Subject: Re: [EXT3/JBD] Periodic journal flush not enough?
From: "Stephen C. Tweedie" <sct@redhat.com>
To: Andreas Dilger <adilger@clusterfs.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>, Andrew Morton <akpm@osdl.org>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       Stephen Tweedie <sct@redhat.com>
In-Reply-To: <20040326235511.GW1177@schnapps.adilger.int>
References: <20040326231958.GA484@gondor.apana.org.au>
	 <20040326235511.GW1177@schnapps.adilger.int>
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Message-Id: <1080590630.2285.110.camel@sisko.scot.redhat.com>
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Date: 29 Mar 2004 21:03:51 +0100
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Hi,

On Fri, 2004-03-26 at 23:55, Andreas Dilger wrote:

> I had created a patch a while ago, but never really got any testing on it.
> It would be great to get this problem fixed.

We don't really want to turn ENOSPC into an operation which always
requires synchronous IO, though, which your patch would do.  We can
probably detect the case where we've failed the allocate due to a
b_committed_data collision, though, and perform the retry only in that
case.

Cheers,
 Stephen


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