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| author | David Wilder <dwilder@us.ibm.com> | 2007-06-27 14:10:03 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-06-28 11:34:54 -0700 |
| commit | 8d62fdebdaf9b866c7e236a8f5cfe90e6dba5773 (patch) | |
| tree | da32cb460417b1ff83fb11a9d5412142014b72fd /kernel | |
| parent | ea7fc3336b1d657c65daf55614d4aaadd8c1c244 (diff) | |
| download | lwn-8d62fdebdaf9b866c7e236a8f5cfe90e6dba5773.tar.gz lwn-8d62fdebdaf9b866c7e236a8f5cfe90e6dba5773.zip | |
relay file read: start-pos fix
Fix a bug in the relay read interface causing the number of consumed bytes
to be set incorrectly.
Signed-off-by: Tom Zanussi <zanussi@us.ibm.com>
Signed-off-by: David Wilder <dwilder@us.ibm.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/relay.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/relay.c b/kernel/relay.c index 4311101b0ca7..e61156ea4e25 100644 --- a/kernel/relay.c +++ b/kernel/relay.c @@ -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; |