mm: thp: __get_page_tail_foll() can use get_huge_page_tail()

Cleanup. Change __get_page_tail_foll() to use get_huge_page_tail() to avoid the code duplication. Signed-off-by: Oleg Nesterov <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Dave Jones <[email protected]> Cc: Darren Hart <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Mel Gorman <[email protected]> Acked-by: Andrea Arcangeli <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
mrcsosa · Jan 22, 2014 · c728852 · c728852
1 parent 9b7ac26
commit c728852
Showing 1 changed file with 1 addition and 4 deletions.
diff --git a/mm/internal.h b/mm/internal.h
@@ -47,12 +47,9 @@ static inline void __get_page_tail_foll(struct page *page,
 	 * page_cache_get_speculative()) on tail pages.
 	 */
 	VM_BUG_ON(atomic_read(&page->first_page->_count) <= 0);
-	VM_BUG_ON(atomic_read(&page->_count) != 0);
-	VM_BUG_ON(page_mapcount(page) < 0);
 	if (get_page_head)
 		atomic_inc(&page->first_page->_count);
-	if (compound_tail_refcounted(page->first_page))
-		atomic_inc(&page->_mapcount);
+	get_huge_page_tail(page);
 }
 
 /*