Subject: Re: ext3_ordered_writepage() questions
From: "Stephen C. Tweedie" <sct@redhat.com>
To: Andreas Dilger <adilger@clusterfs.com>
Cc: Badari Pulavarty <pbadari@us.ibm.com>, Jan Kara <jack@suse.cz>,
       "Theodore Ts'o" <tytso@mit.edu>, Andrew Morton <akpm@osdl.org>,
       lkml <linux-kernel@vger.kernel.org>,
       linux-fsdevel <linux-fsdevel@vger.kernel.org>,
       Stephen Tweedie <sct@redhat.com>
In-Reply-To: <20060317005418.GY30801@schatzie.adilger.int>
References: <20060308124726.GC4128@lst.de> <4410551D.5000303@us.ibm.com>
	 <20060309153550.379516e1.akpm@osdl.org> <4410CA25.2090400@us.ibm.com>
	 <20060316180904.GA29275@thunk.org>
	 <1142533360.21442.153.camel@dyn9047017100.beaverton.ibm.com>
	 <20060316210424.GD29275@thunk.org>
	 <1142546275.21442.172.camel@dyn9047017100.beaverton.ibm.com>
	 <20060316220545.GB18753@atrey.karlin.mff.cuni.cz>
	 <1142552722.21442.180.camel@dyn9047017100.beaverton.ibm.com>
	 <20060317005418.GY30801@schatzie.adilger.int>
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Date: Fri, 17 Mar 2006 12:05:10 -0500
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Hi,

On Thu, 2006-03-16 at 17:54 -0700, Andreas Dilger wrote:

> That way the journal could tell the MD RAID layer what blocks might
> need resyncing instead of having to scan the whole block device for
> inconsistencies.

The current md layer supports write-intent bitmaps to deal with this.

--Stephen


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