From mboxrd@z Thu Jan  1 00:00:00 1970
From: Neil Brown <neilb@suse.de>
Subject: Re: Proposal: make RAID6 code optional
Date: Sun, 19 Apr 2009 16:28:11 +1000
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To: "H. Peter Anvin" <hpa@zytor.com>, Matti Aarnio <matti.aarnio@zmailer.org>, Jesper Juhl <jj@chaosbits.net>, Prakash Punnoor <prakash@punnoor.de>, Michael Tokarev <mjt@tls.msk.>
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On Sunday April 19, neilb@suse.de wrote:
> 
> In 2.6.30, the Q syndrome code has been moved into a separate module,
> so raid456.ko should be quite a bit smaller.

Of course that doesn't really help as there will be a dependency
between raid456.ko and pq.ko so you cannot avoid having pq.ko loaded
while using raid5.

It might make sense to create a raid6 module that just contains 
The call to register_md_personality(raid6_personality) and some
linkage so that the code in raid456.ko can get to the code in pq.ko.

This is probably worth trying one the raid6 async offload stuff
stabilises.

NeilBrown