mm: document PageHuge somewhat

Acked-by: David Rientjes <rientjes@google.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mariux64 · Oct 9, 2012 · 7795912 · 7795912
1 parent 45ec169
commit 7795912
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
@@ -671,6 +671,11 @@ static void prep_compound_gigantic_page(struct page *page, unsigned long order)
 	}
 }
 
+/*
+ * PageHuge() only returns true for hugetlbfs pages, but not for normal or
+ * transparent huge pages.  See the PageTransHuge() documentation for more
+ * details.
+ */
 int PageHuge(struct page *page)
 {
 	compound_page_dtor *dtor;