From patchwork Sat Feb 5 17:46:39 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: 534061 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 p15Hlhpb021373 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Sat, 5 Feb 2011 17:48:04 GMT Received: from localhost ([127.0.0.1] helo=sfs-ml-1.v29.ch3.sourceforge.com) by sfs-ml-1.v29.ch3.sourceforge.com with esmtp (Exim 4.74) (envelope-from ) id 1PlmEI-0004Uy-RR; Sat, 05 Feb 2011 17:47:26 +0000 Received: from sog-mx-1.v43.ch3.sourceforge.com ([172.29.43.191] helo=mx.sourceforge.net) by sfs-ml-1.v29.ch3.sourceforge.com with esmtp (Exim 4.74) (envelope-from ) id 1PlmEG-0004Up-Pv for v9fs-developer@lists.sourceforge.net; Sat, 05 Feb 2011 17:47:24 +0000 X-ACL-Warn: Received: from e28smtp02.in.ibm.com ([122.248.162.2]) by sog-mx-1.v43.ch3.sourceforge.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.74) id 1PlmEF-0000hR-Fc for v9fs-developer@lists.sourceforge.net; Sat, 05 Feb 2011 17:47:24 +0000 Received: from d28relay05.in.ibm.com (d28relay05.in.ibm.com [9.184.220.62]) by e28smtp02.in.ibm.com (8.14.4/8.13.1) with ESMTP id p15HlERB019312 for ; Sat, 5 Feb 2011 23:17:14 +0530 Received: from d28av03.in.ibm.com (d28av03.in.ibm.com [9.184.220.65]) by d28relay05.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id p15HlEBl2314468 for ; Sat, 5 Feb 2011 23:17:14 +0530 Received: from d28av03.in.ibm.com (loopback [127.0.0.1]) by d28av03.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id p15HlDJT015154 for ; Sun, 6 Feb 2011 04:47:14 +1100 Received: from skywalker.ibm.com ([9.124.88.193]) by d28av03.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id p15HknSc014456; Sun, 6 Feb 2011 04:47:12 +1100 From: "Aneesh Kumar K.V" To: v9fs-developer@lists.sourceforge.net Date: Sat, 5 Feb 2011 23:16:39 +0530 Message-Id: <1296928005-9529-12-git-send-email-aneesh.kumar@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1296928005-9529-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com> References: <1296928005-9529-1-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: 1PlmEF-0000hR-Fc Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [V9fs-developer] [RFC PATCH -V2 11/17] fs/9p: Implement syncfs call back for 9Pfs 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 Feb 2011 17:48:04 +0000 (UTC) diff --git a/fs/9p/v9fs.h b/fs/9p/v9fs.h index c4b5d88..41f29b9 100644 --- a/fs/9p/v9fs.h +++ b/fs/9p/v9fs.h @@ -109,6 +109,7 @@ struct v9fs_session_info { struct list_head slist; /* list of sessions registered with v9fs */ struct backing_dev_info bdi; struct rw_semaphore rename_sem; + struct p9_fid *root_fid; /* Used for file system sync */ }; struct p9_fid *v9fs_session_init(struct v9fs_session_info *, const char *, diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c index 76e11e8..fde5fe2 100644 --- a/fs/9p/vfs_super.c +++ b/fs/9p/vfs_super.c @@ -152,7 +152,6 @@ static struct dentry *v9fs_mount(struct file_system_type *fs_type, int flags, retval = PTR_ERR(inode); goto release_sb; } - root = d_alloc_root(inode); if (!root) { iput(inode); @@ -188,6 +187,13 @@ static struct dentry *v9fs_mount(struct file_system_type *fs_type, int flags, if (retval) goto release_sb; v9fs_fid_add(root, fid); + /* + * Add the root fid to session info. This is used + * for file system sync. We want a cloned fid here + * so that we can do a sync_filesystem after a + * shrink_dcache_for_umount + */ + v9ses->root_fid = v9fs_fid_clone(root); P9_DPRINTK(P9_DEBUG_VFS, " simple set mount, return 0\n"); return dget(sb->s_root); @@ -224,7 +230,7 @@ static void v9fs_kill_super(struct super_block *s) P9_DPRINTK(P9_DEBUG_VFS, " %p\n", s); kill_anon_super(s); - + p9_client_clunk(v9ses->root_fid); v9fs_session_cancel(v9ses); v9fs_session_close(v9ses); kfree(v9ses); @@ -277,6 +283,14 @@ done: return res; } +static int v9fs_sync_fs(struct super_block *sb, int wait) +{ + struct v9fs_session_info *v9ses = sb->s_fs_info; + + P9_DPRINTK(P9_DEBUG_VFS, "v9fs_sync_fs: super_block %p\n", sb); + return p9_client_sync_fs(v9ses->root_fid); +} + static const struct super_operations v9fs_super_ops = { #ifdef CONFIG_9P_FSCACHE .alloc_inode = v9fs_alloc_inode, @@ -293,6 +307,7 @@ static const struct super_operations v9fs_super_ops_dotl = { .alloc_inode = v9fs_alloc_inode, .destroy_inode = v9fs_destroy_inode, #endif + .sync_fs = v9fs_sync_fs, .statfs = v9fs_statfs, .evict_inode = v9fs_evict_inode, .show_options = generic_show_options,