From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ross Zwisler Subject: [PATCH v2 6/7] dm-snap: remove unnecessary direct_access() stub Date: Tue, 29 May 2018 13:51:05 -0600 Message-ID: <20180529195106.14268-7-ross.zwisler@linux.intel.com> References: <20180529195106.14268-1-ross.zwisler@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20180529195106.14268-1-ross.zwisler-VuQAYsv1563Yd54FQh9/CA@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linux-nvdimm-bounces-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org Sender: "Linux-nvdimm" To: Toshi Kani , Mike Snitzer , dm-devel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org Cc: linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-xfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org List-Id: dm-devel.ids This stub was added so that we could use dm-snap with DM_TYPE_DAX_BIO_BASED mode devices. That mode and the transition issues associated with it no longer exist, so we can remove this dead code. Signed-off-by: Ross Zwisler --- drivers/md/dm-snap.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c index 216035be5661..0143b158d52d 100644 --- a/drivers/md/dm-snap.c +++ b/drivers/md/dm-snap.c @@ -2305,13 +2305,6 @@ static int origin_map(struct dm_target *ti, struct bio *bio) 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. @@ -2371,7 +2364,6 @@ 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 = { -- 2.14.3