From mboxrd@z Thu Jan 1 00:00:00 1970 From: akpm@linux-foundation.org Subject: + mm-softdirty-clear-vm_softdirty-flag-inside-clear_refs_write-instead-of-clear_soft_dirty.patch added to -mm tree Date: Mon, 14 Apr 2014 15:28:35 -0700 Message-ID: <534c6113.IdlRctJMGkNXph/n%akpm@linux-foundation.org> Reply-To: linux-kernel@vger.kernel.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Return-path: Received: from mail.linuxfoundation.org ([140.211.169.12]:52689 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755763AbaDNW2g (ORCPT ); Mon, 14 Apr 2014 18:28:36 -0400 Sender: mm-commits-owner@vger.kernel.org List-Id: mm-commits@vger.kernel.org To: mm-commits@vger.kernel.org, xemul@parallels.com, hughd@google.com, gorcunov@openvz.org Subject: + mm-softdirty-clear-vm_softdirty-flag-inside-clear_refs_write-instead-of-clear_soft_dirty.patch added to -mm tree To: gorcunov@openvz.org,hughd@google.com,xemul@parallels.com From: akpm@linux-foundation.org Date: Mon, 14 Apr 2014 15:28:35 -0700 The patch titled Subject: mm: softdirty: clear VM_SOFTDIRTY flag inside clear_refs_write() instead of clear_soft_dirty() has been added to the -mm tree. Its filename is mm-softdirty-clear-vm_softdirty-flag-inside-clear_refs_write-instead-of-clear_soft_dirty.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/mm-softdirty-clear-vm_softdirty-flag-inside-clear_refs_write-instead-of-clear_soft_dirty.patch and later at http://ozlabs.org/~akpm/mmotm/broken-out/mm-softdirty-clear-vm_softdirty-flag-inside-clear_refs_write-instead-of-clear_soft_dirty.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Cyrill Gorcunov Subject: mm: softdirty: clear VM_SOFTDIRTY flag inside clear_refs_write() instead of clear_soft_dirty() clear_refs_write() is called earlier than clear_soft_dirty() and it is more natural to clear VM_SOFTDIRTY (which belongs to VMA entry but not PTEs) that early instead of clearing it a way deeper inside call chain. Signed-off-by: Cyrill Gorcunov Cc: Pavel Emelyanov Cc: Hugh Dickins Signed-off-by: Andrew Morton --- fs/proc/task_mmu.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff -puN fs/proc/task_mmu.c~mm-softdirty-clear-vm_softdirty-flag-inside-clear_refs_write-instead-of-clear_soft_dirty fs/proc/task_mmu.c --- a/fs/proc/task_mmu.c~mm-softdirty-clear-vm_softdirty-flag-inside-clear_refs_write-instead-of-clear_soft_dirty +++ a/fs/proc/task_mmu.c @@ -737,9 +737,6 @@ static inline void clear_soft_dirty(stru ptent = pte_file_clear_soft_dirty(ptent); } - if (vma->vm_flags & VM_SOFTDIRTY) - vma->vm_flags &= ~VM_SOFTDIRTY;