CVS commit: [netbsd-6] src/sys

["Stephen Borrill" <sborrill%netbsd.org@localhost>]

Module Name:    src
Committed By:   sborrill
Date:           Tue Jun  3 09:17:52 UTC 2014

Modified Files:
        src/sys/arch/xen/xen [netbsd-6]: xbd_xenbus.c
        src/sys/dev [netbsd-6]: cgd.c dksubr.c dkvar.h

Log Message:
Pull up the following revisions(s) (requested by bouyer in ticket #1075):
        sys/arch/xen/xen/xbd_xenbus.c:  revision 1.63 via patch
        sys/dev/cgd.c:                  revision 1.87 via patch
        sys/dev/dksubr.c:               revision 1.50 via patch
        sys/dev/dkvar.h:                revision 1.19 via patch

Avoid xbd(4) reordering requests, which, depending on the underlying
hardware, can badly affect write performances. This can give up to a 5x
performance gain in sequencial writes.


To generate a diff of this commit:
cvs rdiff -u -r1.53 -r1.53.2.1 src/sys/arch/xen/xen/xbd_xenbus.c
cvs rdiff -u -r1.76 -r1.76.6.1 src/sys/dev/cgd.c
cvs rdiff -u -r1.42 -r1.42.14.1 src/sys/dev/dksubr.c
cvs rdiff -u -r1.15 -r1.15.14.1 src/sys/dev/dkvar.h

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