> > ...DMA from disk may be still running here...
>
> Only if a request is still active and therfore the queue is not
> quiesced
>
How do I quiesce a queue? Is it ll_rw_blk stuff?
>
> > ...and at resume you find out that your memory is not consistent
> > because DMA was still running when you were doing copy.
>
> I can see how that can be a problem for some other things but not block
> devices.
You are probably right that for ide disk quiescing a queue is enough,
but nothing prevents block device to do some DMA just for fun. Also I
want to spindown on suspend (andre wanted that, to flush caches), so I
guess that the patch is quite good as-is....
Pavel
-- Casualities in World Trade Center: ~3k dead inside the building, cryptography in U.S.A. and free speech in Czech Republic. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Thu Nov 07 2002 - 22:00:30 EST