CVS commit: src/sys/dev/dm

["Tomohiro Kusumi" <tkusumi%netbsd.org@localhost>]

Module Name:    src
Committed By:   tkusumi
Date:           Thu Jan  2 06:22:23 UTC 2020

Modified Files:
        src/sys/dev/dm: dm.h dm_target.c
Added Files:
        src/sys/dev/dm: dm_target_flakey.c

Log Message:
dm: Add dm-flakey target

Ported from DragonFlyBSD, but this target had originally existed in
Linux kernel. See below for details.
https://www.kernel.org/doc/Documentation/device-mapper/dm-flakey.txt

Due to two technical issues, this hasn't been hooked to dm.kmod yet.
1) "tick" in hz(9) not working.
2) Unable to use ->b_private in nestiobuf callback when it's already
 used for mbp (see HAS_BUF_PRIV2).

taken-from: DragonFlyBSD


To generate a diff of this commit:
cvs rdiff -u -r1.52 -r1.53 src/sys/dev/dm/dm.h
cvs rdiff -u -r1.37 -r1.38 src/sys/dev/dm/dm_target.c
cvs rdiff -u -r0 -r1.1 src/sys/dev/dm/dm_target_flakey.c

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