ffs_breadz
int ffs_breadz(struct ufsmount *, struct vnode *, daddr_t, daddr_t, int,
error = ffs_breadz(VFSTOUFS(vp->v_mount), ITODEVVP(ip), bn, bn,
error = ffs_breadz(ump, vp, lbn, dbn, (int)fs->fs_bsize, NULL, NULL, 0,
error = ffs_breadz(ump, ITOV(ip), lbn, blkptrtodb(ump, blkno),
error = ffs_breadz(ump, ump->um_devvp, dbn, dbn, (int)fs->fs_bsize,
error = ffs_breadz(ump, freeblks->fb_devvp, dbn, dbn,
error = ffs_breadz(ump, ump->um_devvp, dbn, dbn,
error = ffs_breadz(ump, ump->um_devvp, dbn, dbn,