Re: [PATCH] mm: vmscan: deactivate isolated pages with lru lockreleased

[KAMEZAWA Hiroyuki]

On Wed, 11 Jan 2012 20:45:07 +0800
Hillf Danton <dhillf@xxxxxxxxx> wrote:

> Spinners on other CPUs, if any, could take the lru lock and do their jobs while
> isolated pages are deactivated on the current CPU if the lock is released
> actively. And no risk of race raised as pages are already queued on locally
> private list.
> 
> 
> Signed-off-by: Hillf Danton <dhillf@xxxxxxxxx>

Doesn't this increase the number of lock/unlock ?
Hmm, isn't it better to integrate clear_active_flags to isolate_pages() ?
Then we don't need list scan.

Thanks,
-Kame

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