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Date: Wed, 13 Mar 2013 15:02:28 +0400
From: Lev Serebryakov <lev@FreeBSD.org>
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To: Konstantin Belousov <kostikbel@gmail.com>
Subject: Re: Unmapped buffers: to be merged in several days
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Hello, Konstantin.
You wrote 12 =CD=C1=D2=D4=C1 2013 =C7., 1:11:58:

>>  Will GEOM class, which needs to touch data (like raid3 or my off-tree
>> raid5), benefit from conversion, compare to generic mechanism,
>> provided for not-converted by your patch?
KB> First, what do you mean by 'benefit'. Answer would obviously depend
KB> on the criteria.
 One more thought: it seems, that raid3/raid5 software implementations
could benefit on reading when strict checks are disabled. Is it
possible to map downstream BIOs, but use upstream ones unmapped?

--=20
// Black Lion AKA Lev Serebryakov <lev@FreeBSD.org>