Don't define a direct_access function that fails, dm_dax_direct_access
already fails with -EIO if the pointer is zero;
Signed-off-by: Mikulas Patocka <mpatocka@xxxxxxxxxx>
---
drivers/md/dm-snap.c | 8 --------
1 file changed, 8 deletions(-)
Index: linux-2.6/drivers/md/dm-snap.c
===================================================================
--- linux-2.6.orig/drivers/md/dm-snap.c 2019-02-27 17:57:19.000000000 +0100
+++ linux-2.6/drivers/md/dm-snap.c 2019-02-27 17:57:47.000000000 +0100
@@ -2338,13 +2338,6 @@ static int origin_map(struct dm_target *
return do_origin(o->dev, bio);
}
-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;
-}
-
/*
* Set the target "max_io_len" field to the minimum of all the snapshots'
* chunk sizes.
@@ -2404,7 +2397,6 @@ static struct target_type origin_target
.postsuspend = origin_postsuspend,
.status = origin_status,
.iterate_devices = origin_iterate_devices,
- .direct_access = origin_dax_direct_access,
};
static struct target_type snapshot_target = {
--
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