Re: [PATCH V2] block: call bio_uninit in bio_endio

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On 07/10/2017 12:40 PM, Shaohua Li wrote:
> bio_free isn't a good place to free cgroup info. There are a
> lot of cases bio is allocated in special way (for example, in stack) and
> never gets called by bio_put hence bio_free, we are leaking memory. This
> patch moves the free to bio endio, which should be called anyway. The
> bio_uninit call in bio_free is kept, in case the bio never gets called
> bio endio.
> 
> This assumes ->bi_end_io() doesn't access cgroup info, which seems true
> in my audit.
> 
> This along with Christoph's integrity patch should fix the memory leak
> issue.

Applied, thanks Shaohua.

-- 
Jens Axboe




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