[PATCH 0/2] mm/vmscan: calculate reclaimed slab in all reclaim paths

[Yafang Shao <laoar.shao@gmail.com>]

This patchset is to fix the issues in doing shrink slab.

There're six different reclaim paths by now,
- kswapd reclaim path
- node reclaim path
- hibernate preallocate memory reclaim path
- direct reclaim path
- memcg reclaim path
- memcg softlimit reclaim path

The slab caches reclaimed in these paths are only calculated in the above
three paths.
The issues are detailed explained in patch #2.
We should calculate the reclaimed slab caches in every reclaim path.
In order to do it, the struct reclaim_state is placed into the
struct shrink_control.

In node reclaim path, there'is another issue about shrinking slab,
which is adressed in another patch[1].


[1] mm/vmscan: shrink slab in node reclaim
https://lore.kernel.org/linux-mm/1559874946-22960-1-git-send-email-laoar.shao@gmail.com/

Yafang Shao (2):
  mm/vmscan: add a new member reclaim_state in struct shrink_control
  mm/vmscan: calculate reclaimed slab caches in all reclaim paths

 mm/vmscan.c | 27 +++++++++++++++------------
 1 file changed, 15 insertions(+), 12 deletions(-)

-- 
1.8.3.1