On Wed, May 07, 2014 at 09:35:06AM -0300, Kenny MacDermid wrote: > On Tue, May 6, 2014 at 11:22 PM, Liu Bo <bo.li....@oracle.com> wrote: > > > > What does sysrq+w say when the hang happens? > > The whole system isn't hung, I may have explained that wrong. The > system will hang if I try to shutdown, and the process will hang if I > try to kill -9 it. > > It looks like the browser is in this state currently so I did an 'echo > w >/proc/sysrq-trigger' and have attached the full dmesg with the > browser issues and the output.
Those stacks show the blocked tasks are waiting for a page's writeback, but they don't show what blocks the endio process of that page. I'd recommand you to try the lastest 3.15.0-rc4 or btrfs-next, as many fixes are merged during this period. thanks, -liubo -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
