Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/fs/btrfs/ref-verify.h b/fs/btrfs/ref-verify.h
index b7d2a4e..855de37 100644
--- a/fs/btrfs/ref-verify.h
+++ b/fs/btrfs/ref-verify.h
@@ -9,9 +9,8 @@
 #ifdef CONFIG_BTRFS_FS_REF_VERIFY
 int btrfs_build_ref_tree(struct btrfs_fs_info *fs_info);
 void btrfs_free_ref_cache(struct btrfs_fs_info *fs_info);
-int btrfs_ref_tree_mod(struct btrfs_root *root, u64 bytenr, u64 num_bytes,
-		       u64 parent, u64 ref_root, u64 owner, u64 offset,
-		       int action);
+int btrfs_ref_tree_mod(struct btrfs_fs_info *fs_info,
+		       struct btrfs_ref *generic_ref);
 void btrfs_free_ref_tree_range(struct btrfs_fs_info *fs_info, u64 start,
 			       u64 len);
 
@@ -30,9 +29,8 @@
 {
 }
 
-static inline int btrfs_ref_tree_mod(struct btrfs_root *root, u64 bytenr,
-				     u64 num_bytes, u64 parent, u64 ref_root,
-				     u64 owner, u64 offset, int action)
+static inline int btrfs_ref_tree_mod(struct btrfs_fs_info *fs_info,
+		       struct btrfs_ref *generic_ref)
 {
 	return 0;
 }