Comment 223 for bug 1470250

That is a good idea about testing a file system other than ext4.

There are two other ext4 commits in the bisect range we are testing. It would require 8321521 to be Good for it to be either of these:

265dabe ext4: fix wrong assert in ext4_mb_normalize_request()
d4d2e7e ext4: fix zeroing of page during writeback

I'll await your test results before building the next kernel. I'm going to look at my test script and see why it is taking so long for me to reproduce the bug. I did lower the number of io threads in tiotest because it was making the system almost unusable due to the io load, but maybe that is what's needed to reproduce the bug.

While your testing, I'll go ahead and setup some guests with a filesystem other than ext4 and test.