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 } 52