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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * JFFS2 -- Journalling Flash File System, Version 2.
3 *
David Woodhousec00c3102007-04-25 14:16:47 +01004 * Copyright © 2001-2007 Red Hat, Inc.
Linus Torvalds1da177e2005-04-16 15:20:36 -07005 *
6 * Created by David Woodhouse <dwmw2@infradead.org>
7 *
8 * For licensing information, see the file 'LICENCE' in this directory.
9 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070010 */
11
12#include <linux/kernel.h>
13#include <linux/mtd/mtd.h>
14#include "nodelist.h"
15
Linus Torvalds1da177e2005-04-16 15:20:36 -070016int jffs2_flash_direct_writev(struct jffs2_sb_info *c, const struct kvec *vecs,
17 unsigned long count, loff_t to, size_t *retlen)
18{
Ferenc Havasi8acff5e2005-09-09 16:12:01 +010019 if (!jffs2_is_writebuffered(c)) {
Ferenc Havasie631ddba2005-09-07 09:35:26 +010020 if (jffs2_sum_active()) {
21 int res;
Ferenc Havasie631ddba2005-09-07 09:35:26 +010022 res = jffs2_sum_add_kvec(c, vecs, count, (uint32_t) to);
23 if (res) {
24 return res;
25 }
26 }
Ferenc Havasi8acff5e2005-09-09 16:12:01 +010027 }
Ferenc Havasie631ddba2005-09-07 09:35:26 +010028
Artem Bityutskiy1dbebd32011-12-30 16:23:41 +020029 return mtd_writev(c->mtd, vecs, count, to, retlen);
Linus Torvalds1da177e2005-04-16 15:20:36 -070030}
31
Ferenc Havasie631ddba2005-09-07 09:35:26 +010032int jffs2_flash_direct_write(struct jffs2_sb_info *c, loff_t ofs, size_t len,
33 size_t *retlen, const u_char *buf)
34{
35 int ret;
Artem Bityutskiyeda95cb2011-12-23 17:35:41 +020036 ret = mtd_write(c->mtd, ofs, len, retlen, buf);
Ferenc Havasie631ddba2005-09-07 09:35:26 +010037
38 if (jffs2_sum_active()) {
39 struct kvec vecs[1];
40 int res;
41
42 vecs[0].iov_base = (unsigned char *) buf;
43 vecs[0].iov_len = len;
44
45 res = jffs2_sum_add_kvec(c, vecs, 1, (uint32_t) ofs);
46 if (res) {
47 return res;
48 }
49 }
50 return ret;
51}