Re: Suspend not working with SATA:

[Jeff Garzik]

Witold Krecicki wrote:
> Stopping tasks: 
> ==================================================================
>  stopping tasks failed (2 tasks remaining)
> Restarting tasks...<6> Strange, katad-1 not stopped
>  Strange, katad-2 not stopped
>  done


Both Pavel Machek and I posted test patches to address this... 
basically, because of the design of swsusp, you must copy-n-paste the 
following code into every single kernel thread:

                        if (current->flags & PF_FREEZE)
                                refrigerator(PF_IOTHREAD);

But I consider suspend untested at best... for reboot and suspend the 
driver should issue flush-cache and other things beyond simply freezing 
the kernel thread.  Further, suspending will suck if the kernel thread 
itself is the one doing I/O on behalf of the driver.  This occurs if the 
transfer mode is PIO rather than DMA.

	Jeff



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