Save memory by using a singly-linked list for extraction aliases

[wimlib] / include / wimlib / inode.h

diff --git a/include/wimlib/inode.h b/include/wimlib/inode.h
index f9b97cf858d0054f00ec5f7d4f395c297ce28a8b..21fb9f535f232a3f4045521afe69faaba2723700 100644 (file)
--- a/include/wimlib/inode.h
+++ b/include/wimlib/inode.h
@@ -186,13 +186,13 @@ struct wim_inode {
 
                /* Fields used only during extraction  */
                struct {
-                       /* List of aliases of this dentry that are being
-                        * extracted in the current extraction operation.  This
-                        * will be a (possibly nonproper) subset of the dentries
-                        * in the i_dentry list.  This list will be constructed
+                       /* A singly linked list of aliases of this dentry that
+                        * are being extracted in the current extraction
+                        * operation.  This list may be shorter than the inode's
+                        * full alias list.  This list will be constructed
                         * regardless of whether the extraction backend supports
                         * hard links or not.  */
-                       struct list_head i_extraction_aliases;
+                       struct wim_dentry *i_first_extraction_alias;
 
                #ifdef WITH_NTFS_3G
                        /* In NTFS-3g extraction mode, this is set to the Master