diff options
| author | Steven Rostedt <srostedt@redhat.com> | 2009-03-02 20:56:48 -0500 |
|---|---|---|
| committer | Steven Rostedt <srostedt@redhat.com> | 2009-03-03 20:50:54 -0500 |
| commit | 41be4da4e85e58520b934040966a6ae919c66c2d (patch) | |
| tree | 5a5b0225111a8e0c083ce9eb129f9786a335a92e | |
| parent | 633ddaa7f471e9db181f993c1458d6f4bae321ca (diff) | |
ring-buffer: reset write field for ring_buffer_read_page
Impact: fix ring_buffer_read_page
After a page is swapped into the ring buffer, the write field must
also be reset.
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
| -rw-r--r-- | kernel/trace/ring_buffer.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c index a8c275c01e8..9baad7ee4b3 100644 --- a/kernel/trace/ring_buffer.c +++ b/kernel/trace/ring_buffer.c @@ -2492,6 +2492,7 @@ int ring_buffer_read_page(struct ring_buffer *buffer, rb_init_page(bpage); bpage = cpu_buffer->reader_page->page; cpu_buffer->reader_page->page = *data_page; + local_set(&cpu_buffer->reader_page->write, 0); cpu_buffer->reader_page->read = 0; *data_page = bpage; } |