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Date: Tue, 31 Mar 2009 23:35:17 -0700
From: Jeremy Fitzhardinge <jeremy@goop.org>
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To: Bojan Smojver <bojan@rexursive.com>
CC: linux-kernel@vger.kernel.org
Subject: Re: Linux 2.6.29
References: <alpine.LFD.2.00.0903251622420.3032@localhost.localdomain>	 <20090326171148.9bf8f1ec.akpm@linux-foundation.org>	 <alpine.LFD.2.00.0903261723250.3994@localhost.localdomain>	 <20090326174704.cd36bf7b.akpm@linux-foundation.org>	 <alpine.LFD.2.00.0903261752110.3994@localhost.localdomain>	 <20090327032301.GN6239@mit.edu> <20090327034705.GA16888@srcf.ucam.org>	 <20090327051338.GP6239@mit.edu> <20090327055750.GA18065@srcf.ucam.org>	 <20090327062114.GA18290@srcf.ucam.org> <20090327112438.GQ6239@mit.edu>	 <49CD4109.2070505@goop.org> <loom.20090328T073850-695@post.gmane.org>	 <loom.20090328T084304-506@post.gmane.org>	 <loom.20090328T214417-565@post.gmane.org>  <49D29077.80502@goop.org>	 <1238538636.26693.11.camel@shrek.rexursive.com> <1238563578.26693.19.camel@shrek.rexursive.com>
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Bojan Smojver wrote:
> On Wed, 2009-04-01 at 09:30 +1100, Bojan Smojver wrote:
>   
>> I have no idea why we don't have that either. FreeBSD code seems
>> really straightforward.
>>     
>
> I just tried using dd with conv=fsync option and that kinda does what
> you mentioned. I see this at the end of strace:
> ---------------------------------
> write(1, "<some data...>"..., 512) = 512
> read(0, ""..., 512)                = 0
> fsync(1)                           = 0
> close(0)                           = 0
> close(1)                           = 0
> ---------------------------------
>
> So, maybe GNU folks just don't want to have yet another tool for this.
>   

Huh, didn't know dd had grown that.  Confusingly similar to the 
completely different conv=sync, so its a perfect dd addition.  Ooh, 
fdatasync too.

    J
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