9p: Add datasync to client side TFSYNC/RFSYNC for dotl
SYNOPSIS
size[4] Tfsync tag[2] fid[4] datasync[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.
If datasync flag is specified data will be fleshed but does not flush
modified metadata unless that metadata is needed in order to allow a
subsequent data retrieval to be correctly handled.
Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
diff --git a/fs/9p/v9fs_vfs.h b/fs/9p/v9fs_vfs.h
index d26db19..bab0eac 100644
--- a/fs/9p/v9fs_vfs.h
+++ b/fs/9p/v9fs_vfs.h
@@ -65,5 +65,6 @@
ssize_t v9fs_file_readn(struct file *, char *, char __user *, u32, u64);
void v9fs_blank_wstat(struct p9_wstat *wstat);
int v9fs_vfs_setattr_dotl(struct dentry *, struct iattr *);
+int v9fs_file_fsync_dotl(struct file *filp, int datasync);
#define P9_LOCK_TIMEOUT (30*HZ)
diff --git a/fs/9p/vfs_dir.c b/fs/9p/vfs_dir.c
index 170f5bb..b84ebe8 100644
--- a/fs/9p/vfs_dir.c
+++ b/fs/9p/vfs_dir.c
@@ -315,4 +315,5 @@
.readdir = v9fs_dir_readdir_dotl,
.open = v9fs_file_open,
.release = v9fs_dir_release,
+ .fsync = v9fs_file_fsync_dotl,
};
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index 3a4352f..240c306 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -491,7 +491,7 @@
return retval;
}
-static int v9fs_file_fsync_dotl(struct file *filp, int datasync)
+int v9fs_file_fsync_dotl(struct file *filp, int datasync)
{
struct p9_fid *fid;
int retval;
@@ -501,7 +501,7 @@
fid = filp->private_data;
- retval = p9_client_fsync(fid);
+ retval = p9_client_fsync(fid, datasync);
return retval;
}
diff --git a/include/net/9p/client.h b/include/net/9p/client.h
index 335b088..83ba6a4 100644
--- a/include/net/9p/client.h
+++ b/include/net/9p/client.h
@@ -229,7 +229,7 @@
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_fsync(struct p9_fid *fid, int datasync);
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 e3cfdff..8df80fb 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -1165,17 +1165,18 @@
}
EXPORT_SYMBOL(p9_client_link);
-int p9_client_fsync(struct p9_fid *fid)
+int p9_client_fsync(struct p9_fid *fid, int datasync)
{
int err;
struct p9_client *clnt;
struct p9_req_t *req;
- P9_DPRINTK(P9_DEBUG_9P, ">>> TFSYNC fid %d\n", fid->fid);
+ P9_DPRINTK(P9_DEBUG_9P, ">>> TFSYNC fid %d datasync:%d\n",
+ fid->fid, datasync);
err = 0;
clnt = fid->clnt;
- req = p9_client_rpc(clnt, P9_TFSYNC, "d", fid->fid);
+ req = p9_client_rpc(clnt, P9_TFSYNC, "dd", fid->fid, datasync);
if (IS_ERR(req)) {
err = PTR_ERR(req);
goto error;