LZ4_DISTANCE_MAX   11 fs/erofs/decompressor.c #ifndef LZ4_DISTANCE_MAX	/* history window size */
LZ4_DISTANCE_MAX   15 fs/erofs/decompressor.c #define LZ4_MAX_DISTANCE_PAGES	(DIV_ROUND_UP(LZ4_DISTANCE_MAX, PAGE_SIZE) + 1)