1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * JFFS2 -- Journalling Flash File System, Version 2.
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * Copyright © 2001-2007 Red Hat, Inc.
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * Created by David Woodhouse <dwmw2@infradead.org>
7*4882a593Smuzhiyun *
8*4882a593Smuzhiyun * For licensing information, see the file 'LICENCE' in this directory.
9*4882a593Smuzhiyun *
10*4882a593Smuzhiyun */
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #include <linux/kernel.h>
13*4882a593Smuzhiyun #include <linux/mtd/mtd.h>
14*4882a593Smuzhiyun #include "nodelist.h"
15*4882a593Smuzhiyun
jffs2_flash_direct_writev(struct jffs2_sb_info * c,const struct kvec * vecs,unsigned long count,loff_t to,size_t * retlen)16*4882a593Smuzhiyun int jffs2_flash_direct_writev(struct jffs2_sb_info *c, const struct kvec *vecs,
17*4882a593Smuzhiyun unsigned long count, loff_t to, size_t *retlen)
18*4882a593Smuzhiyun {
19*4882a593Smuzhiyun if (!jffs2_is_writebuffered(c)) {
20*4882a593Smuzhiyun if (jffs2_sum_active()) {
21*4882a593Smuzhiyun int res;
22*4882a593Smuzhiyun res = jffs2_sum_add_kvec(c, vecs, count, (uint32_t) to);
23*4882a593Smuzhiyun if (res) {
24*4882a593Smuzhiyun return res;
25*4882a593Smuzhiyun }
26*4882a593Smuzhiyun }
27*4882a593Smuzhiyun }
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun return mtd_writev(c->mtd, vecs, count, to, retlen);
30*4882a593Smuzhiyun }
31*4882a593Smuzhiyun
jffs2_flash_direct_write(struct jffs2_sb_info * c,loff_t ofs,size_t len,size_t * retlen,const u_char * buf)32*4882a593Smuzhiyun int jffs2_flash_direct_write(struct jffs2_sb_info *c, loff_t ofs, size_t len,
33*4882a593Smuzhiyun size_t *retlen, const u_char *buf)
34*4882a593Smuzhiyun {
35*4882a593Smuzhiyun int ret;
36*4882a593Smuzhiyun ret = mtd_write(c->mtd, ofs, len, retlen, buf);
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun if (jffs2_sum_active()) {
39*4882a593Smuzhiyun struct kvec vecs[1];
40*4882a593Smuzhiyun int res;
41*4882a593Smuzhiyun
42*4882a593Smuzhiyun vecs[0].iov_base = (unsigned char *) buf;
43*4882a593Smuzhiyun vecs[0].iov_len = len;
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun res = jffs2_sum_add_kvec(c, vecs, 1, (uint32_t) ofs);
46*4882a593Smuzhiyun if (res) {
47*4882a593Smuzhiyun return res;
48*4882a593Smuzhiyun }
49*4882a593Smuzhiyun }
50*4882a593Smuzhiyun return ret;
51*4882a593Smuzhiyun }
52