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UBIFS: remove unnecessary stack variable

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This is patch removes an unnecessary 'offs' variable from 'ubifs_wbuf_write_nolock()'
- we can just keep 'wbuf->offs' up-to-date instead. This patch is very minor
the only motivation for it was that it is cleaner to keep wbuf->offs up-to-date
by the time we call 'ubifs_leb_write()'.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
This commit is contained in:
Artem Bityutskiy 2011-05-14 17:37:47 +03:00
parent 7703f09ded
commit 12f338914e
1 changed files with 8 additions and 9 deletions
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17
fs/ubifs/io.c
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@ -573,7 +573,7 @@ out_timers:
int ubifs_wbuf_write_nolock(struct ubifs_wbuf *wbuf, void *buf, int len)
{
struct ubifs_info *c = wbuf->c;
int err, written, n, aligned_len = ALIGN(len, 8), offs;
int err, written, n, aligned_len = ALIGN(len, 8);
dbg_io("%d bytes (%s) to jhead %s wbuf at LEB %d:%d", len,
dbg_ntype(((struct ubifs_ch *)buf)->node_type),
@ -636,7 +636,6 @@ int ubifs_wbuf_write_nolock(struct ubifs_wbuf *wbuf, void *buf, int len)
goto exit;
}
offs = wbuf->offs;
written = 0;
if (wbuf->used) {
@ -653,7 +652,7 @@ int ubifs_wbuf_write_nolock(struct ubifs_wbuf *wbuf, void *buf, int len)
if (err)
goto out;
offs += wbuf->size;
wbuf->offs += wbuf->size;
len -= wbuf->avail;
aligned_len -= wbuf->avail;
written += wbuf->avail;
@ -672,7 +671,7 @@ int ubifs_wbuf_write_nolock(struct ubifs_wbuf *wbuf, void *buf, int len)
if (err)
goto out;
offs += wbuf->size;
wbuf->offs += wbuf->size;
len -= wbuf->size;
aligned_len -= wbuf->size;
written += wbuf->size;
@ -687,12 +686,13 @@ int ubifs_wbuf_write_nolock(struct ubifs_wbuf *wbuf, void *buf, int len)
n = aligned_len >> c->max_write_shift;
if (n) {
n <<= c->max_write_shift;
dbg_io("write %d bytes to LEB %d:%d", n, wbuf->lnum, offs);
err = ubi_leb_write(c->ubi, wbuf->lnum, buf + written, offs, n,
wbuf->dtype);
dbg_io("write %d bytes to LEB %d:%d", n, wbuf->lnum,
wbuf->offs);
err = ubi_leb_write(c->ubi, wbuf->lnum, buf + written,
wbuf->offs, n, wbuf->dtype);
if (err)
goto out;
offs += n;
wbuf->offs += n;
aligned_len -= n;
len -= n;
written += n;
@ -707,7 +707,6 @@ int ubifs_wbuf_write_nolock(struct ubifs_wbuf *wbuf, void *buf, int len)
*/
memcpy(wbuf->buf, buf + written, len);
wbuf->offs = offs;
if (c->leb_size - wbuf->offs >= c->max_write_size)
wbuf->size = c->max_write_size;
else