1 files changed, 50 insertions, 0 deletions

diff --git a/fs/jffs2/writev.c b/fs/jffs2/writev.c
new file mode 100644
index 000000000000..f079f8388566
--- /dev/null
+++ b/fs/jffs2/writev.c
@@ -0,0 +1,50 @@
+/*
+ * JFFS2 -- Journalling Flash File System, Version 2.
+ *
+ * Copyright (C) 2001, 2002 Red Hat, Inc.
+ *
+ * Created by David Woodhouse <dwmw2@infradead.org>
+ *
+ * For licensing information, see the file 'LICENCE' in this directory.
+ *
+ * $Id: writev.c,v 1.6 2004/11/16 20:36:12 dwmw2 Exp $
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/mtd/mtd.h>
+#include "nodelist.h"
+
+/* This ought to be in core MTD code. All registered MTD devices
+   without writev should have this put in place. Bug the MTD
+   maintainer */
+static inline int mtd_fake_writev(struct mtd_info *mtd, const struct kvec *vecs,
+                                  unsigned long count, loff_t to, size_t *retlen)
+{
+        unsigned long i;
+        size_t totlen = 0, thislen;
+        int ret = 0;
+
+        for (i=0; i<count; i++) {
+                if (!vecs[i].iov_len)
+                        continue;
+                ret = mtd->write(mtd, to, vecs[i].iov_len, &thislen, vecs[i].iov_base);
+                totlen += thislen;
+                if (ret || thislen != vecs[i].iov_len)
+                        break;
+                to += vecs[i].iov_len;
+        }
+        if (retlen)
+                *retlen = totlen;
+        return ret;
+}
+
+int jffs2_flash_direct_writev(struct jffs2_sb_info *c, const struct kvec *vecs,
+                              unsigned long count, loff_t to, size_t *retlen)
+{
+        if (c->mtd->writev)
+                return c->mtd->writev(c->mtd, vecs, count, to, retlen);
+        else
+                return mtd_fake_writev(c->mtd, vecs, count, to, retlen);
+}
+