> Hrm. I guess I'm in over my head here. Apologoies if I'm just asking > silly bumbling questions. You can start ignoring me at any time. :) I stared at the code for a while and more and now see why what I outlined is not possible. Thanks for helping to clarify! I decided to pull your git repo and compile with HEAD at 87ed50036b866db2ec2ba16b2a7aec4a2b0b7c39 (linux-next as of this morning). Using this kernel, I can no longer induce any hangs. Interestingly, I tried recompiling the CentOS 6.3 kernel with both the original patch (v4) and the last patch you sent about fixing priority queues. With both of those in place, I still run into a problem. echo 0 > /proc/sys/sunrpc/rpc_debug after the hang shows (I left in the previous additional prints and added printing of the tasks pointer itself): <6>client: ffff88082896c200, xprt: ffff880829011000, snd_task: ffff880829a1aac0 <6>client: ffff8808282b5600, xprt: ffff880829011000, snd_task: ffff880829a1aac0 <6>--task-- -pid- flgs status -client- --rqstp- -timeout ---ops-- <6>ffff88082a463180 22007 0080 -11 ffff8808282b5600 (null) 0 ffffffffa027b7a0 nfsv3 ACCESS a:call_reserveresult q:xprt_sending <6>client: ffff88082838cc00, xprt: ffff88082b7c5800, snd_task: (null) <6>client: ffff8808283db400, xprt: ffff88082b7c5800, snd_task: (null) <6>client: ffff8808283db200, xprt: ffff880829011000, snd_task: ffff880829a1aac0 Any thoughts about other patches that might affect this? -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
