Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
[platform/kernel/linux-starfive.git] / fs / jffs2 / writev.c
1 /*
2  * JFFS2 -- Journalling Flash File System, Version 2.
3  *
4  * Copyright © 2001-2007 Red Hat, Inc.
5  *
6  * Created by David Woodhouse <dwmw2@infradead.org>
7  *
8  * For licensing information, see the file 'LICENCE' in this directory.
9  *
10  */
11
12 #include <linux/kernel.h>
13 #include <linux/mtd/mtd.h>
14 #include "nodelist.h"
15
16 int jffs2_flash_direct_writev(struct jffs2_sb_info *c, const struct kvec *vecs,
17                               unsigned long count, loff_t to, size_t *retlen)
18 {
19         if (!jffs2_is_writebuffered(c)) {
20                 if (jffs2_sum_active()) {
21                         int res;
22                         res = jffs2_sum_add_kvec(c, vecs, count, (uint32_t) to);
23                         if (res) {
24                                 return res;
25                         }
26                 }
27         }
28
29         return mtd_writev(c->mtd, vecs, count, to, retlen);
30 }
31
32 int 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;
36         ret = mtd_write(c->mtd, ofs, len, retlen, buf);
37
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 }