stable inclusion
from linux-4.19.180
commit adbe8d9d3d45e02271f28f212375c67c30ced700

--------------------------------

commit a4c8dd9c upstream.

According to the definition of dm_iterate_devices_fn:
 * This function must iterate through each section of device used by the
 * target until it encounters a non-zero return code, which it then returns.
 * Returns zero if no callout returned non-zero.

For some target type (e.g. dm-stripe), one call of iterate_devices() may
iterate multiple underlying devices internally, in which case a non-zero
return code returned by iterate_devices_callout_fn will stop the iteration
in advance. No iterate_devices_callout_fn should return non-zero unless
device iteration should stop.

Rename dm_table_requires_stable_pages() to dm_table_any_dev_attr() and
elevate it for reuse to stop iterating (and return non-zero) on the
first device that causes iterate_devices_callout_fn to return non-zero.
Use dm_table_any_dev_attr() to properly iterate through devices.

Rename device_is_nonrot() to device_is_rotational() and invert logic
accordingly to fix improper disposition.

[jeffle: backport notes]
Also convert the no_sg_merge capability check, which is introduced by
commit 200612ec ("dm table: propagate QUEUE_FLAG_NO_SG_MERGE"), and
removed since commit 2705c937 ("block: kill QUEUE_FLAG_NO_SG_MERGE")
in v5.1.

Also convert the partial completion capability check, which is
introduced by commit 22c11858 ("dm: introduce
DM_TYPE_NVME_BIO_BASED"), and removed since commit 9c37de29 ("dm:
remove special-casing of bio-based immutable singleton target on NVMe")
in v5.10.

Fixes: c3c4555e ("dm table: clear add_random unless all devices have it set")
Fixes: 4693c966 ("dm table: propagate non rotational flag")
Cc: stable@vger.kernel.org
Signed-off-by: NJeffle Xu <jefflexu@linux.alibaba.com>
Signed-off-by: NMike Snitzer <snitzer@redhat.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: NCheng Jian <cj.chengjian@huawei.com>