On Fri, Sep 17, 2010 at 10:45:38AM +0800, Shaohua Li wrote: > Chris, > we are seeing kernel warning from time to time when doing btrfs test. > That issue is hard to trigger, but it sometimes pop up. we saw this in > both fio and ffsb test in several kernel version. Below is an example. > do you have idea about it? we are glad to test patches/do debug if you > can share some ideas. Interesting. We're backing up behind the ordered operations mutex, but I don't see the stack trace from the process currently holding it. Could you please do a sysrq-w and record the results? We need to see who we are stuck on. My guess is we're stuck waiting for IO, but the traces will say for sure. -chris -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
