Module Name: src
Committed By: tkusumi
Date: Sat Dec 21 11:59:03 UTC 2019
Modified Files:
src/sys/dev/dm: dm.h dm_ioctl.c dm_table.c dm_target.c
dm_target_error.c dm_target_linear.c dm_target_mirror.c
dm_target_snapshot.c dm_target_stripe.c dm_target_zero.c
Log Message:
dm: Remove target's ->deps() by implementing deps in dm core
Retrieving device dependencies doesn't need to be target specific.
The reason it currently needs ->deps() is because dm core doesn't
have data structure that allows table to walk through target's
underlying devices. Add struct dm_mapping to be able to do this,
and remove ->deps()'s from targets which basically do the same thing.
=====(A) before this commit
table
| [dm core]
-------------------------------------------------------
| pdev pdev pdev [dm targets]
v ^ ^ ^
target----/---------/---------/
(void*)
=====(B) this commit
table---->mapping-->mapping-->mapping-->...
| | | |
| v v v [dm core]
-------------------------------------------------------
| pdev pdev pdev [dm targets]
v ^ ^ ^
target----/---------/---------/
(void*)
taken-from: DragonFlyBSD
To generate a diff of this commit:
cvs rdiff -u -r1.49 -r1.50 src/sys/dev/dm/dm.h
cvs rdiff -u -r1.47 -r1.48 src/sys/dev/dm/dm_ioctl.c
cvs rdiff -u -r1.16 -r1.17 src/sys/dev/dm/dm_table.c
cvs rdiff -u -r1.34 -r1.35 src/sys/dev/dm/dm_target.c \
src/sys/dev/dm/dm_target_linear.c
cvs rdiff -u -r1.26 -r1.27 src/sys/dev/dm/dm_target_error.c
cvs rdiff -u -r1.22 -r1.23 src/sys/dev/dm/dm_target_mirror.c
cvs rdiff -u -r1.36 -r1.37 src/sys/dev/dm/dm_target_snapshot.c
cvs rdiff -u -r1.41 -r1.42 src/sys/dev/dm/dm_target_stripe.c
cvs rdiff -u -r1.28 -r1.29 src/sys/dev/dm/dm_target_zero.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
