From owner-cvs-all  Wed Sep 22 13:35:21 1999
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Date: Wed, 22 Sep 1999 13:35:15 -0700 (PDT)
From: Matthew Jacob <mjacob@feral.com>
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To: Poul-Henning Kamp <phk@FreeBSD.org>
Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: Re: cvs commit: src/sys/kern kern_physio.c src/sys/miscfs/specfs  
       spec_vnops.c src/sys/sys conf.h
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> 
> > 
> >   Modified files:
> >     sys/kern             kern_physio.c 
> >     sys/miscfs/specfs    spec_vnops.c 
> >     sys/sys              conf.h 
> >   Log:
> >   Kill the cdevsw->d_maxio field.
> >   
> >   d_maxio is replaced by the dev->si_iosize_max field which the driver
> >   should be set in all calls to cdevsw->d_open if it has a better
> >   idea than the system wide default.
> >   
> >   The field is a generic dev_t field (ie: not disk specific) so that
> >   tapes and other devices can use physio as well.

Should si_iosize_max be cognizant of all limitations (e.g., HBA DMA
limitations)? Can si_iosize_max be a sized integer?








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