Btrfs: ulist realloc bugfix

[mirror_ubuntu-bionic-kernel.git] / fs / btrfs / ulist.h

diff --git a/fs/btrfs/ulist.h b/fs/btrfs/ulist.h
index 2e25dec58ec0e56251fbca880d27cc927aac95dc..62d2574f775a29ff6d413d59c05f7bf46c31cf7f 100644 (file)
--- a/fs/btrfs/ulist.h
+++ b/fs/btrfs/ulist.h
@@ -24,6 +24,10 @@
  */
 #define ULIST_SIZE 16
 
+struct ulist_iterator {
+       int i;
+};
+
 /*
  * element of the list
  */
@@ -63,6 +67,9 @@ struct ulist *ulist_alloc(unsigned long gfp_mask);
 void ulist_free(struct ulist *ulist);
 int ulist_add(struct ulist *ulist, u64 val, unsigned long aux,
              unsigned long gfp_mask);
-struct ulist_node *ulist_next(struct ulist *ulist, struct ulist_node *prev);
+struct ulist_node *ulist_next(struct ulist *ulist,
+                             struct ulist_iterator *uiter);
+
+#define ULIST_ITER_INIT(uiter) ((uiter)->i = 0)
 
 #endif