From: "Darrick J. Wong" Subject: [PATCH 3/4] 9pfs: Fix filesystem to wait for stable page writeback Date: Thu, 13 Dec 2012 00:08:02 -0800 Message-ID: <20121213080802.23360.4487.stgit@blackbox.djwong.org> References: <20121213080740.23360.16346.stgit@blackbox.djwong.org> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Cc: martin.petersen@oracle.com, neilb@suse.de, david@fromorbit.com, Zheng Liu , linux-kernel@vger.kernel.org, hch@infradead.org, linux-fsdevel@vger.kernel.org, adilger.kernel@dilger.ca, bharrosh@panasas.com, jlayton@samba.org, v9fs-developer@lists.sourceforge.net, linux-ext4@vger.kernel.org To: axboe@kernel.dk, lucho@ionkov.net, jack@suse.cz, "Darrick J. Wong" , ericvh@gmail.com, viro@zeniv.linux.org.uk, rminnich@sandia.gov, tytso@mit.edu Return-path: Received: from aserp1040.oracle.com ([141.146.126.69]:48300 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751143Ab2LMIJd (ORCPT ); Thu, 13 Dec 2012 03:09:33 -0500 In-Reply-To: <20121213080740.23360.16346.stgit@blackbox.djwong.org> Sender: linux-ext4-owner@vger.kernel.org List-ID: Fix up the ->page_mkwrite handler to provide stable page writes if necessary. Signed-off-by: Darrick J. Wong --- fs/9p/vfs_file.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index c2483e9..357260b 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -620,6 +620,7 @@ v9fs_vm_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) lock_page(page); if (page->mapping != inode->i_mapping) goto out_unlock; + wait_for_stable_page(page); return VM_FAULT_LOCKED; out_unlock: