[9p] Introduce client side TFSYNC/RFSYNC for dotl.

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 <jvrao@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

2 files changed, 3 insertions, 0 deletions

diff --git a/include/net/9p/9p.h b/include/net/9p/9p.h
index a4a1b043a8c4..55e96057f47f 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 7f63d5ab7b44..8744e3ad4a07 100644
--- a/include/net/9p/client.h
+++ b/include/net/9p/client.h
@@ -229,6 +229,7 @@ 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);