[Bug 42763] directory access hangs without error

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https://bugzilla.kernel.org/show_bug.cgi?id=42763





--- Comment #7 from Eric Buddington <ebuddington@xxxxxxxxxxxx>  2012-02-13 20:29:13 ---
If I run the multi-threaded 'du' *without* flushing caches between, I don't
seem to trigger the problem (after ~250 iterations, whereas ~20 trigger it
otherwise)

The command I use that triggers the bug (/packages is about 17G of ordinary
software installs):

n=1; while [ $n -lt 128 ]; do sync; echo 3 > /proc/sys/vm/drop_caches; ./edu
/packages $n; n=$[$n+1]; done

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