Re: [patch 3/6] mmu_notifier: invalidate_page callbacks for subsystems with rmap

[Robin Holt]

This is the second part of a patch posted to patch 1/6.


Index: git-linus/mm/rmap.c
===================================================================
--- git-linus.orig/mm/rmap.c    2008-01-30 11:55:56.000000000 -0600
+++ git-linus/mm/rmap.c 2008-01-30 12:01:28.000000000 -0600
@@ -476,8 +476,10 @@ int page_mkclean(struct page *page)
                struct address_space *mapping = page_mapping(page);
                if (mapping) {
                        ret = page_mkclean_file(mapping, page);
-                       if (unlikely(PageExternalRmap(page)))
+                       if (unlikely(PageExternalRmap(page))) {
                                mmu_rmap_notifier(invalidate_page, page);
+                               ClearPageExported(page);
+                       }
                        if (page_test_dirty(page)) {
                                page_clear_dirty(page);
                                ret = 1;
@@ -980,8 +982,10 @@ int try_to_unmap(struct page *page, int 
        else
                ret = try_to_unmap_file(page, migration);
 
-       if (unlikely(PageExternalRmap(page)))
+       if (unlikely(PageExternalRmap(page))) {
                mmu_rmap_notifier(invalidate_page, page);
+               ClearPageExported(page);
+       }
 
        if (!page_mapped(page))
                ret = SWAP_SUCCESS;
--
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