Re: [PATCH 5/8] thp, mm: locking tail page is a bug

[Dave Hansen]

On 07/17/2013 02:09 PM, Andrew Morton wrote:
> lock_page() is a pretty commonly called function, and I assume quite a
> lot of people run with CONFIG_DEBUG_VM=y.
> 
> Is the overhead added by this patch really worthwhile?

I always thought of it as a developer-only thing.  I don't think any of
the big distros turn it on by default.
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