linux-kernel - Re: [sqlite] light weight write barriers

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Message-ID: <20121011174157.GA32038@infradead.org>
Date:	Thu, 11 Oct 2012 13:41:57 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	????????? Yang Su Li <suli@...wisc.edu>
Cc:	General Discussion of SQLite Database <sqlite-users@...ite.org>,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	drh@...ci.com
Subject: Re: [sqlite] light weight write barriers

On Thu, Oct 11, 2012 at 11:32:27AM -0500, ????????? Yang Su Li wrote:
> I am not quite whether I should ask this question here, but in terms
> of light weight barrier/fsync, could anyone tell me why the device
> driver / OS provide the barrier interface other than some other
> abstractions anyway? I am sorry if this sounds like a stupid questions
> or it has been discussed before....

It does not.  Except for the legacy mount option naming there is no such
thing as a barrier in Linux these days.

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