writev.c
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/*
* 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;
}