From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751909AbcFNInp (ORCPT ); Tue, 14 Jun 2016 04:43:45 -0400 Received: from mga09.intel.com ([134.134.136.24]:53742 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751661AbcFNImp (ORCPT ); Tue, 14 Jun 2016 04:42:45 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.26,470,1459839600"; d="scan'208";a="975211215" From: "Kirill A. Shutemov" To: Linus Torvalds , Andrew Morton Cc: Rik van Riel , Mel Gorman , "Huang, Ying" , Michal Hocko , Minchan Kim , Vinayak Menon , Dave Hansen , linux-kernel@vger.kernel.org, linux-mm@kvack.org, "Kirill A. Shutemov" Subject: [PATCH 2/2] Revert "mm: disable fault around on emulated access bit architecture" Date: Tue, 14 Jun 2016 11:42:30 +0300 Message-Id: <1465893750-44080-3-git-send-email-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1465893750-44080-1-git-send-email-kirill.shutemov@linux.intel.com> References: <1465893750-44080-1-git-send-email-kirill.shutemov@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This reverts commit d0834a6c2c5b0c76cfb806bd7dba6556d8b4edbb. After revert of 5c0a85fad949 ("mm: make faultaround produce old ptes") faultaround doesn't have dependencies on hardware accessed bit, so let's revert this one too. Signed-off-by: Kirill A. Shutemov --- mm/memory.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/mm/memory.c b/mm/memory.c index 61fe7e7b56bf..cd1f29e4897e 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -2898,16 +2898,8 @@ void do_set_pte(struct vm_area_struct *vma, unsigned long address, update_mmu_cache(vma, address, pte); } -/* - * If architecture emulates "accessed" or "young" bit without HW support, - * there is no much gain with fault_around. - */ static unsigned long fault_around_bytes __read_mostly = -#ifndef __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS - PAGE_SIZE; -#else rounddown_pow_of_two(65536); -#endif #ifdef CONFIG_DEBUG_FS static int fault_around_bytes_get(void *data, u64 *val) -- 2.8.1