From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-we0-f182.google.com (mail-we0-f182.google.com [74.125.82.182]) by kanga.kvack.org (Postfix) with ESMTP id CA70C6B0036 for ; Wed, 23 Jul 2014 08:30:35 -0400 (EDT) Received: by mail-we0-f182.google.com with SMTP id k48so1110179wev.41 for ; Wed, 23 Jul 2014 05:30:35 -0700 (PDT) Received: from jenni1.inet.fi (mta-out1.inet.fi. [62.71.2.201]) by mx.google.com with ESMTP id xt4si4510077wjb.171.2014.07.23.05.30.33 for ; Wed, 23 Jul 2014 05:30:34 -0700 (PDT) Date: Wed, 23 Jul 2014 15:30:28 +0300 From: "Kirill A. Shutemov" Subject: Re: [PATCH v8 00/22] Support ext4 on NV-DIMMs Message-ID: <20140723123028.GA11355@node.dhcp.inet.fi> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org List-ID: To: Matthew Wilcox Cc: linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, willy@linux.intel.com On Tue, Jul 22, 2014 at 03:47:48PM -0400, Matthew Wilcox wrote: > One of the primary uses for NV-DIMMs is to expose them as a block device > and use a filesystem to store files on the NV-DIMM. While that works, > it currently wastes memory and CPU time buffering the files in the page > cache. We have support in ext2 for bypassing the page cache, but it > has some races which are unfixable in the current design. This series > of patches rewrite the underlying support, and add support for direct > access to ext4. Matthew, as discussed before, your patchset make exessive use of i_mmap_mutex. Are you going to address this later? Or what's the plan? -- Kirill A. Shutemov -- 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