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authorDan Williams <dan.j.williams@intel.com>2017-04-12 23:37:44 +0300
committerDan Williams <dan.j.williams@intel.com>2017-04-25 23:20:36 +0300
commit817bf40265459578abc36c6bd53e27775b5c7ec4 (patch)
tree7f77cc1bb97457d10d92df83a640d8d90023a653 /drivers/md/dm-snap.c
parentf26c5719b2d7b00de69eb83eb1c1c831759fdc9b (diff)
downloadlinux-817bf40265459578abc36c6bd53e27775b5c7ec4.tar.xz
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.c6
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 = {