btrfs: add block-group tree to lockdep classes

commit 1a1b0e729d227f9f758f7b5f1c997e874e94156e upstream.

The block group tree was not present among the lockdep classes. We could
get potentially lockdep warnings but so far none has been seen, also
because block-group-tree is a relatively new feature.

CC: stable@vger.kernel.org # 6.1+
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/btrfs/locking.c b/fs/btrfs/locking.c
index 0eab3cb..df98e64 100644 (file)
--- a/fs/btrfs/locking.c
+++ b/fs/btrfs/locking.c
@@ -56,8 +56,8 @@
 
 static struct btrfs_lockdep_keyset {
        u64                     id;             /* root objectid */
-       /* Longest entry: btrfs-free-space-00 */
-       char                    names[BTRFS_MAX_LEVEL][20];
+       /* Longest entry: btrfs-block-group-00 */
+       char                    names[BTRFS_MAX_LEVEL][24];
        struct lock_class_key   keys[BTRFS_MAX_LEVEL];
 } btrfs_lockdep_keysets[] = {
        { .id = BTRFS_ROOT_TREE_OBJECTID,       DEFINE_NAME("root")     },
@@ -71,6 +71,7 @@ static struct btrfs_lockdep_keyset {
        { .id = BTRFS_DATA_RELOC_TREE_OBJECTID, DEFINE_NAME("dreloc")   },
        { .id = BTRFS_UUID_TREE_OBJECTID,       DEFINE_NAME("uuid")     },
        { .id = BTRFS_FREE_SPACE_TREE_OBJECTID, DEFINE_NAME("free-space") },
+       { .id = BTRFS_BLOCK_GROUP_TREE_OBJECTID, DEFINE_NAME("block-group") },
        { .id = 0,                              DEFINE_NAME("tree")     },
 };