From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx111.postini.com [74.125.245.111]) by kanga.kvack.org (Postfix) with SMTP id B04246B0008 for ; Wed, 23 Jan 2013 16:46:45 -0500 (EST) From: Dan Magenheimer Subject: [PATCH 1/2] staging: zcache: fix ppc64 and other arches where PAGE_SIZE!=4K Date: Wed, 23 Jan 2013 13:46:30 -0800 Message-Id: <1358977591-24485-1-git-send-email-dan.magenheimer@oracle.com> Sender: owner-linux-mm@kvack.org List-ID: To: devel@linuxdriverproject.org, linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org, linux-mm@kvack.org, ngupta@vflare.org, konrad.wilk@oracle.com, sjenning@linux.vnet.ibm.com, minchan@kernel.org, dan.magenheimer@oracle.com Replace raw constant 12 with PAGE_SHIFT to fix non-x86 arches and provoke build failure if PAGE_SHIFT is too big Signed-off-by: Dan Magenheimer --- drivers/staging/zcache/zbud.c | 7 +++++-- 1 files changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/staging/zcache/zbud.c b/drivers/staging/zcache/zbud.c index a7c4361..6835fab 100644 --- a/drivers/staging/zcache/zbud.c +++ b/drivers/staging/zcache/zbud.c @@ -103,8 +103,8 @@ struct zbudpage { struct { unsigned long space_for_flags; struct { - unsigned zbud0_size:12; - unsigned zbud1_size:12; + unsigned zbud0_size: PAGE_SHIFT; + unsigned zbud1_size: PAGE_SHIFT; unsigned unevictable:2; }; struct list_head budlist; @@ -112,6 +112,9 @@ struct zbudpage { }; }; }; +#if (PAGE_SHIFT * 2) + 2 > BITS_PER_LONG +#error "zbud won't work for this arch, PAGE_SIZE is too large" +#endif struct zbudref { union { -- 1.7.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org