[PATCH 3/3] btrfs: fix message not properly printing interval when adding extent map

From: fdmanana@kernel.org
To: linux-btrfs@vger.kernel.org
Subject: [PATCH 3/3] btrfs: fix message not properly printing interval when adding extent map
Date: Wed, 13 Mar 2024 13:20:46 +0000	[thread overview]
Message-ID: <ed32b1183350d7b8a5c9cce7d3e04cada65b828d.1710335452.git.fdmanana@suse.com> (raw)
In-Reply-To: <cover.1710335452.git.fdmanana@suse.com>

From: Filipe Manana <fdmanana@suse.com>

At btrfs_add_extent_mapping(), if we are unable to merge the existing
extent map, we print a warning message that suggests interval ranges in
the form "[X, Y)", where the first element is the inclusive start offset
of a range and the second element is the exclusive end offset. However
we end up printing the length of the ranges instead of the exclusive end
offsets. So fix this by printing the range end offsets.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
---
 fs/btrfs/extent_map.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c
index 2cfc6e8cf76f..16685cb8a91d 100644
--- a/fs/btrfs/extent_map.c
+++ b/fs/btrfs/extent_map.c
@@ -634,8 +634,8 @@ int btrfs_add_extent_mapping(struct btrfs_fs_info *fs_info,
 				*em_in = NULL;
 				WARN_ONCE(ret,
 "extent map merge error existing [%llu, %llu) with em [%llu, %llu) start %llu\n",
-					  existing->start, existing->len,
-					  orig_start, orig_len, start);
+					  existing->start, extent_map_end(existing),
+					  orig_start, orig_start + orig_len, start);
 			}
 			free_extent_map(existing);
 		}
-- 
2.43.0

