[dm-devel] [PATCH] Print a warning message when hardware handler parameters are ignored

[Chandra Seetharaman <sekharan us ibm com>]

Currently dm ignores the parameters provided to hardware handlers
without providing any notifications to the user.

This patch just prints a warning message so that the user knows that
the arguments are ignored.

Signed-off-by: Chandra Seetharaman <sekharan us ibm com>
---
Index: linux-2.6.27-rc3/drivers/md/dm-mpath.c
===================================================================
--- linux-2.6.27-rc3.orig/drivers/md/dm-mpath.c
+++ linux-2.6.27-rc3/drivers/md/dm-mpath.c
@@ -708,6 +708,10 @@ static int parse_hw_handler(struct arg_s
 		m->hw_handler_name = NULL;
 		return -EINVAL;
 	}
+
+	if (hw_argc > 1)
+		DMWARN("Ignoring user specified arguments for hardware handler \"%s\"",
+				m->hw_handler_name);
 	consume(as, hw_argc - 1);
 
 	return 0;