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From: Douglas McNaught <doug@mcnaught.org>
To: "Xin Zhao" <uszhaoxin@gmail.com>
Cc: linux-kernel <linux-kernel@vger.kernel.org>,
	linux-fsdevel@vger.kernel.org
Subject: Re: How to know when file data has been flushed into disk?
Date: Fri, 07 Apr 2006 11:53:29 -0400	[thread overview]
Message-ID: <87slop1ix2.fsf@suzuka.mcnaught.org> (raw)
In-Reply-To: <4ae3c140604070842x537353c4s9a60706c2a2d25d9@mail.gmail.com> (Xin Zhao's message of "Fri, 7 Apr 2006 11:42:09 -0400")

"Xin Zhao" <uszhaoxin@gmail.com> writes:

> 3. Does sys_close() have to  be blocked until all data and metadata
> are committed? If not, sys_close() may give application an illusion
> that the file is successfully written, which can cause the application
> to take subsequent operation. However, data flush could be failed. In
> this case, file system seems to mislead the application. Is this true?
> If so, any solutions?

The fsync() call is the way to make sure written data has hit the
disk.  close() doesn't guarantee that.

-Doug

  reply	other threads:[~2006-04-07 15:53 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-04-07 15:42 How to know when file data has been flushed into disk? Xin Zhao
2006-04-07 15:53 ` Douglas McNaught [this message]
2006-04-07 16:04   ` Xin Zhao
2006-04-07 16:55     ` linux-os (Dick Johnson)
2006-04-07 17:19       ` Xin Zhao
2006-04-07 23:54   ` Ric Wheeler
2006-04-07 17:54 ` Zach Brown
2006-04-08  1:39   ` Xin Zhao
2006-04-07 21:07 Michael Guo

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