BLKFRASET         155 include/uapi/linux/fs.h #define BLKFRASET  _IO(0x12,100)/* set filesystem (mm/filemap.c) read-ahead */
BLKFRASET         155 tools/include/uapi/linux/fs.h #define BLKFRASET  _IO(0x12,100)/* set filesystem (mm/filemap.c) read-ahead */