dm writecache: reject asynchronous pmem devices
authorMichal Suchanek <msuchanek@suse.de>
Tue, 30 Jun 2020 15:49:24 +0000 (17:49 +0200)
committerMike Snitzer <snitzer@redhat.com>
Wed, 8 Jul 2020 15:06:57 +0000 (11:06 -0400)
commita46624580376a3a0beb218d94cbc7f258696e29f
tree26716b5314274854e059edb71bd7396c0f8e559f
parent382761dc6312965a11f82f2217e16ec421bf17ae
dm writecache: reject asynchronous pmem devices

DM writecache does not handle asynchronous pmem. Reject it when
supplied as cache.

Link: https://lore.kernel.org/linux-nvdimm/87lfk5hahc.fsf@linux.ibm.com/
Fixes: 6e84200c0a29 ("virtio-pmem: Add virtio pmem driver")
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Acked-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org # 5.3+
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
drivers/md/dm-writecache.c