tree 47d8281ecef487560af4254a828dbbc89c86b592
parent 75ae193626de3238ca5fb895868ec91c94e63b1b
author Ilya Dryomov <idryomov@gmail.com> 1553628058 +0100
committer Mike Snitzer <snitzer@redhat.com> 1554150362 -0400

dm table: propagate BDI_CAP_STABLE_WRITES to fix sporadic checksum errors

Some devices don't use blk_integrity but still want stable pages
because they do their own checksumming.  Examples include rbd and iSCSI
when data digests are negotiated.  Stacking DM (and thus LVM) on top of
these devices results in sporadic checksum errors.

Set BDI_CAP_STABLE_WRITES if any underlying device has it set.

Cc: stable@vger.kernel.org
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>