{
struct path path;
int retval;
+ int lookup_flags = 0;
- retval = user_path(name, &path);
+ if (flags & ~(MNT_FORCE | MNT_DETACH | MNT_EXPIRE | UMOUNT_NOFOLLOW))
+ return -EINVAL;
+
+ if (!(flags & UMOUNT_NOFOLLOW))
+ lookup_flags |= LOOKUP_FOLLOW;
+
+ retval = user_path_at(AT_FDCWD, name, lookup_flags, &path);
if (retval)
goto out;
retval = -EINVAL;
{
int err;
- mnt_flags &= ~(MNT_SHARED | MNT_WRITE_HOLD);
+ mnt_flags &= ~(MNT_SHARED | MNT_WRITE_HOLD | MNT_INTERNAL);
down_write(&namespace_sem);
/* Something was mounted here while we slept */
void put_mnt_ns(struct mnt_namespace *ns)
{
- struct vfsmount *root;
LIST_HEAD(umount_list);
- if (!atomic_dec_and_lock(&ns->count, &vfsmount_lock))
+ if (!atomic_dec_and_test(&ns->count))
return;
- root = ns->root;
- ns->root = NULL;
- spin_unlock(&vfsmount_lock);
down_write(&namespace_sem);
spin_lock(&vfsmount_lock);
- umount_tree(root, 0, &umount_list);
+ umount_tree(ns->root, 0, &umount_list);
spin_unlock(&vfsmount_lock);
up_write(&namespace_sem);
release_mounts(&umount_list);