ffs_unmount       142 ufs/ffs/ffs_extern.h int ffs_unmount(struct mount *, int, struct proc *);
ffs_unmount        78 ufs/ffs/ffs_vfsops.c 	ffs_unmount,
ffs_unmount        71 ufs/mfs/mfs_vfsops.c 	ffs_unmount,