CVS commit: src/sys

["David A. Holland" <dholland%netbsd.org@localhost>]

Module Name:    src
Committed By:   dholland
Date:           Fri Jul 25 07:56:14 UTC 2014

Modified Files:
        src/sys/kern: subr_devsw.c
        src/sys/sys: conf.h

Log Message:
Add d_discard to struct bdevsw/cdevsw, and the plumbing to access it.

Unfortunately we need d_discard in both since we need to be able to
discard from both the block and character forms of disks. I'm
increasingly thinking it would be better to restructure the ops
dispatching so each type of device (ttys, disks, tapes, etc.) has its
own function table. Then we wouldn't need to change every tty driver
to add a disk op.


To generate a diff of this commit:
cvs rdiff -u -r1.31 -r1.32 src/sys/kern/subr_devsw.c
cvs rdiff -u -r1.144 -r1.145 src/sys/sys/conf.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.