Re: [PATCH] mm: mlock: remove lru_add_drain_all()

[Kirill A. Shutemov]

On Wed, Oct 18, 2017 at 04:17:30PM -0700, Shakeel Butt wrote:
> Recently we have observed high latency in mlock() in our generic
> library and noticed that users have started using tmpfs files even
> without swap and the latency was due to expensive remote LRU cache
> draining.

Hm. Isn't the point of mlock() to pay price upfront and make execution
smoother after this?

With this you shift latency onto reclaim (and future memory allocation).

I'm not sure if it's a win.

-- 
 Kirill A. Shutemov