On Thu, 2008-04-24 at 05:52 -0400, Christoph Hellwig wrote:

quoted text
> > I wonder if the direct reclaim path should avoid direct reclaim if the stack has only X bytes left.
> > (where the value of X is... well we can figure that one out later)
> 
> Actually direct reclaim should be totally avoided for complex
> filesystems.  It's horrible for the stack and for the filesystem
> writeout policy and ondisk allocation strategies.

That's basically any reclaim, even kswapd will ruin policy and block
allocation smarts.

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