Messages in this thread | | | Date | Tue, 04 Mar 2003 13:36:41 +1300 | From | Nigel Cunningham <> | Subject | Re: [ACPI] Re: S4bios support for 2.5.63 |
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On Tue, 2003-03-04 at 12:39, Roger Luethi wrote: > On Tue, 04 Mar 2003 11:06:50 +1300, Nigel Cunningham wrote: > > You were hitting the BUG_ON before swsusp was even trying to write the > > image?!! That is interesting! Since count_and_copy is first called post > > driver suspend in the current version, perhaps they are somehow related. > > (This is before swsusp tries to write any of the image to disk). > > Huh? After a glance at the code I agree that drivers_suspend happens before > count_and_copy_data_pages, but that means hitting the BUG_ON in > idedisk_suspend before the panic in count_and_copy_data_pages is what I'd > expect. How is that remarkable? ... My current kernel has HIGHMEM enabled, > but previous ones that failed the same way didn't.
I was surprised because I thought you were getting the BUG_ON during writing the image. Now I see that it's well beforehand.
> Anyway, a few more tests showed that hdparm -u1 helps if I have lots of > memory used (say for fs caches). In two out of two tests, I saw Pavel's > request to send him 1 GB RAM via email.
On this topic, would you be willing to test a 2.4 version that supported highmem? I haven't written support yet, but hope to do it shortly. (I don't have that much ram myself so you can send me 1GB if you prefer :>).
> Suspending directly from a clean boot (after issuing the same hdparm -u1 > commands for both disks) I hit the BUG_ON in idedisk_suspend (two out of > two tests, too).
Hmmm.. strange.
Regards,
Nigel
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