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Re: Simpler example of pathological behavior of directory caching

From: Kyle Rose
Subject: Re: Simpler example of pathological behavior of directory caching
Date: Thu, 6 Oct 2016 13:51:02 -0700

On Thu, Oct 6, 2016 at 12:03 PM, Eli Zaretskii <address@hidden> wrote:
It works as you'd expect for me even on MS-Windows, as it did for Paul
on GNU/Linux, so I'm curious what kind of filesystem do you have
there.  (I think this issue has much more to do with the type of
filesystem than with the OS.)

The code paths are entirely different on Linux and Windows, and so I'd expect a behavior difference there. Red herring. As far as the difference between two very similar Linux configurations (see my most recent response to Paul), I can't yet explain that: both Linux, both glibc-2.23, and both ext4.
> In any event, the existing behavior is a flat-out defect and should be corrected.

Can you step through the code and explain why it happens, though?  A
problem cannot be fixed if it is not understood well enough.

That will be my next step: having an ltrace from Paul's setup would reduce the search space by helping me pinpoint where the behavior diverges.


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