Function vfs_ref

freebsd/kern/vfs_mount.c:452–467

 */

void
vfs_ref(struct mount *mp)
{
	struct mount_pcpu *mpcpu;

	CTR2(KTR_VFS, "%s: mp %p", __func__, mp);
	if (vfs_op_thread_enter(mp, mpcpu)) {
		vfs_mp_count_add_pcpu(mpcpu, ref, 1);
		vfs_op_thread_exit(mp, mpcpu);
		return;
	}

	MNT_ILOCK(mp);
	MNT_REF(mp);
	MNT_IUNLOCK(mp);
}

void
vfs_rel(struct mount *mp)