__d_materialise_unique() is too generic
Its first argument is always non-root, while the second one is
always root.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/dcache.c b/fs/dcache.c
index 0e4b5fa..ada6123 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -2394,7 +2394,7 @@
*/
static void __d_materialise_dentry(struct dentry *dentry, struct dentry *anon)
{
- struct dentry *dparent, *aparent;
+ struct dentry *dparent;
dentry_lock_for_move(anon, dentry);
@@ -2402,24 +2402,15 @@
write_seqcount_begin(&anon->d_seq);
dparent = dentry->d_parent;
- aparent = anon->d_parent;
switch_names(dentry, anon);
swap(dentry->d_name.hash, anon->d_name.hash);
- dentry->d_parent = (aparent == anon) ? dentry : aparent;
- list_del(&dentry->d_u.d_child);
- if (!IS_ROOT(dentry))
- list_add(&dentry->d_u.d_child, &dentry->d_parent->d_subdirs);
- else
- INIT_LIST_HEAD(&dentry->d_u.d_child);
-
- anon->d_parent = (dparent == dentry) ? anon : dparent;
+ dentry->d_parent = dentry;
+ list_del_init(&dentry->d_u.d_child);
+ anon->d_parent = dparent;
list_del(&anon->d_u.d_child);
- if (!IS_ROOT(anon))
- list_add(&anon->d_u.d_child, &anon->d_parent->d_subdirs);
- else
- INIT_LIST_HEAD(&anon->d_u.d_child);
+ list_add(&anon->d_u.d_child, &dparent->d_subdirs);
write_seqcount_end(&dentry->d_seq);
write_seqcount_end(&anon->d_seq);