diff options
| author | Toshi Kani <toshi.kani@hpe.com> | 2016-06-28 13:37:16 -0600 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2016-07-20 23:49:51 -0400 |
| commit | f6e629bd2379dceb547be93915314307871a7f6c (patch) | |
| tree | 3a2ef8ed074e273c081eca2ca0adfd4bce6f561d /drivers/md/dm-ioctl.c | |
| parent | beec25b4573bc310f5a12cf33207b20ecc30945c (diff) | |
dm snap: add fake origin_direct_access
dax-capable mapped-device is marked as DM_TYPE_DAX_BIO_BASED,
which supports both dax and bio-based operations. dm-snap
needs to work with dax-capable device when bio-based operation
is used.
Add fake origin_direct_access() to origin device so that its
origin device is also marked as DM_TYPE_DAX_BIO_BASED for
dax-capable device. This allows to extend target's DM table.
dm-snap works normally when bio-based operation is used.
dm-snap does not support dax operation, and mount with dax
option to a target device or snapshot device fails.
Signed-off-by: Toshi Kani <toshi.kani@hpe.com>
Cc: Mike Snitzer <snitzer@redhat.com>
Cc: Alasdair Kergon <agk@redhat.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm-ioctl.c')
0 files changed, 0 insertions, 0 deletions