On Mon, 28 Mar 2011 16:51:09 -0700
Ying Han [off-list ref] wrote:

In the global background reclaim, we do soft reclaim before scanning the
per-zone LRU. However, the return value is ignored.

We would like to skip shrink_zone() if soft_limit reclaim does enough work.
Also, we need to make the memory pressure balanced across per-memcg zones,
like the logic vm-core. This patch is the first step where we start with
counting the nr_scanned and nr_reclaimed from soft_limit reclaim into the
global scan_control.

Change log v2...v1:
1. Not skipping the shrink_zone() but instead count the nr_scanned and
nr_reclaimed in the global scan_control.
2. Removed the stats into the next patch.

Signed-off-by: Ying Han <redacted>

seems better.

Acked-by: KAMEZAWA Hiroyuki <redacted>

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