From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Venkateswararao Jujjuri (JV)" Subject: [PATCH 2/2] [9p] Introduce client side TFSYNC/RFSYNC for dotl. Date: Fri, 24 Sep 2010 18:04:28 -0700 Message-ID: <1285376668-2234-2-git-send-email-jvrao@linux.vnet.ibm.com> References: <1285376668-2234-1-git-send-email-jvrao@linux.vnet.ibm.com> Cc: linux-fsdevel@vger.kernel.org, "Venkateswararao Jujjuri (JV)" To: v9fs-developer@lists.sourceforge.net Return-path: Received: from e33.co.us.ibm.com ([32.97.110.151]:39233 "EHLO e33.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754625Ab0IYAtg (ORCPT ); Fri, 24 Sep 2010 20:49:36 -0400 Received: from d03relay02.boulder.ibm.com (d03relay02.boulder.ibm.com [9.17.195.227]) by e33.co.us.ibm.com (8.14.4/8.13.1) with ESMTP id o8P0iRfq019845 for ; Fri, 24 Sep 2010 18:44:27 -0600 Received: from d03av02.boulder.ibm.com (d03av02.boulder.ibm.com [9.17.195.168]) by d03relay02.boulder.ibm.com (8.13.8/8.13.8/NCO v9.1) with ESMTP id o8P0nZXB057286 for ; Fri, 24 Sep 2010 18:49:35 -0600 Received: from d03av02.boulder.ibm.com (loopback [127.0.0.1]) by d03av02.boulder.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id o8P0nYOd002423 for ; Fri, 24 Sep 2010 18:49:35 -0600 In-Reply-To: <1285376668-2234-1-git-send-email-jvrao@linux.vnet.ibm.com> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: SYNOPSIS size[4] Tfsync tag[2] fid[4] size[4] Rfsync tag[2] DESCRIPTION The Tfsync transaction transfers ("flushes") all modified in-core data of file identified by fid to the disk device (or other permanent storage device) where that file resides. Signed-off-by: Venkateswararao Jujjuri --- fs/9p/vfs_file.c | 18 ++++++++++++++++-- include/net/9p/9p.h | 2 ++ include/net/9p/client.h | 1 + net/9p/client.c | 25 +++++++++++++++++++++++++ 4 files changed, 44 insertions(+), 2 deletions(-) diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index 28db7fb..fdf3032 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -290,6 +290,20 @@ static int v9fs_file_fsync(struct file *filp, int datasync) return retval; } +static int v9fs_file_fsync_dotl(struct file *filp, int datasync) +{ + struct p9_fid *fid; + int retval; + + P9_DPRINTK(P9_DEBUG_VFS, "v9fs_file_fsync_dotl: filp %p datasync %x\n", + filp, datasync); + + fid = filp->private_data; + + retval = p9_client_fsync(fid); + return retval; +} + static const struct file_operations v9fs_cached_file_operations = { .llseek = generic_file_llseek, .read = do_sync_read, @@ -311,7 +325,7 @@ static const struct file_operations v9fs_cached_file_operations_dotl = { .release = v9fs_dir_release, .lock = v9fs_file_lock, .mmap = generic_file_readonly_mmap, - .fsync = v9fs_file_fsync, + .fsync = v9fs_file_fsync_dotl, }; const struct file_operations v9fs_file_operations = { @@ -333,5 +347,5 @@ const struct file_operations v9fs_file_operations_dotl = { .release = v9fs_dir_release, .lock = v9fs_file_lock, .mmap = generic_file_readonly_mmap, - .fsync = v9fs_file_fsync, + .fsync = v9fs_file_fsync_dotl, }; diff --git a/include/net/9p/9p.h b/include/net/9p/9p.h index a4a1b04..55e9605 100644 --- a/include/net/9p/9p.h +++ b/include/net/9p/9p.h @@ -163,6 +163,8 @@ enum p9_msg_t { P9_RXATTRCREATE, P9_TREADDIR = 40, P9_RREADDIR, + P9_TFSYNC = 50, + P9_RFSYNC, P9_TLINK = 70, P9_RLINK, P9_TMKDIR = 72, diff --git a/include/net/9p/client.h b/include/net/9p/client.h index d1aa2cf..fbb23b4 100644 --- a/include/net/9p/client.h +++ b/include/net/9p/client.h @@ -232,6 +232,7 @@ int p9_client_symlink(struct p9_fid *fid, char *name, char *symname, gid_t gid, int p9_client_create_dotl(struct p9_fid *ofid, char *name, u32 flags, u32 mode, gid_t gid, struct p9_qid *qid); int p9_client_clunk(struct p9_fid *fid); +int p9_client_fsync(struct p9_fid *fid); int p9_client_remove(struct p9_fid *fid); int p9_client_read(struct p9_fid *fid, char *data, char __user *udata, u64 offset, u32 count); diff --git a/net/9p/client.c b/net/9p/client.c index 208efce..124241b 100644 --- a/net/9p/client.c +++ b/net/9p/client.c @@ -1211,6 +1211,31 @@ int p9_client_link(struct p9_fid *dfid, struct p9_fid *oldfid, char *newname) } EXPORT_SYMBOL(p9_client_link); +int p9_client_fsync(struct p9_fid *fid) +{ + int err; + struct p9_client *clnt; + struct p9_req_t *req; + + P9_DPRINTK(P9_DEBUG_9P, ">>> TFSYNC fid %d\n", fid->fid); + err = 0; + clnt = fid->clnt; + + req = p9_client_rpc(clnt, P9_TFSYNC, "d", fid->fid); + if (IS_ERR(req)) { + err = PTR_ERR(req); + goto error; + } + + P9_DPRINTK(P9_DEBUG_9P, "<<< RFSYNC fid %d\n", fid->fid); + + p9_free_req(clnt, req); + +error: + return err; +} +EXPORT_SYMBOL(p9_client_fsync); + int p9_client_clunk(struct p9_fid *fid) { int err; -- 1.6.5.2