From: Chandra Seetharaman <sekharan@us.ibm.com>
Date: Thu, 13 Nov 2008 23:39:06 +0000 (+0000)
Subject: dm mpath: warn if args ignored
X-Git-Tag: v2.6.28-rc5~17^2~2
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=14e98c5ca8bed825f65cbf11cb0ffd2c09dac2f4;p=linux-2.6-omap-h63xx.git

dm mpath: warn if args ignored

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>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
---

diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 58b1015260f..3d7f4923cd1 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -708,6 +708,10 @@ static int parse_hw_handler(struct arg_set *as, struct multipath *m)
 		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;