All symbols starting with `d' in bsd/ufs/ffs

• dblksize bsd/ufs/ffs/fs.h:501
• dbtofsb bsd/ufs/ffs/fs.h:412
• DEFAULTOPT bsd/ufs/ffs/fs.h:159
• doasyncfree bsd/ufs/ffs/ffs_alloc.c:381
• doclusterread bsd/ufs/ffs/ffs_vnops.c:264
• doclusterwrite bsd/ufs/ffs/ffs_vnops.c:265
• doreallocblks bsd/ufs/ffs/ffs_alloc.c:382
• DOUBLE bsd/ufs/ffs/ffs_inode.c:179
• dtog bsd/ufs/ffs/fs.h:442
• dtogd bsd/ufs/ffs/fs.h:443