ST_NBLOCKSIZE     205 src/system.h   #  define ST_NBLOCKSIZE 1024
ST_NBLOCKSIZE     209 src/system.h   #   define ST_NBLOCKSIZE (4 * 1024)
ST_NBLOCKSIZE     227 src/system.h   #  define ST_NBLOCKSIZE S_BLKSIZE
ST_NBLOCKSIZE     229 src/system.h   #  define ST_NBLOCKSIZE 512