Re: [PATCHv2] perf: Fix vmalloc ring buffer free function

[Frederic Weisbecker]

2013/3/6 Jiri Olsa <jolsa@xxxxxxxxxx>:
> nope, because CONFIG_PERF_USE_VMALLOC rb uses only 1st slot
> of rg->data_pages[], so rb->nr_page is either 0 or 1
>
> the actuall number of pages is counted via rb->page_order
> (which is -1 for case with no data pages)

Ah right.
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