From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f51.google.com (mail-pa0-f51.google.com [209.85.220.51]) by kanga.kvack.org (Postfix) with ESMTP id E2ED082F6B for ; Mon, 5 Oct 2015 16:33:03 -0400 (EDT) Received: by pacfv12 with SMTP id fv12so190187494pac.2 for ; Mon, 05 Oct 2015 13:33:03 -0700 (PDT) Received: from mga11.intel.com (mga11.intel.com. [192.55.52.93]) by mx.google.com with ESMTP id yn6si42788136pab.112.2015.10.05.13.33.03 for ; Mon, 05 Oct 2015 13:33:03 -0700 (PDT) From: Ross Zwisler Subject: [PATCH v3 0/3] Revert locking changes in DAX for v4.3 Date: Mon, 5 Oct 2015 14:32:51 -0600 Message-Id: <1444077174-22016-1-git-send-email-ross.zwisler@linux.intel.com> Sender: owner-linux-mm@kvack.org List-ID: To: linux-kernel@vger.kernel.org Cc: Ross Zwisler , Alexander Viro , Matthew Wilcox , linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, Andrew Morton , Dan Williams , Dave Chinner , Jan Kara , "Kirill A. Shutemov" , linux-nvdimm@lists.01.org This series reverts some recent changes to the locking scheme in DAX introduced by these two commits: commit 843172978bb9 ("dax: fix race between simultaneous faults") commit 46c043ede471 ("mm: take i_mmap_lock in unmap_mapping_range() for DAX") It also temporarily disables the newly added DAX PMD fault path because of a deadlock. We are re-working the way that DAX does its locking for v4.4, so for now just disable DAX PMD faults and fall back to PAGE_SIZE faults to make sure we don't hit this deadlock. Changes from v2: - Temporarily disable the DAX PMD fault path while we re-work DAX locking for v4.4. Ross Zwisler (3): Revert "mm: take i_mmap_lock in unmap_mapping_range() for DAX" Revert "dax: fix race between simultaneous faults" dax: temporarily disable DAX PMD fault path fs/dax.c | 90 ++++++++++++++++++++++++++++--------------------------------- mm/memory.c | 2 ++ 2 files changed, 43 insertions(+), 49 deletions(-) -- 2.1.0 -- 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