Slava Pestov <sp <at> datera.io> writes: > There were two issues here: > > - writeback thread did not start until the device first became dirty > - writeback thread used uninterruptible sleep once running > > Without this patch I see kernel warnings printed and a load average of > 1.52 after booting my test VM. With this patch the warnings are gone and > the load average is near 0.00 as expected. Uninterruptible sleep is indeed fixed (as well as the annoying "blocked for more than 120 seconds" message), but with this patch, I have the following problem. If I run a bcache device with no cache attached, the kernel hangs when I try to reboot. It prints a long stack trace that takes all screen space and I can't see what is above it. If a cache is attached to the bcache device, rebooting works fine. Without the patch, rebooting works both with and without attached cache. -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
