Regarding stock 2.2.10: it behaves like the pre4 w.r.t. the
three tests:
ac11: infinite negative dentries provided the stat() is
repeated within every second. This is the case even
when the parent dir mtime is < 15 minutes old. Once
the stat() calls stop, there remains a >1 second
live time for negative dentries. pre4/stock seems ok.
ac11/pre4/stock negative dentries for about 30 seconds provided the
mtime of the parent dir is >15minutes old. No repeated
stat() in this case.
ac11/pre4/stock negative dentries for about 1 second otherwise.
A parameter which can also have effect is whether or not
the test is done in the mount point. I avoided the mount point
in all tests. I hope this clarifies a bit.
Regards,
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