dm: allow targets to return output from messages they are sent

Could be useful for a target to return stats or other information.
If a target does DMEMIT() anything to @result from its .message method
then it must return 1 to the caller.

Signed-off-By: Mike Snitzer <snitzer@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c
index a89fd8f44453..5acf77de5945 100644
--- a/drivers/md/dm-ioctl.c
+++ b/drivers/md/dm-ioctl.c
@@ -1595,7 +1595,7 @@ static int target_message(struct file *filp, struct dm_ioctl *param, size_t para
                 DMWARN("Target message sector outside device.");
                 r = -EINVAL;
         } else if (ti->type->message)
-                r = ti->type->message(ti, argc, argv);
+                r = ti->type->message(ti, argc, argv, result, maxlen);
         else {
                 DMWARN("Target type does not support messages");
                 r = -EINVAL;