Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760527AbXLMGj2 (ORCPT ); Thu, 13 Dec 2007 01:39:28 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758304AbXLMGhE (ORCPT ); Thu, 13 Dec 2007 01:37:04 -0500 Received: from pentafluge.infradead.org ([213.146.154.40]:56237 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758251AbXLMGg7 (ORCPT ); Thu, 13 Dec 2007 01:36:59 -0500 Date: Wed, 12 Dec 2007 22:34:17 -0800 From: Greg KH To: linux-kernel@vger.kernel.org, stable@kernel.org, Linus Torvalds Cc: Justin Forbes , Zwane Mwaikambo , "Theodore Ts'o" , Randy Dunlap , Dave Jones , Chuck Wolber , Chris Wedgwood , Michael Krufky , Chuck Ebbert , Domenico Andreoli , akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Adrian Bunk , Willy Tarreau , Hugh Dickins Subject: [patch 06/36] tmpfs: restore missing clear_highpage Message-ID: <20071213063417.GG25301@kroah.com> References: <20071213062511.265908583@mini.kroah.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline; filename="tmpfs-restore-missing-clear_highpage.patch" In-Reply-To: <20071213063308.GA25301@kroah.com> User-Agent: Mutt/1.5.16 (2007-06-09) X-Bad-Reply: References and In-Reply-To but no 'Re:' in Subject. Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1700 Lines: 56 2.6.22-stable review patch. If anyone has any objections, please let us know. ------------------ From: Hugh Dickins patch e84e2e132c9c66d8498e7710d4ea532d1feaaac5 in mainline tmpfs was misconverted to __GFP_ZERO in 2.6.11. There's an unusual case in which shmem_getpage receives the page from its caller instead of allocating. We must cover this case by clear_highpage before SetPageUptodate, as before. Signed-off-by: Hugh Dickins Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman --- mm/shmem.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) --- a/mm/shmem.c +++ b/mm/shmem.c @@ -1066,7 +1066,7 @@ shmem_alloc_page(gfp_t gfp, struct shmem pvma.vm_policy = mpol_shared_policy_lookup(&info->policy, idx); pvma.vm_pgoff = idx; pvma.vm_end = PAGE_SIZE; - page = alloc_page_vma(gfp | __GFP_ZERO, &pvma, 0); + page = alloc_page_vma(gfp, &pvma, 0); mpol_free(pvma.vm_policy); return page; } @@ -1086,7 +1086,7 @@ shmem_swapin(struct shmem_inode_info *in static inline struct page * shmem_alloc_page(gfp_t gfp,struct shmem_inode_info *info, unsigned long idx) { - return alloc_page(gfp | __GFP_ZERO); + return alloc_page(gfp); } #endif @@ -1295,6 +1295,7 @@ repeat: info->alloced++; spin_unlock(&info->lock); + clear_highpage(filepage); flush_dcache_page(filepage); SetPageUptodate(filepage); } -- -- 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/