Re: RFC: i386: kill !4KSTACKS

[Kyle Moffett]

On Sep 5, 2005, at 18:32:32, Thorild Selen wrote:
> Adrian Bunk <bunk@xxxxxxxxx> writes:
> > Please name situations where 8K stacks may be preferred that do not
> > involve binary-only modules.
>
> How about NFS-exporting a filesystem on LVM atop md?  I believe it has
> been mentioned before in discussions that 8k stacks are strongly
> recommended in this case.  Are those issues solved?

I think the worst overflow case anyone found was  
nfs=>xfs=>lvm=>dm=>scsi, if
someone has such a configuration, please retest with current -mm or  
similar.
I think there are several patches in there to resolve the excessive  
stack
usage and a few to do some sort of bio chaining (Instead of recursive  
calls).
I don't remember what underlying hardware was behind the SCSI, but I  
suspect
something like iSCSI or USB would push some extra stack in there for  
stress
testing.

Cheers,
Kyle Moffett

--
I have yet to see any problem, however complicated, which, when you  
looked at
it in the right way, did not become still more complicated.
  -- Poul Anderson



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