INIT_LIST_HEAD(&mnt->mnt_share);
INIT_LIST_HEAD(&mnt->mnt_slave_list);
INIT_LIST_HEAD(&mnt->mnt_slave);
+ INIT_LIST_HEAD(&mnt->mnt_mp_list);
#ifdef CONFIG_FSNOTIFY
INIT_HLIST_HEAD(&mnt->mnt_fsnotify_marks);
#endif
mp->m_dentry = dentry;
mp->m_count = 1;
list_add(&mp->m_hash, chain);
+ INIT_LIST_HEAD(&mp->m_list);
return mp;
}
{
if (!--mp->m_count) {
struct dentry *dentry = mp->m_dentry;
+ BUG_ON(!list_empty(&mp->m_list));
spin_lock(&dentry->d_lock);
dentry->d_flags &= ~DCACHE_MOUNTED;
spin_unlock(&dentry->d_lock);
mnt->mnt_mountpoint = mnt->mnt.mnt_root;
list_del_init(&mnt->mnt_child);
list_del_init(&mnt->mnt_hash);
+ list_del_init(&mnt->mnt_mp_list);
put_mountpoint(mnt->mnt_mp);
mnt->mnt_mp = NULL;
}
child_mnt->mnt_mountpoint = dget(mp->m_dentry);
child_mnt->mnt_parent = mnt;
child_mnt->mnt_mp = mp;
+ list_add_tail(&child_mnt->mnt_mp_list, &mp->m_list);
}
/*
list_del_init(&p->mnt_child);
if (mnt_has_parent(p)) {
p->mnt_parent->mnt_ghosts++;
+ list_del_init(&p->mnt_mp_list);
put_mountpoint(p->mnt_mp);
p->mnt_mp = NULL;
}
return retval;
}
+void detach_mounts(struct dentry *dentry)
+{
+ struct mountpoint *mp;
+ struct mount *mnt;
+
+ namespace_lock();
+ if (!d_mountpoint(dentry))
+ goto out_unlock;
+
+ mp = new_mountpoint(dentry);
+ if (IS_ERR(mp))
+ goto out_unlock;
+
+ br_write_lock(&vfsmount_lock);
+ while (!list_empty(&mp->m_list)) {
+ mnt = list_first_entry(&mp->m_list, struct mount, mnt_mp_list);
+ umount_tree(mnt, 1);
+ }
+ br_write_unlock(&vfsmount_lock);
+ put_mountpoint(mp);
+out_unlock:
+ namespace_unlock();
+}
+
/*
* Is the caller allowed to modify his namespace?
*/