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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/jffs2/writev.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'fs/jffs2/writev.c')
-rw-r--r--fs/jffs2/writev.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/fs/jffs2/writev.c b/fs/jffs2/writev.c
new file mode 100644
index 000000000000..f079f8388566
--- /dev/null
+++ b/fs/jffs2/writev.c
@@ -0,0 +1,50 @@
1/*
2 * JFFS2 -- Journalling Flash File System, Version 2.
3 *
4 * Copyright (C) 2001, 2002 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 * $Id: writev.c,v 1.6 2004/11/16 20:36:12 dwmw2 Exp $
11 *
12 */
13
14#include <linux/kernel.h>
15#include <linux/mtd/mtd.h>
16#include "nodelist.h"
17
18/* This ought to be in core MTD code. All registered MTD devices
19 without writev should have this put in place. Bug the MTD
20 maintainer */
21static inline int mtd_fake_writev(struct mtd_info *mtd, const struct kvec *vecs,
22 unsigned long count, loff_t to, size_t *retlen)
23{
24 unsigned long i;
25 size_t totlen = 0, thislen;
26 int ret = 0;
27
28 for (i=0; i<count; i++) {
29 if (!vecs[i].iov_len)
30 continue;
31 ret = mtd->write(mtd, to, vecs[i].iov_len, &thislen, vecs[i].iov_base);
32 totlen += thislen;
33 if (ret || thislen != vecs[i].iov_len)
34 break;
35 to += vecs[i].iov_len;
36 }
37 if (retlen)
38 *retlen = totlen;
39 return ret;
40}
41
42int jffs2_flash_direct_writev(struct jffs2_sb_info *c, const struct kvec *vecs,
43 unsigned long count, loff_t to, size_t *retlen)
44{
45 if (c->mtd->writev)
46 return c->mtd->writev(c->mtd, vecs, count, to, retlen);
47 else
48 return mtd_fake_writev(c->mtd, vecs, count, to, retlen);
49}
50