Symbol: ffs_isfreeblock
sys/ufs/ffs/ffs_alloc.c
1283
if (!ffs_isfreeblock(fs, cg_blksfree(cgp), blkno)) {
sys/ufs/ffs/ffs_extern.h
128
int ffs_isfreeblock(struct fs *, u_char *, daddr_t);
sys/ufs/ffs/ffs_subr.c
84
int ffs_isfreeblock(struct fs *, u_char *, daddr_t);