This will be needed by targeted slab reclaim in order to ensure that a compound page allocated by SLUB will not go away under us. It also may be needed if Mel starts to implement defragmentation. The moving of compound pages may require the establishment of a reference before the use of page migration functions. Signed-off-by: Christoph Lameter --- include/linux/mm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Index: vps/include/linux/mm.h =================================================================== --- vps.orig/include/linux/mm.h 2007-06-12 19:06:28.000000000 -0700 +++ vps/include/linux/mm.h 2007-06-12 19:06:41.000000000 -0700 @@ -292,7 +292,7 @@ static inline int put_page_testzero(stru */ static inline int get_page_unless_zero(struct page *page) { - VM_BUG_ON(PageCompound(page)); + VM_BUG_ON(PageTail(page)); return atomic_inc_not_zero(&page->_count); } -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/