Re: [patch 02/11] mm: vmscan: distinguish global reclaim fromglobal LRU scanning

[KAMEZAWA Hiroyuki]

On Mon, 12 Sep 2011 12:57:19 +0200
Johannes Weiner <jweiner@xxxxxxxxxx> wrote:

> The traditional zone reclaim code is scanning the per-zone LRU lists
> during direct reclaim and kswapd, and the per-zone per-memory cgroup
> LRU lists when reclaiming on behalf of a memory cgroup limit.
> 
> Subsequent patches will convert the traditional reclaim code to
> reclaim exclusively from the per-memory cgroup LRU lists.  As a
> result, using the predicate for which LRU list is scanned will no
> longer be appropriate to tell global reclaim from limit reclaim.
> 
> This patch adds a global_reclaim() predicate to tell direct/kswapd
> reclaim from memory cgroup limit reclaim and substitutes it in all
> places where currently scanning_global_lru() is used for that.
> 
> Signed-off-by: Johannes Weiner <jweiner@xxxxxxxxxx>

Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>

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