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relay file read: start-pos fix

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Fix a bug in the relay read interface causing the number of consumed bytes
to be set incorrectly.

Signed-off-by: Tom Zanussi <[email protected]>
Signed-off-by: David Wilder <[email protected]>
Cc: Masami Hiramatsu <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
David Wilder authored and Linus Torvalds committed 2007-06-28 11:34:54 -07:00
1 parent ea7fc3336b
commit 8d62fdebda
1 file changed
+3
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kernel/relay.c
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@@ -899,7 +899,10 @@ static size_t relay_file_read_start_pos(size_t read_pos,
size_t read_subbuf, padding, padding_start, padding_end;
size_t subbuf_size = buf->chan->subbuf_size;
size_t n_subbufs = buf->chan->n_subbufs;
size_t consumed = buf->subbufs_consumed % n_subbufs;
if (!read_pos)
read_pos = consumed * subbuf_size + buf->bytes_consumed;
read_subbuf = read_pos / subbuf_size;
padding = buf->padding[read_subbuf];
padding_start = (read_subbuf + 1) * subbuf_size - padding;