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dm raid: avoid WARN_ON() in raid10_md_layout_to_format()

Message ID 20170713153322.24294-1-heinzm@redhat.com (mailing list archive)
State Accepted, archived
Delegated to: Mike Snitzer
Headers show

Commit Message

Heinz Mauelshagen July 13, 2017, 3:33 p.m. UTC 
From: Heinz Mauelshagen <heinzm@redhat.com>

Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
---
 drivers/md/dm-raid.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
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Patch

diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index 2e10c2f..b409015 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -564,9 +564,10 @@  static const char *raid10_md_layout_to_format(int layout)
 	if (__raid10_near_copies(layout) > 1)
 		return "near";
 
-	WARN_ON(__raid10_far_copies(layout) < 2);
+	if (__raid10_far_copies(layout) > 1)
+		return "far";
 
-	return "far";
+	return "unknown";
 }
 
 /* Return md raid10 algorithm for @name */