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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/jffs2/writev.c | |
download | blackbird-op-linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz blackbird-op-linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip |
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 @@ +/* + * JFFS2 -- Journalling Flash File System, Version 2. + * + * Copyright (C) 2001, 2002 Red Hat, Inc. + * + * Created by David Woodhouse <dwmw2@infradead.org> + * + * For licensing information, see the file 'LICENCE' in this directory. + * + * $Id: writev.c,v 1.6 2004/11/16 20:36:12 dwmw2 Exp $ + * + */ + +#include <linux/kernel.h> +#include <linux/mtd/mtd.h> +#include "nodelist.h" + +/* This ought to be in core MTD code. All registered MTD devices + without writev should have this put in place. Bug the MTD + maintainer */ +static inline int mtd_fake_writev(struct mtd_info *mtd, const struct kvec *vecs, + unsigned long count, loff_t to, size_t *retlen) +{ + unsigned long i; + size_t totlen = 0, thislen; + int ret = 0; + + for (i=0; i<count; i++) { + if (!vecs[i].iov_len) + continue; + ret = mtd->write(mtd, to, vecs[i].iov_len, &thislen, vecs[i].iov_base); + totlen += thislen; + if (ret || thislen != vecs[i].iov_len) + break; + to += vecs[i].iov_len; + } + if (retlen) + *retlen = totlen; + return ret; +} + +int jffs2_flash_direct_writev(struct jffs2_sb_info *c, const struct kvec *vecs, + unsigned long count, loff_t to, size_t *retlen) +{ + if (c->mtd->writev) + return c->mtd->writev(c->mtd, vecs, count, to, retlen); + else + return mtd_fake_writev(c->mtd, vecs, count, to, retlen); +} + |