mm: print more information about mapping in __dump_page

[linux-2.6-microblaze.git] / mm / debug.c

diff --git a/mm/debug.c b/mm/debug.c
index cdacba1..6d9aa53 100644 (file)
--- a/mm/debug.c
+++ b/mm/debug.c
@@ -44,6 +44,7 @@ const struct trace_print_flags vmaflag_names[] = {
 
 void __dump_page(struct page *page, const char *reason)
 {
+       struct address_space *mapping = page_mapping(page);
        bool page_poisoned = PagePoisoned(page);
        int mapcount;
 
@@ -70,6 +71,18 @@ void __dump_page(struct page *page, const char *reason)
        if (PageCompound(page))
                pr_cont(" compound_mapcount: %d", compound_mapcount(page));
        pr_cont("\n");
+       if (PageAnon(page))
+               pr_emerg("anon ");
+       else if (PageKsm(page))
+               pr_emerg("ksm ");
+       else if (mapping) {
+               pr_emerg("%ps ", mapping->a_ops);
+               if (mapping->host->i_dentry.first) {
+                       struct dentry *dentry;
+                       dentry = container_of(mapping->host->i_dentry.first, struct dentry, d_u.d_alias);
+                       pr_emerg("name:\"%pd\" ", dentry);
+               }
+       }
        BUILD_BUG_ON(ARRAY_SIZE(pageflag_names) != __NR_PAGEFLAGS + 1);
 
        pr_emerg("flags: %#lx(%pGp)\n", page->flags, &page->flags);