SURROGATE_BITS 153 fs/nls/nls_base.c ((u >> 10) & SURROGATE_BITS), SURROGATE_BITS 157 fs/nls/nls_base.c (u & SURROGATE_BITS), SURROGATE_BITS 214 fs/nls/nls_base.c u = PLANE_SIZE + ((u & SURROGATE_BITS) << 10) SURROGATE_BITS 215 fs/nls/nls_base.c + (v & SURROGATE_BITS);