Re: 2.6.23 spinlock hang in kswapd under heavy disk write loads

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With DEBUG_SLAB on, I can run only a very short time under 2.6.23
before a kernel panic.

[  626.028180] eth0: too many iterations (6) in nv_nic_irq.
[  626.167583] eth0: too many iterations (6) in nv_nic_irq.
[  626.206729] eth0: too many iterations (6) in nv_nic_irq.
[  626.400171] eth0: too many iterations (6) in nv_nic_irq.
[  626.446374] eth0: too many iterations (6) in nv_nic_irq.

followed by the crash at
forcedeth:nv_nic_irq_optimized+0x89
handle_IRQ_event+0x25
handle_edge_IRQ+0xe3
do_IRQ

berkley

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