ffs_cgread
if (!(bp = ffs_cgread(fs, ip, cg)))
if (!(bp = ffs_cgread(fs, ip, cg)))
if (!(bp = ffs_cgread(fs, pip, cg)))
struct buf * ffs_cgread(struct fs *, struct inode *, u_int);
if (!(bp = ffs_cgread(fs, ip, cg)))
if (!(bp = ffs_cgread(fs, ip, cg)))