From mboxrd@z Thu Jan 1 00:00:00 1970 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> 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 To: linux-kernel@vger.kernel.org Return-path: Sender: owner-linux-mm@kvack.org List-Id: linux-fsdevel.vger.kernel.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