[PATCH] bcache: use pr_err instead of pr_notice if we are really error

[Lin Feng <linf@wangsu.com>]

In bcache we have:
./bset.c:			pr_notice("loop %u, %llu per us\n", size,
./super.c:	pr_notice("error %s: %s\n", dc->backing_dev_name, err);
./super.c:		pr_notice("invalidating existing data\n");
./super.c:		pr_notice("error %s: %s\n", ca->cache_dev_name, err);
./super.c:		pr_notice("error %s: %s\n", ca->cache_dev_name, err);
./super.c:			pr_notice("Timeout waiting for devices to be closed\n");

and 3 sites with string 'error' are really error happening on device
register.

Signed-off-by: Lin Feng <linf@wangsu.com>
---
 drivers/md/bcache/super.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index f2874c77ff79..18a2e4bea9c2 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -1493,7 +1493,7 @@ static int register_bdev(struct cache_sb *sb, struct cache_sb_disk *sb_disk,
 
 	return 0;
 err:
-	pr_notice("error %s: %s\n", dc->backing_dev_name, err);
+	pr_err("%s: %s\n", dc->backing_dev_name, err);
 	bcache_device_stop(&dc->disk);
 	return ret;
 }
@@ -2338,7 +2338,7 @@ static int cache_alloc(struct cache *ca)
 err_free:
 	module_put(THIS_MODULE);
 	if (err)
-		pr_notice("error %s: %s\n", ca->cache_dev_name, err);
+		pr_err("%s: %s\n", ca->cache_dev_name, err);
 	return ret;
 }
 
@@ -2397,7 +2397,7 @@ static int register_cache(struct cache_sb *sb, struct cache_sb_disk *sb_disk,
 
 err:
 	if (err)
-		pr_notice("error %s: %s\n", ca->cache_dev_name, err);
+		pr_err("%s: %s\n", ca->cache_dev_name, err);
 
 	return ret;
 }
-- 
2.31.1