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ring-buffer: reset write field for ring_buffer_read_page

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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>
This commit is contained in:
Steven Rostedt 2009-03-02 20:56:48 -05:00
parent 633ddaa7f4
commit 41be4da4e8
1 changed files with 1 additions and 0 deletions
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kernel/trace/ring_buffer.c
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@ -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;
}