Re: [PATCH] Fix perf_mmap fail when CONFIG_PERF_USE_VMALLOC enabled

[Peter Zijlstra]

Your $Subject needs a subsystem prefix.

On Mon, Feb 07, 2022 at 12:02:59PM -0500, Zhipeng Xie wrote:
> when CONFIG_PERF_USE_VMALLOC is enabled, rb->nr_pages is always
> equal to 1 in rb_alloc, causing perf_mmap return -EINVAL when mmap.
> Fix this problem using data_page_nr.

How can this be? This would mean that any arch that selects that hasn't
worked for forever ?! That seems unlikely.

> Signed-off-by: Zhipeng Xie <xiezhipeng1@xxxxxxxxxx>

If this is correct; this is also missing a Fixes: tag.