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-rw-r--r--fs/namespace.c21
1 files changed, 12 insertions, 9 deletions
diff --git a/fs/namespace.c b/fs/namespace.c
index acc5583764dc..e669a3bf86e7 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -798,10 +798,8 @@ static void __touch_mnt_namespace(struct mnt_namespace *ns)
/*
* vfsmount lock must be held for write
*/
-static void detach_mnt(struct mount *mnt, struct path *old_path)
+static void unhash_mnt(struct mount *mnt)
{
- old_path->dentry = mnt->mnt_mountpoint;
- old_path->mnt = &mnt->mnt_parent->mnt;
mnt->mnt_parent = mnt;
mnt->mnt_mountpoint = mnt->mnt.mnt_root;
list_del_init(&mnt->mnt_child);
@@ -814,6 +812,16 @@ static void detach_mnt(struct mount *mnt, struct path *old_path)
/*
* vfsmount lock must be held for write
*/
+static void detach_mnt(struct mount *mnt, struct path *old_path)
+{
+ old_path->dentry = mnt->mnt_mountpoint;
+ old_path->mnt = &mnt->mnt_parent->mnt;
+ unhash_mnt(mnt);
+}
+
+/*
+ * vfsmount lock must be held for write
+ */
void mnt_set_mountpoint(struct mount *mnt,
struct mountpoint *mp,
struct mount *child_mnt)
@@ -1362,15 +1370,10 @@ static void umount_tree(struct mount *mnt, enum umount_tree_flags how)
pin_insert_group(&p->mnt_umount, &p->mnt_parent->mnt, &unmounted);
if (mnt_has_parent(p)) {
- hlist_del_init(&p->mnt_mp_list);
- put_mountpoint(p->mnt_mp);
mnt_add_count(p->mnt_parent, -1);
/* old mountpoint will be dropped when we can do that */
p->mnt_ex_mountpoint = p->mnt_mountpoint;
- p->mnt_mountpoint = p->mnt.mnt_root;
- p->mnt_parent = p;
- p->mnt_mp = NULL;
- hlist_del_init_rcu(&p->mnt_hash);
+ unhash_mnt(p);
}
change_mnt_propagation(p, MS_PRIVATE);
}