Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / fs / jffs2 / writev.c

diff --git a/kernel/fs/jffs2/writev.c b/kernel/fs/jffs2/writev.c
new file mode 100644 (file)
index 0000000..a1bda9d
--- /dev/null
+++ b/kernel/fs/jffs2/writev.c
@@ -0,0 +1,51 @@
+/*
+ * JFFS2 -- Journalling Flash File System, Version 2.
+ *
+ * Copyright © 2001-2007 Red Hat, Inc.
+ *
+ * Created by David Woodhouse <dwmw2@infradead.org>
+ *
+ * For licensing information, see the file 'LICENCE' in this directory.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/mtd/mtd.h>
+#include "nodelist.h"
+
+int jffs2_flash_direct_writev(struct jffs2_sb_info *c, const struct kvec *vecs,
+                             unsigned long count, loff_t to, size_t *retlen)
+{
+       if (!jffs2_is_writebuffered(c)) {
+               if (jffs2_sum_active()) {
+                       int res;
+                       res = jffs2_sum_add_kvec(c, vecs, count, (uint32_t) to);
+                       if (res) {
+                               return res;
+                       }
+               }
+       }
+
+       return mtd_writev(c->mtd, vecs, count, to, retlen);
+}
+
+int jffs2_flash_direct_write(struct jffs2_sb_info *c, loff_t ofs, size_t len,
+                       size_t *retlen, const u_char *buf)
+{
+       int ret;
+       ret = mtd_write(c->mtd, ofs, len, retlen, buf);
+
+       if (jffs2_sum_active()) {
+               struct kvec vecs[1];
+               int res;
+
+               vecs[0].iov_base = (unsigned char *) buf;
+               vecs[0].iov_len = len;
+
+               res = jffs2_sum_add_kvec(c, vecs, 1, (uint32_t) ofs);
+               if (res) {
+                       return res;
+               }
+       }
+       return ret;
+}