On Wed, Feb 27 2019 at 12:02pm -0500,
Mikulas Patocka <mpatocka@xxxxxxxxxx> wrote:
> 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 = {
Applied to dm-5.1 branch, thanks.
Mike
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