From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932789AbcAaMKx (ORCPT ); Sun, 31 Jan 2016 07:10:53 -0500 Received: from mga11.intel.com ([192.55.52.93]:53321 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757335AbcAaMJu (ORCPT ); Sun, 31 Jan 2016 07:09:50 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.22,374,1449561600"; d="scan'208";a="905182782" From: Matthew Wilcox To: Andrew Morton Cc: Matthew Wilcox , linux-mm@kvack.org, linux-nvdimm@ml01.01.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, x86@kernel.org Subject: [PATCH v4 8/8] ext4: Support for PUD-sized transparent huge pages Date: Sun, 31 Jan 2016 23:09:35 +1100 Message-Id: <1454242175-16870-9-git-send-email-matthew.r.wilcox@intel.com> X-Mailer: git-send-email 2.7.0.rc3 In-Reply-To: <1454242175-16870-1-git-send-email-matthew.r.wilcox@intel.com> References: <1454242175-16870-1-git-send-email-matthew.r.wilcox@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Matthew Wilcox ext4 needs to reserve enough space in the journal to allocate a PUD-sized page. Signed-off-by: Matthew Wilcox --- fs/ext4/file.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 71859ed..ec6664a 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -211,6 +211,10 @@ static int ext4_dax_fault(struct vm_area_struct *vma, struct vm_fault *vmf) nblocks = ext4_chunk_trans_blocks(inode, PMD_SIZE / PAGE_SIZE); break; + case FAULT_FLAG_SIZE_PUD: + nblocks = ext4_chunk_trans_blocks(inode, + PUD_SIZE / PAGE_SIZE); + break; default: return VM_FAULT_FALLBACK; } -- 2.7.0.rc3