From 1eb5fa849f2bf9186a618e85bea23f02e527540a Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Wed, 28 Feb 2018 15:59:59 -0500 Subject: 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 --- drivers/md/dm-era-target.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/md/dm-era-target.c') diff --git a/drivers/md/dm-era-target.c b/drivers/md/dm-era-target.c index 73a5c198113a..8e48920a3ffa 100644 --- a/drivers/md/dm-era-target.c +++ b/drivers/md/dm-era-target.c @@ -1635,7 +1635,8 @@ err: DMEMIT("Error"); } -static int era_message(struct dm_target *ti, unsigned argc, char **argv) +static int era_message(struct dm_target *ti, unsigned argc, char **argv, + char *result, unsigned maxlen) { struct era *era = ti->private; -- cgit 1.4.1