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Neil Brown wrote: > How likely it would be to get two requests with the same sector number > I don't know. I wouldn't expect it to ever happen - I have seen it > before, but it was due to a bug in ext3. Maybe XFS does it > intentionally some times? It certainly sounds like an odd thing to occur. Even stranger that it's easier to hit on a degraded array or an array being checked. I *am* using ext3 on this box (and all my boxes in fact) > You could test this theory by putting a > WARN_ON(cfqq->next_rq == NULL); > at the end of cfq_reposition_rq_rb, just after the cfq_add_rq_rb call. I've done that.. now to wait for it to hit again. Brad -- "Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so." -- Douglas Adams - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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