Subject: Re: True  fsync() in Linux (on IDE)
From: Chris Mason <mason@suse.com>
To: Jens Axboe <axboe@suse.de>
Cc: Peter Zaitsev <peter@mysql.com>,
       Linux Kernel <linux-kernel@vger.kernel.org>
In-Reply-To: <20040318194745.GA2314@suse.de>
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	 <20040318064757.GA1072@suse.de> <1079639060.3102.282.camel@abyss.local>
	 <20040318194745.GA2314@suse.de>
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Date: Thu, 18 Mar 2004 15:11:40 -0500
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On Thu, 2004-03-18 at 14:47, Jens Axboe wrote:

> > With 2.6.3 I have  both existing file and new file to complete in less
> > than 1 second. 
> 
> I believe some missed set_page_writeback() calls caused fsync() to never
> really wait on anything, pretty broken... IIRC, it's fixed in latest
> -mm, or maybe it's just pending for next release.

This should have only been broken in -mm.  Which kernels exactly are you
comparing?  Maybe the 3ware array defaults to different writecache
settings under 2.6?

-chris


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