Re: [2.6 patch] i386: always use 4k stacks

[Mike Christie]

Mike Christie wrote:
> Olivier Galibert wrote:
>
> > On Mon, Nov 14, 2005 at 12:53:31PM +0100, Arjan van de Ven wrote:
> >
> > > The experience with Fedora so far is exceptionally good; in early 2.6
> > > there were some reports with XFS stacked on top of DM, but since then
> > > XFS has gone on a stack diet... also the -mm patches to do non-recursive
> > > IO submission will bury this (mostly theoretical) monster for good.
> >
> >
> >
> > Not theorical for iscsi though.  I guess net+block is a little too
> > much.
>
> If you have stack problem with iscsi then you should post it to those 
> lists or send me a pointer offlist. There were problems with iscsi and 
> XFS but they should be fixed in mainline. The XFS + iscsi problems that 
> have been reported have not been stack usage problems though.

I think to hit a iscsi stack problem you will have to have the scsi 
request_fn get called from __make_request (or one of the functions it 
calls like __elv_add_request which looks like it could call 
__generic_unplug_device). And then the iscsi queuecomamnd would have to 
hit the path that calls iscsi_data_xmit. Have you hit this?
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