parse_pageframe: Fully ignore all unused pages

The pagemap data read from the file might contain only the page shift
field, nothing else. That kind of pages are really not useful, so they
can be skipped.

Signed-off-by: Timo Kokkonen <kaapeli@itanic.dy.fi>

diff --git a/parse.c b/parse.c
index 096c4ef685ad8bce81118c4f9a79995bd4fddda5..8895173a2e9f511018dd8b478d55030f6e33205b 100644 (file)
--- a/parse.c
+++ b/parse.c
@@ -185,6 +185,11 @@ static int parse_pageframe(FILE *file, struct pageframe *pf_tree,
 
                        pageframe_to_struct(pf[ret / sizeof(pf[0])], pageframe);
 
+                       /* ignore unused pages */
+                       if (!(pageframe->page_swapped ||
+                                       pageframe->page_present))
+                               continue;
+
                        if (check_parse_opts(opts, pageframe, map)) {
                                match = tree_to_pageframe(
                                        bintree_add(&pf_tree->tree,