kill __d_materialise_dentry()

it folds into __d_move() now

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/dcache.c b/fs/dcache.c
index 0551fcc7671c00aace2e2f236263ae9516fa6c55..6e543173a5d80ad08838d18f250a5cef8a8f04fb 100644 (file)
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -2511,28 +2511,28 @@ static void __d_move(struct dentry *dentry, struct dentry *target,
        switch_names(dentry, target);
        swap(dentry->d_name.hash, target->d_name.hash);
 
-       /* ... and switch the parents */
+       /* ... and switch them in the tree */
        if (IS_ROOT(dentry)) {
+               /* splicing a tree */
                dentry->d_parent = target->d_parent;
                target->d_parent = target;
                list_del_init(&target->d_u.d_child);
+               list_move(&dentry->d_u.d_child, &dentry->d_parent->d_subdirs);
        } else {
+               /* swapping two dentries */
                swap(dentry->d_parent, target->d_parent);
-
-               /* And add them back to the (new) parent lists */
                list_move(&target->d_u.d_child, &target->d_parent->d_subdirs);
+               list_move(&dentry->d_u.d_child, &dentry->d_parent->d_subdirs);
+               if (exchange)
+                       fsnotify_d_move(target);
+               fsnotify_d_move(dentry);
        }
 
-       list_move(&dentry->d_u.d_child, &dentry->d_parent->d_subdirs);
-
        write_seqcount_end(&target->d_seq);
        write_seqcount_end(&dentry->d_seq);
 
        dentry_unlock_parents_for_move(dentry, target);
-       if (exchange)
-               fsnotify_d_move(target);
        spin_unlock(&target->d_lock);
-       fsnotify_d_move(dentry);
        spin_unlock(&dentry->d_lock);
 }
 
@@ -2631,40 +2631,6 @@ out_err:
        return ret;
 }
 
-/*
- * Prepare an anonymous dentry for life in the superblock's dentry tree as a
- * named dentry in place of the dentry to be replaced.
- */
-static void __d_materialise_dentry(struct dentry *dentry, struct dentry *target)
-{
-       dentry_lock_for_move(dentry, target);
-
-       write_seqcount_begin(&dentry->d_seq);
-       write_seqcount_begin_nested(&target->d_seq, DENTRY_D_LOCK_NESTED);
-
-       switch_names(dentry, target);
-       swap(dentry->d_name.hash, target->d_name.hash);
-
-       dentry->d_parent = target->d_parent;
-       target->d_parent = target;
-       list_del_init(&target->d_u.d_child);
-       list_move(&dentry->d_u.d_child, &dentry->d_parent->d_subdirs);
-       if (likely(!d_unhashed(dentry))) {
-               hlist_bl_lock(&dentry->d_sb->s_anon);
-               __hlist_bl_del(&dentry->d_hash);
-               dentry->d_hash.pprev = NULL;
-               hlist_bl_unlock(&dentry->d_sb->s_anon);
-       }
-       __d_rehash(dentry, d_hash(dentry->d_parent, dentry->d_name.hash));
-
-       write_seqcount_end(&target->d_seq);
-       write_seqcount_end(&dentry->d_seq);
-
-       dentry_unlock_parents_for_move(dentry, target);
-       spin_unlock(&target->d_lock);
-       spin_unlock(&dentry->d_lock);
-}
-
 /**
  * d_splice_alias - splice a disconnected dentry into the tree if one exists
  * @inode:  the inode which may have a disconnected dentry
@@ -2710,7 +2676,7 @@ struct dentry *d_splice_alias(struct inode *inode, struct dentry *dentry)
                                return ERR_PTR(-EIO);
                        }
                        write_seqlock(&rename_lock);
-                       __d_materialise_dentry(new, dentry);
+                       __d_move(new, dentry, false);
                        write_sequnlock(&rename_lock);
                        spin_unlock(&inode->i_lock);
                        security_d_instantiate(new, inode);
@@ -2771,7 +2737,7 @@ struct dentry *d_materialise_unique(struct dentry *dentry, struct inode *inode)
                        } else if (IS_ROOT(alias)) {
                                /* Is this an anonymous mountpoint that we
                                 * could splice into our tree? */
-                               __d_materialise_dentry(alias, dentry);
+                               __d_move(alias, dentry, false);
                                write_sequnlock(&rename_lock);
                                goto found;
                        } else {