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| author |   Dan Williams <dan.j.williams@intel.com> | 2017-04-12 13:37:44 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2017-04-25 13:20:36 -0700 |
| commit | 817bf40265459578abc36c6bd53e27775b5c7ec4 (patch) | |
| tree | 7f77cc1bb97457d10d92df83a640d8d90023a653 /drivers/md/dm-snap.c | |
| parent | dm: add dax_device and dax_operations support (diff) | |
| download | linux-dev-817bf40265459578abc36c6bd53e27775b5c7ec4.tar.xz linux-dev-817bf40265459578abc36c6bd53e27775b5c7ec4.zip | |
dm: teach dm-targets to use a dax_device + dax_operations
Arrange for dm to lookup the dax services available from member devices.
Update the dax-capable targets, linear and stripe, to route dax
operations to the underlying device. Changes the target-internal
->direct_access() method to more closely align with the dax_operations
->direct_access() calling convention.
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')
| -rw-r--r-- | drivers/md/dm-snap.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c index c65feeada864..e152d9817c81 100644 --- a/drivers/md/dm-snap.c +++ b/drivers/md/dm-snap.c @@ -2302,8 +2302,8 @@ static int origin_map(struct dm_target *ti, struct bio *bio) return do_origin(o->dev, bio); } -static long origin_direct_access(struct dm_target *ti, sector_t sector, - void **kaddr, pfn_t *pfn, long size) +static long origin_dax_direct_access(struct dm_target *ti, pgoff_t pgoff, + long nr_pages, void **kaddr, pfn_t *pfn) { DMWARN("device does not support dax."); return -EIO; @@ -2368,7 +2368,7 @@ static struct target_type origin_target = { .postsuspend = origin_postsuspend, .status = origin_status, .iterate_devices = origin_iterate_devices, - .direct_access = origin_direct_access, + .direct_access = origin_dax_direct_access, }; static struct target_type snapshot_target = { |