CVS commit: src/sys

["Michael van Elst" <mlelstv%netbsd.org@localhost>]

Module Name:    src
Committed By:   mlelstv
Date:           Sun Aug 16 18:00:03 UTC 2015

Modified Files:
        src/sys/arch/xen/xen: xbd_xenbus.c
        src/sys/dev: cgd.c dksubr.c dkvar.h ld.c
        src/sys/sys: disk.h param.h

Log Message:
Two changes to the dksubr interface.

- d_diskstart callback now processes a single buffer only.
  The new wrapper function dk_start processes the queue,
  performs other buffer handling and also provides locking
  for the the data structures.

- add d_discard callback to handle device specific function inside
  the new dk_discard helper function.

Replace splbio with mutex to protect queue and disk structure.
Refactor common code in dk_strategy and dk_discard into dk_translate.

Adjust and simplify ld(4), cgd(4) and xbd(4) drivers accordingly.

ld(4) now becomes MP_SAFE.

Bump kernel version.


To generate a diff of this commit:
cvs rdiff -u -r1.71 -r1.72 src/sys/arch/xen/xen/xbd_xenbus.c
cvs rdiff -u -r1.98 -r1.99 src/sys/dev/cgd.c
cvs rdiff -u -r1.70 -r1.71 src/sys/dev/dksubr.c
cvs rdiff -u -r1.20 -r1.21 src/sys/dev/dkvar.h
cvs rdiff -u -r1.88 -r1.89 src/sys/dev/ld.c
cvs rdiff -u -r1.64 -r1.65 src/sys/sys/disk.h
cvs rdiff -u -r1.482 -r1.483 src/sys/sys/param.h

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