[ndctl,v2,00/10] fixes and movability for system-ram mode

Message

Verma, Vishal L Oct. 20, 2019, 3:23 a.m. UTC

v2:
- Change MEM_FIND_ZONE to MEM_GET_ZONE (Dan)
- Remove the verbose race warning from runtime and just point to the man
  page (Dan)
- Remove the short option for '--no-movable' (Dan)

This patchset improves the user experience around memory onlining,
specifically the state it is onlined in - movable vs non-movable. It
also adds an option to make the memory non-movable when onlining.

Patches 1-3 perform some preparatory and clean up steps.
Patches 4-6 add a way to determine and display the 'movable' vs
'non-movable' state of memory.
Patches 7-8 attempt to detect a race with memory onlining, and add a
Documentation clarification
Patches 9-10 Add the new --no-movable option to commands that may
online memory.

Vishal Verma (10):
  libdaxctl: refactor path construction in op_for_one_memblock()
  libdaxctl: refactor memblock_is_online() checks
  daxctl/device.c: fix json output omission for reconfigure-device
  libdaxctl: add an API to determine if memory is movable
  libdaxctl: allow memblock_in_dev() to return an error
  daxctl: show a 'movable' attribute in device listings
  daxctl: detect races when onlining memory blocks
  Documentation: clarify memory movablity for reconfigure-device
  libdaxctl: add an API to online memory in a non-movable state
  daxctl: add --no-movable option for onlining memory

 Documentation/daxctl/daxctl-online-memory.txt |   2 +
 .../daxctl/daxctl-reconfigure-device.txt      |  24 +-
 Documentation/daxctl/movable-options.txt      |   9 +
 daxctl/device.c                               |  45 ++-
 daxctl/lib/libdaxctl-private.h                |  26 ++
 daxctl/lib/libdaxctl.c                        | 277 +++++++++++++-----
 daxctl/lib/libdaxctl.sym                      |   6 +
 daxctl/libdaxctl.h                            |   2 +
 util/json.c                                   |  14 +-
 9 files changed, 320 insertions(+), 85 deletions(-)
 create mode 100644 Documentation/daxctl/movable-options.txt