From owner-freebsd-hackers  Thu Jun  3 14:38:20 1999
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Date: Thu, 3 Jun 1999 14:35:24 -0700 (PDT)
From: Matthew Jacob <mjacob@feral.com>
Reply-To: mjacob@feral.com
To: Matthew Dillon <dillon@apollo.backplane.com>
Cc: Jos Backus <Jos.Backus@nl.origin-it.com>,
	Wilko Bulte <wilko@yedi.iaf.nl>, zzhang@cs.binghamton.edu,
	freebsd-hackers@FreeBSD.ORG
Subject: Re: The choice of MAXPHYS
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> 
>     MAXPHYS is ultimately a limitation on the size of the b_pages array in
>     the struct buf structure.  The default is 128 KBytes.  Device Drivers are 
>     supposed to break up I/O's into manageable sections themselves.
> 
>     Maybe when the buffer I/O / VFS subsystem is rewritten later this year
>     we can get rid of the artificial limitations.
> 

please.




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