From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:56489 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932682AbcJTPxp (ORCPT ); Thu, 20 Oct 2016 11:53:45 -0400 Subject: Patch "ext4: allow DAX writeback for hole punch" has been added to the 4.7-stable tree To: ross.zwisler@linux.intel.com, gregkh@linuxfoundation.org, jack@suse.cz, tytso@mit.edu Cc: , From: Date: Thu, 20 Oct 2016 17:53:34 +0200 Message-ID: <147697881430224@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled ext4: allow DAX writeback for hole punch to the 4.7-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: ext4-allow-dax-writeback-for-hole-punch.patch and it can be found in the queue-4.7 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From cca32b7eeb4ea24fa6596650e06279ad9130af98 Mon Sep 17 00:00:00 2001 From: Ross Zwisler Date: Thu, 22 Sep 2016 11:49:38 -0400 Subject: ext4: allow DAX writeback for hole punch From: Ross Zwisler commit cca32b7eeb4ea24fa6596650e06279ad9130af98 upstream. Currently when doing a DAX hole punch with ext4 we fail to do a writeback. This is because the logic around filemap_write_and_wait_range() in ext4_punch_hole() only looks for dirty page cache pages in the radix tree, not for dirty DAX exceptional entries. Signed-off-by: Ross Zwisler Reviewed-by: Jan Kara Signed-off-by: Theodore Ts'o Signed-off-by: Greg Kroah-Hartman --- fs/ext4/inode.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3892,7 +3892,7 @@ int ext4_update_disksize_before_punch(st } /* - * ext4_punch_hole: punches a hole in a file by releaseing the blocks + * ext4_punch_hole: punches a hole in a file by releasing the blocks * associated with the given offset and length * * @inode: File inode @@ -3921,7 +3921,7 @@ int ext4_punch_hole(struct inode *inode, * Write out all dirty pages to avoid race conditions * Then release them. */ - if (mapping->nrpages && mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) { + if (mapping_tagged(mapping, PAGECACHE_TAG_DIRTY)) { ret = filemap_write_and_wait_range(mapping, offset, offset + length - 1); if (ret) Patches currently in stable-queue which might be from ross.zwisler@linux.intel.com are queue-4.7/ext4-allow-dax-writeback-for-hole-punch.patch