selinuxfs: don't open-code d_genocide()

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

1 files changed, 3 insertions, 49 deletions

diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index 33db1ad4fd10..1684bcc78b34 100644
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -1195,30 +1195,8 @@ static const struct file_operations sel_commit_bools_ops = {
 
 static void sel_remove_entries(struct dentry *de)
 {
-        struct list_head *node;
-
-        spin_lock(&de->d_lock);
-        node = de->d_subdirs.next;
-        while (node != &de->d_subdirs) {
-                struct dentry *d = list_entry(node, struct dentry, d_child);
-
-                spin_lock_nested(&d->d_lock, DENTRY_D_LOCK_NESTED);
-                list_del_init(node);
-
-                if (d->d_inode) {
-                        dget_dlock(d);
-                        spin_unlock(&de->d_lock);
-                        spin_unlock(&d->d_lock);
-                        d_delete(d);
-                        simple_unlink(de->d_inode, d);
-                        dput(d);
-                        spin_lock(&de->d_lock);
-                } else
-                        spin_unlock(&d->d_lock);
-                node = de->d_subdirs.next;
-        }
-
-        spin_unlock(&de->d_lock);
+        d_genocide(de);
+        shrink_dcache_parent(de);
 }
 
 #define BOOL_DIR_NAME "booleans"
@@ -1668,37 +1646,13 @@ static int sel_make_class_dir_entries(char *classname, int index,
         return rc;
 }
 
-static void sel_remove_classes(void)
-{
-        struct list_head *class_node;
-
-        list_for_each(class_node, &class_dir->d_subdirs) {
-                struct dentry *class_subdir = list_entry(class_node,
-                                        struct dentry, d_child);
-                struct list_head *class_subdir_node;
-
-                list_for_each(class_subdir_node, &class_subdir->d_subdirs) {
-                        struct dentry *d = list_entry(class_subdir_node,
-                                                struct dentry, d_child);
-
-                        if (d->d_inode)
-                                if (d->d_inode->i_mode & S_IFDIR)
-                                        sel_remove_entries(d);
-                }
-
-                sel_remove_entries(class_subdir);
-        }
-
-        sel_remove_entries(class_dir);
-}
-
 static int sel_make_classes(void)
 {
         int rc, nclasses, i;
         char **classes;
 
         /* delete any existing entries */
-        sel_remove_classes();
+        sel_remove_entries(class_dir);
 
         rc = security_get_classes(&classes, &nclasses);
         if (rc)