SLUB uses compound pages for larger slabs. We need to increment the page count of these pages in order to make sure that they are not freed under us because of other operations on the slab that may independently remove the objects. [This patch is already in mm] Reviewed-by: Rik van Riel Signed-off-by: Christoph Lameter --- include/linux/mm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Index: linux-2.6.23-mm1/include/linux/mm.h =================================================================== --- linux-2.6.23-mm1.orig/include/linux/mm.h 2007-10-12 18:15:57.000000000 -0700 +++ linux-2.6.23-mm1/include/linux/mm.h 2007-10-12 18:17:30.000000000 -0700 @@ -227,7 +227,7 @@ 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/