Re: [PATCH] aio: fix uncorrent dirty pages accouting when truncating AIO ring buffer

From: Andrew Morton
Date: Wed Nov 05 2014 - 16:00:25 EST


On Wed, 5 Nov 2014 09:56:20 -0500 Benjamin LaHaise <bcrl@xxxxxxxxx> wrote:

> On Wed, Nov 05, 2014 at 05:53:11PM +0800, Gu Zheng wrote:
> > ping...
>
> I need someone a bit more familiar with this area of code to chime in on
> reviewing this. Andrew, can you provide any feedback on this fix?

That looks like a sensible solution and the changelog is good. A
couple of suggested modifications:

- Don't use the term "pinned" in the changelog without explaining it
- it's a terribly ambiguous term. I assume here you mean "pinned by
elevating the page's refcount"?

- Could we have just one wee little code comment, explaining why
aio_fs_backing_dev_info exists, what function it is serving? Put
yourself in the position of a reader wondering "why is this here".
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