diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 4202e74..ca2bc54 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -2563,7 +2563,6 @@
 ssize_t cifs_user_writev(struct kiocb *iocb, struct iov_iter *from)
 {
 	struct file *file = iocb->ki_filp;
-	size_t len;
 	ssize_t total_written = 0;
 	struct cifsFileInfo *open_file;
 	struct cifs_tcon *tcon;
@@ -2579,16 +2578,10 @@
 	 * write request.
 	 */
 
-	len = iov_iter_count(from);
-	rc = generic_write_checks(file, &iocb->ki_pos, &len);
-	if (rc)
+	rc = generic_write_checks(iocb, from);
+	if (rc <= 0)
 		return rc;
 
-	if (!len)
-		return 0;
-
-	iov_iter_truncate(from, len);
-
 	INIT_LIST_HEAD(&wdata_list);
 	cifs_sb = CIFS_FILE_SB(file);
 	open_file = file->private_data;
@@ -2599,8 +2592,8 @@
 
 	memcpy(&saved_from, from, sizeof(struct iov_iter));
 
-	rc = cifs_write_from_iter(iocb->ki_pos, len, from, open_file, cifs_sb,
-				  &wdata_list);
+	rc = cifs_write_from_iter(iocb->ki_pos, iov_iter_count(from), from,
+				  open_file, cifs_sb, &wdata_list);
 
 	/*
 	 * If at least one write was successfully sent, then discard any rc
@@ -2674,7 +2667,6 @@
 	struct cifsInodeInfo *cinode = CIFS_I(inode);
 	struct TCP_Server_Info *server = tlink_tcon(cfile->tlink)->ses->server;
 	ssize_t rc;
-	size_t count;
 
 	/*
 	 * We need to hold the sem to be sure nobody modifies lock list
@@ -2683,16 +2675,10 @@
 	down_read(&cinode->lock_sem);
 	mutex_lock(&inode->i_mutex);
 
-	count = iov_iter_count(from);
-	rc = generic_write_checks(file, &iocb->ki_pos, &count);
-	if (rc)
+	rc = generic_write_checks(iocb, from);
+	if (rc <= 0)
 		goto out;
 
-	if (count == 0)
-		goto out;
-
-	iov_iter_truncate(from, count);
-
 	if (!cifs_find_lock_conflict(cfile, iocb->ki_pos, iov_iter_count(from),
 				     server->vals->exclusive_lock_type, NULL,
 				     CIFS_WRITE_OP))