v4.9.y to v5.1.y: fs/btrfs/file.c: In function 'btrfs_punch_hole': fs/btrfs/file.c:2787:27: error: invalid initializer struct timespec64 now = current_time(inode); ^~~~~~~~~~~~ fs/btrfs/file.c:2790:18: error: incompatible types when assigning to type 'struct timespec' from type 'struct timespec64' v4.19.y, v5.1.y: fs/btrfs/props.c: In function 'prop_compression_validate': fs/btrfs/props.c:369:6: error: implicit declaration of function 'btrfs_compression_is_valid_type' My apologies for the noise if this has already been reported/fixed. Guenter