K 10
svn:author
V 3
phk
K 8
svn:date
V 27
1999-10-09T19:44:32.000000Z
K 7
svn:log
V 526
Give physio a makeover.

- Let physio take read/write compatible args and have it use uio->uio_rw
  to determine the direction.

- physread/physwrite are now #defines for physio

- Remove the inversly named minphys(), dev->si_iosize_max takes over.

- Physio() always uses pbufs.

- Fix the check for non page-aligned transfers, now only unaligned
  transfers larger than (MAXPHYS - PAGE_SIZE) get fragmented (only
  interesting for tapes using max blocksize).

- General wash-and-clean of code.

Constructive input from: bde

END