Re: [PATCH] cryptoloop

From: Jari Ruusu (
Date: Thu Jul 03 2003 - 06:21:29 EST wrote:
> akpm:
> > You'll note that loop.c goes from (page/offset/len) to (addr/len),
> > and this transfer function then immediately goes from (addr,len)
> > to (page/offset/len). That's rather silly ..
> Changing that would kill all existing modules that use the loop device.
> Maybe nobody cares. Then we can do so in a subsequent patch.

I care. Please don't break the transfer function prototype.

I don't know if you guys have realized it or not, but cryptoloop+cryptoapi
is the slowest possible loop crypto implementation on the planet. Before you
guys sacrifice loop performance with cryptoloop only stuff, you may want to
do google search for "loop-AES" (twice as fast on most modern boxes) and
choose to preserve fast interfaces that other implementations depend on.

Jari Ruusu <>

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