An upcoming change is going to need a version of detach_mnt
that leaves the mount on the parents mnt_mounts list. Create
that version of detach_mnt now and call it __detach_mnt.
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
---
fs/namespace.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/fs/namespace.c b/fs/namespace.c
index a8afec9c81b6..c3f526ce0522 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -789,13 +789,12 @@ 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 __detach_mnt(struct mount *mnt, struct path *old_path)
{
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);
hlist_del_init_rcu(&mnt->mnt_hash);
hlist_del_init(&mnt->mnt_mp_list);
put_mountpoint(mnt->mnt_mp);
@@ -805,6 +804,15 @@ 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)
+{
+ __detach_mnt(mnt, old_path);
+ list_del_init(&mnt->mnt_child);
+}
+
+/*
+ * vfsmount lock must be held for write
+ */
void mnt_set_mountpoint(struct mount *mnt,
struct mountpoint *mp,
struct mount *child_mnt)
--
2.2.1
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