From: Peter Staubach <staubach@redhat.com>
To: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Vince Busam <vbusam@google.com>, nfs@lists.sourceforge.net
Subject: Re: mtime not updated in client cache?
Date: Fri, 09 Dec 2005 09:06:04 -0500 [thread overview]
Message-ID: <43998F4C.6010902@redhat.com> (raw)
In-Reply-To: <1134013082.8002.8.camel@lade.trondhjem.org>
Trond Myklebust wrote:
><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.
>
Perhaps I am missing something, but fsync(2) should not cause the
mtime/ctime
to change. The write(2) call should. Sequences such as
stat(&a)/write()/stat(&b)
should result b.st_mtime != a.st_mtime.
Thanx...
ps
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next prev parent reply other threads:[~2005-12-09 14:22 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-29 0:09 mtime not updated in client cache? Vince Busam
2005-11-29 0:45 ` Trond Myklebust
2005-12-01 1:06 ` Vince Busam
2005-12-01 1:15 ` Trond Myklebust
2005-12-08 1:22 ` Vince Busam
2005-12-08 3:38 ` Trond Myklebust
2005-12-09 14:06 ` Peter Staubach [this message]
2005-12-09 14:16 ` Trond Myklebust
2005-12-09 14:24 ` Peter Staubach
2005-12-09 15:19 ` Trond Myklebust
2005-12-13 1:51 ` Vince Busam
-- strict thread matches above, loose matches on Subject: below --
2005-12-09 15:56 Lever, Charles
2005-12-09 16:10 ` Trond Myklebust
2005-12-09 16:40 ` Peter Staubach
2005-12-09 19:07 Lever, Charles
2005-12-09 19:20 ` Peter Staubach
2005-12-09 19:55 ` Roger Heflin
2005-12-09 21:05 ` Peter Staubach
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