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Subject[patch 1/6] mm: comment rmap
1/6

Just be clear that VM_RESERVED pages here are a bug, and the test
is not there because they are expected.

Signed-off-by: Nick Piggin <npiggin@suse.de>

Index: linux-2.6/mm/rmap.c
===================================================================
--- linux-2.6.orig/mm/rmap.c
+++ linux-2.6/mm/rmap.c
@@ -532,6 +532,8 @@ static int try_to_unmap_one(struct page
* If the page is mlock()d, we cannot swap it out.
* If it's recently referenced (perhaps page_referenced
* skipped over this mm) then we should reactivate it.
+ *
+ * Pages belonging to VM_RESERVED regions should not happen here.
*/
if ((vma->vm_flags & (VM_LOCKED|VM_RESERVED)) ||
ptep_clear_flush_young(vma, address, pte)) {
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