From: Mike Snitzer <snitzer@redhat.com>
Date: Tue, 4 Oct 2016 19:22:17 +0000 (-0400)
Subject: dm cache metadata: name the cache block that couldn't be loaded
X-Git-Tag: v4.11-rc1~139^2~8
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=48551054fc256285289f6d03abd50cb74fb71819;p=karo-tx-linux.git

dm cache metadata: name the cache block that couldn't be loaded

Improves __load_mapping_v1() and __load_mapping_v2() DMERR messages to
explicitly name the cache block number whose mapping couldn't be
loaded.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
---

diff --git a/drivers/md/dm-cache-metadata.c b/drivers/md/dm-cache-metadata.c
index 0610be7846dc..5a5ef996a26a 100644
--- a/drivers/md/dm-cache-metadata.c
+++ b/drivers/md/dm-cache-metadata.c
@@ -1316,8 +1316,10 @@ static int __load_mapping_v1(struct dm_cache_metadata *cmd,
 
 		r = fn(context, oblock, to_cblock(cb), flags & M_DIRTY,
 		       le32_to_cpu(hint), hints_valid);
-		if (r)
-			DMERR("policy couldn't load cblock");
+		if (r) {
+			DMERR("policy couldn't load cache block %llu",
+			      (unsigned long long) from_cblock(to_cblock(cb)));
+		}
 	}
 
 	return r;
@@ -1355,8 +1357,10 @@ static int __load_mapping_v2(struct dm_cache_metadata *cmd,
 		dirty = dm_bitset_cursor_get_value(dirty_cursor);
 		r = fn(context, oblock, to_cblock(cb), dirty,
 		       le32_to_cpu(hint), hints_valid);
-		if (r)
-			DMERR("policy couldn't load cblock");
+		if (r) {
+			DMERR("policy couldn't load cache block %llu",
+			      (unsigned long long) from_cblock(to_cblock(cb)));
+		}
 	}
 
 	return r;