From: Mike Snitzer Date: Tue, 9 Jun 2015 16:31:26 +0000 (-0400) Subject: dm thin: fail messages with EOPNOTSUPP when pool cannot handle messages X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=fd467696e8beb542144cd005ff96cd35fff41354;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git dm thin: fail messages with EOPNOTSUPP when pool cannot handle messages Use EOPNOTSUPP, rather than EINVAL, error code when user attempts to send the pool a message. Otherwise usespace is led to believe the message failed due to invalid argument. Reported-by: Zdenek Kabelac Signed-off-by: Mike Snitzer --- diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index 99daf2e332f4..c33f61a4cc28 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -3656,7 +3656,7 @@ static int pool_message(struct dm_target *ti, unsigned argc, char **argv) if (get_pool_mode(pool) >= PM_READ_ONLY) { DMERR("%s: unable to service pool target messages in READ_ONLY or FAIL mode", dm_device_name(pool->pool_md)); - return -EINVAL; + return -EOPNOTSUPP; } if (!strcasecmp(argv[0], "create_thin"))