Subject: Re: comparing raid-like filesystems
To: Martin J. Laubach <>
From: Jason R Thorpe <>
List: current-users
Date: 02/02/2003 09:06:10
On Sun, Feb 02, 2003 at 01:31:25PM +0000, Martin J. Laubach wrote:

 >   (b) no MAXPHYS at all and let the low level driver deal with
 >       segmenting large requests if necessary

This is clearly what we prefer.

 >   Remind me again why MAXPHYS is needed at all, is it just for histerical
 > reasons and no one ever bothered to remove that limitation?

Yes, but those reasons are now well-entrenched.  E.g. we still map pages
into KVA in order to do I/O, even if that is not actually necessary.

        -- Jason R. Thorpe <>