From: Trond Myklebust <trond.myklebust@fys.uio.no>
Subject: Re: mtime not updated in client cache?
Date: Wed, 07 Dec 2005 22:38:02 -0500
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To: Vince Busam <vbusam@google.com>
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On Wed, 2005-12-07 at 17:22 -0800, Vince Busam wrote:

> I tried 2.6.15-rc5 (withoug NFS_ALL and CITI_ALL), and it exhibits the same issue as 
> demonstrated by the above referenced code.

<looks at code>

Yep. Your code contains a wrong assumption: fflush() is not guaranteed
to immediately update mtime/ctime since it does not sync data to disk.
The same is true of the posix "write()" function.

If you add the line fsync(fileno(fp)) after the call to fflush(), then
the mtime will be correctly updated.

Cheers,
 Trond



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