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Re: [Fwd: Re: mysterious dbench results]

To: Andi Kleen <ak@xxxxxxx>
Subject: Re: [Fwd: Re: mysterious dbench results]
From: Jens Axboe <axboe@xxxxxxx>
Date: Wed, 21 Feb 2001 15:07:03 +0100
Cc: Chaitanya Tumuluri <chait@xxxxxxxxxxxxxxxxxxxx>, Thomas Graichen <graichen@xxxxxxxxxxxxx>, Rajagopal Ananthanarayanan <ananth@xxxxxxx>, linux-xfs@xxxxxxxxxxx
In-reply-to: <20010221104522.A10722@xxxxxxxxxxxxxxxxxxx>; from ak@xxxxxxx on Wed, Feb 21, 2001 at 10:45:22AM +0100
References: <20010221013939.G1447@xxxxxxx> <Pine.LNX.4.21.0102201646400.6815-100000@xxxxxxxxxxxxxxxxxxxx> <20010221022700.H1447@xxxxxxx> <20010221104522.A10722@xxxxxxxxxxxxxxxxxxx>
Sender: owner-linux-xfs@xxxxxxxxxxx
On Wed, Feb 21 2001, Andi Kleen wrote:
> > > Ooooh! kiobuf-sized buffer-head requests are now allowed? Cool! :^)
> > 
> > They can grow arbitrarily big, only limited by limitations of the
> > low level driver. But the reason max_segments is gone is because
> 
> Just there seem to be lots of drivers that cannot deal with big requests. 

This is only a problem for the kiobufs, the buffer_head requests can
be limited to whatever the driver wants.

-- 
Jens Axboe


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