mm: document PageHuge somewhat
authorAndrew Morton <akpm@linux-foundation.org>
Mon, 8 Oct 2012 23:34:11 +0000 (16:34 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 9 Oct 2012 07:23:03 +0000 (16:23 +0900)
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>
mm/hugetlb.c

index 993f7c1820a8aba523cf24bf10d391b58ed09158..59a0059b39e27e8eb6d8dbaea784318dbde97333 100644 (file)
@@ -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;