Re: [PATCH] mm: tracking shared dirty pages -v10

[Christoph Hellwig]

On Fri, Jun 23, 2006 at 10:56:44AM -0700, Linus Torvalds wrote:
> 
> 
> On Fri, 23 Jun 2006, Peter Zijlstra wrote:
> > 
> > I intent to make swap over NFS work next.
> 
> Doesn't it work already? Is there some throttling that doesn't work?

With the current code it definitly doesn't.  The swap code calls ->bmap
to do block mappings at swapon time and then uses bios directly. This
obviously can't work on anything but blockdevice-based filesystems.
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