diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /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.c | 50 |
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 */ | ||
21 | static 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 | |||
42 | int 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 | |||