From patchwork Sat Mar 5 17:50:23 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Aneesh Kumar K.V" X-Patchwork-Id: 612791 X-Patchwork-Delegate: ericvh@gmail.com Received: from lists.sourceforge.net (lists.sourceforge.net [216.34.181.88]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id p25Hp8Jd029768 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Sat, 5 Mar 2011 17:51:38 GMT Received: from localhost ([127.0.0.1] helo=sfs-ml-4.v29.ch3.sourceforge.com) by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.74) (envelope-from ) id 1Pvvct-0006Bi-FN; Sat, 05 Mar 2011 17:50:47 +0000 Received: from sog-mx-3.v43.ch3.sourceforge.com ([172.29.43.193] helo=mx.sourceforge.net) by sfs-ml-4.v29.ch3.sourceforge.com with esmtp (Exim 4.74) (envelope-from ) id 1Pvvcs-0006BR-47 for v9fs-developer@lists.sourceforge.net; Sat, 05 Mar 2011 17:50:46 +0000 X-ACL-Warn: Received: from e23smtp06.au.ibm.com ([202.81.31.148]) by sog-mx-3.v43.ch3.sourceforge.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.74) id 1Pvvcq-0000be-KX for v9fs-developer@lists.sourceforge.net; Sat, 05 Mar 2011 17:50:46 +0000 Received: from d23relay05.au.ibm.com (d23relay05.au.ibm.com [202.81.31.247]) by e23smtp06.au.ibm.com (8.14.4/8.13.1) with ESMTP id p25HoZcC030894 for ; Sun, 6 Mar 2011 04:50:35 +1100 Received: from d23av02.au.ibm.com (d23av02.au.ibm.com [9.190.235.138]) by d23relay05.au.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id p25Hoban2072716 for ; Sun, 6 Mar 2011 04:50:37 +1100 Received: from d23av02.au.ibm.com (loopback [127.0.0.1]) by d23av02.au.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id p25HobRO017170 for ; Sun, 6 Mar 2011 04:50:37 +1100 Received: from skywalker.ibm.com ([9.124.94.223]) by d23av02.au.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id p25HoXAw016813; Sun, 6 Mar 2011 04:50:36 +1100 From: "Aneesh Kumar K.V" To: v9fs-developer@lists.sourceforge.net Date: Sat, 5 Mar 2011 23:20:23 +0530 Message-Id: <1299347425-16810-2-git-send-email-aneesh.kumar@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1299347425-16810-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> References: <1299347425-16810-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> X-Spam-Score: -0.0 (/) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain X-Headers-End: 1Pvvcq-0000be-KX Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [V9fs-developer] [PATCH 2/4] fs/9p: Open writeback fid in O_SYNC mode X-BeenThere: v9fs-developer@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: v9fs-developer-bounces@lists.sourceforge.net X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Sat, 05 Mar 2011 17:51:39 +0000 (UTC) diff --git a/fs/9p/fid.c b/fs/9p/fid.c index cd63e00..99a1a7b 100644 --- a/fs/9p/fid.c +++ b/fs/9p/fid.c @@ -286,9 +286,11 @@ static struct p9_fid *v9fs_fid_clone_with_uid(struct dentry *dentry, uid_t uid) struct p9_fid *v9fs_writeback_fid(struct dentry *dentry) { - int err; + int err, flags; struct p9_fid *fid; + struct v9fs_session_info *v9ses; + v9ses = v9fs_inode2v9ses(dentry->d_inode); fid = v9fs_fid_clone_with_uid(dentry, 0); if (IS_ERR(fid)) goto error_out; @@ -297,8 +299,17 @@ struct p9_fid *v9fs_writeback_fid(struct dentry *dentry) * dirty pages. We always request for the open fid in read-write * mode so that a partial page write which result in page * read can work. + * + * we don't have a tsyncfs operation for older version + * of protocol. So make sure the write back fid is + * opened in O_SYNC mode. */ - err = p9_client_open(fid, O_RDWR); + if (!v9fs_proto_dotl(v9ses)) + flags = O_RDWR | O_SYNC; + else + flags = O_RDWR; + + err = p9_client_open(fid, flags); if (err < 0) { p9_client_clunk(fid); fid = ERR_PTR(err);