One experiment --- can you try this with the file system mounted with
data=writeback, and see if the problem reproduces in that journalling
mode?
I want to rule out (if possible) journal_submit_inode_data_buffers()
racing with mpage_da_submit_io(). I don't think that's the issue, but
I'd prefer to do the experiment to make sure. So if you can use a
kernel and system configuration which triggers the problem, and then
try changing the mount options to include data=writeback, and then
rerun the test, and let me know if the problem still reproduces, I'd
be really grateful.
Thanks,
- Ted
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