Andrew Morton wrote:
> Manuel Lauss <[email protected]> wrote:
>> With the attached .config, the kernel reliably panics when someone
>> issues a 'sync' (or the kernel decides to write back its buffers):
>>
>> reiser4 panicked cowardly: reiser4[sync(8465)]: commit_current_atom (fs/reiser4/txnmgr.c:1062)[zam-597]:
>> Kernel panic - not syncing: reiser4[sync(8465)]: commit_current_atom (fs/reiser4/txnmgr.c:1062)[zam-597]:
>>
>> (this is all that is printed)
>>
>> This happens only with Reiser4 and libata ata_piix driver; it does not
>> happen with Reiser4 and 'old' IDE piix driver. Other fs are also not
>> affected. I have no idea how to track this, I hope someone else does :)
>>
>> Hardware is a pentium-m laptop with ICH4 pata.
>>
> My guess would be that there's a difference in the way in which the two
> drivers handle write barriers, and the new driver has confused the reiser4
> code.
>
> Are you able to identify any earlier -mm kernel which ran OK with reiser4
> and ata_piix?
-mm1 and -mm2 are good, mm3 and mm4 are broken.
--
Manuel Lauss
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