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1dbebd3256
This patch makes the 'mtd_writev()' function more usable and logical. We first teach it to fall-back to the 'default_mtd_writev()' function if the MTD driver does not define its own '->writev()' method. Then we make block2mtd and JFFS2 just 'mtd_writev()' instead of 'default_mtd_writev()' function. This means we can now stop exporting 'default_mtd_writev()' and instead, export 'mtd_writev()'. This is much cleaner and more logical, as well as allows us to get read of another direct 'mtd->writev' access in JFFS2. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
52 lines
1.1 KiB
C
52 lines
1.1 KiB
C
/*
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* JFFS2 -- Journalling Flash File System, Version 2.
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*
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* Copyright © 2001-2007 Red Hat, Inc.
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*
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* Created by David Woodhouse <dwmw2@infradead.org>
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*
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* For licensing information, see the file 'LICENCE' in this directory.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/mtd/mtd.h>
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#include "nodelist.h"
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int jffs2_flash_direct_writev(struct jffs2_sb_info *c, const struct kvec *vecs,
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unsigned long count, loff_t to, size_t *retlen)
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{
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if (!jffs2_is_writebuffered(c)) {
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if (jffs2_sum_active()) {
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int res;
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res = jffs2_sum_add_kvec(c, vecs, count, (uint32_t) to);
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if (res) {
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return res;
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}
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}
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}
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return mtd_writev(c->mtd, vecs, count, to, retlen);
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}
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int jffs2_flash_direct_write(struct jffs2_sb_info *c, loff_t ofs, size_t len,
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size_t *retlen, const u_char *buf)
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{
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int ret;
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ret = mtd_write(c->mtd, ofs, len, retlen, buf);
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if (jffs2_sum_active()) {
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struct kvec vecs[1];
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int res;
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vecs[0].iov_base = (unsigned char *) buf;
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vecs[0].iov_len = len;
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res = jffs2_sum_add_kvec(c, vecs, 1, (uint32_t) ofs);
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if (res) {
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return res;
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}
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}
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return ret;
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}
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