diff options
author | Dan Williams <dan.j.williams@intel.com> | 2017-04-12 12:35:44 -0700 |
---|---|---|
committer | Dan Williams <dan.j.williams@intel.com> | 2017-04-20 11:57:52 -0700 |
commit | f26c5719b2d7b00de69eb83eb1c1c831759fdc9b (patch) | |
tree | d2f4dc917d539e7dae0424d7722affdc1cdd2006 /drivers/md/dm-snap.c | |
parent | b0686260fecaa924d8eff2ace94bee70506bc308 (diff) |
dm: add dax_device and dax_operations support
Allocate a dax_device to represent the capacity of a device-mapper
instance. Provide a ->direct_access() method via the new dax_operations
indirection that mirrors the functionality of the current direct_access
support via block_device_operations. Once fs/dax.c has been converted
to use dax_operations the old dm_blk_direct_access() will be removed.
A new helper dm_dax_get_live_target() is introduced to separate some of
the dm-specifics from the direct_access implementation.
This enabling is only for the top-level dm representation to upper
layers. Converting target direct_access implementations is deferred to a
separate patch.
Cc: Toshi Kani <toshi.kani@hpe.com>
Reviewed-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/md/dm-snap.c')
0 files changed, 0 insertions, 0 deletions