MNTK_UNMOUNTF
if (vp->v_mount->mnt_kern_flag & MNTK_UNMOUNTF)
#define NFSCL_FORCEDISM(m) (((m)->mnt_kern_flag & MNTK_UNMOUNTF) != 0 || \
if ((mp->mnt_kern_flag & MNTK_UNMOUNTF) == 0) {
if ((nmp->nm_mountp->mnt_kern_flag & MNTK_UNMOUNTF) != 0) {
mp->mnt_kern_flag |= MNTK_UNMOUNT | MNTK_UNMOUNTF;
mp->mnt_kern_flag |= MNTK_UNMOUNTF;
mp->mnt_kern_flag &= ~(MNTK_UNMOUNT | MNTK_UNMOUNTF);
((mp->mnt_kern_flag & MNTK_UNMOUNTF) != 0 ||
MNT_KERN_FLAG(MNTK_UNMOUNTF);