CVS commit: src

[Jason R Thorpe <thorpej%netbsd.org@localhost>]

Module Name:    src
Committed By:   thorpej
Date:           Sat Aug 15 01:10:54 UTC 1998

Modified Files:
        src/sys/dev/scsipi: sd.c sd_scsi.c sdvar.h
Log Message:
Keep track if the disk has had done i/o, making it dirty.  On last close,
or at shutdown, flush the cache if the disk is still dirty and it support
cache flushing.  Fixes PRs #5588 (Jim Bernard) and #5589 (Justin Gibbs).