---

yaml
---
r: 218936
b: refs/heads/master
c: 3834b12
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 57ee047b4d6bb4bcc74be0329441d1b242e57e61
+refs/heads/master: 3834b12a18d51d6c535ea52e16355d75806ffe38

trunk/fs/9p/vfs_file.c

@@ -219,7 +219,9 @@ static ssize_t
 v9fs_file_write(struct file *filp, const char __user * data,
 		size_t count, loff_t * offset)
 {
-	int n, rsize, total = 0;
+	ssize_t retval;
+	size_t total = 0;
+	int n, rsize;
 	struct p9_fid *fid;
 	struct p9_client *clnt;
 	struct inode *inode = filp->f_path.dentry->d_inode;
@@ -234,6 +236,17 @@ v9fs_file_write(struct file *filp, const char __user * data,
 
 	rsize = fid->iounit ? fid->iounit : clnt->msize - P9_IOHDRSZ;
 
+	retval = generic_write_checks(filp, &origin, &count, 0);
+	if (retval)
+		goto out;
+
+	retval = -EINVAL;
+	if ((ssize_t) count < 0)
+		goto out;
+	retval = 0;
+	if (!count)
+		goto out;
+
 	do {
 		if (count < rsize)
 			rsize = count;
@@ -258,9 +271,11 @@ v9fs_file_write(struct file *filp, const char __user * data,
 	}
 
 	if (n < 0)
-		return n;
-
-	return total;
+		retval = n;
+	else
+		retval = total;
+out:
+	return retval;
 }
 
 static int v9fs_file_fsync(struct file *filp, int datasync)