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@xxxxxxxxxxxxxxxxxx>
---
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
--
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