Re: XFS, 4K stacks, and Red Hat

[Christoph Hellwig <hch@xxxxxxxxxxxxx>]

On Wed, Jul 13, 2005 at 06:10:41AM +0200, Andi Kleen wrote:
> > In a previous life I actually had to resort to allocating a chunk of
> > memory, linking it into the stack, then carrying on down the call
> > chain (not on linux). The memory was freed on the way up the stack
> > again. I am not saying that would be a viable solution, but there needs
> > to be something done about stack overflow and nested subsystems, before
> > someone tries iscsi over IPV6 or something other bizzare combo.
> 
> ISCSI over something would be difficult again because that layering 
> is invisible to the block layer. Maybe the iscsi block driver would 
> need to declare how much stack it needs or do similar checks
> by itself.

That iscsi driver needs very little stack because it hands off all work
to a helper thread.