In my platform, there can be cache a lot of memory in
ion page pool. When shrink memory the nr_to_scan to ion
is always to little.
to_scan: 395 ion_pool_cached: 27305
Currently, the shrinker nr_deferred is set to total_scan.
But it's not the real left of the shrinker. Change it to
the freeable - freed.
Signed-off-by: Chen Feng <puck.c...@hisilicon.com>
---
mm/vmscan.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index c4a2f45..1ce3fc4 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -357,8 +357,8 @@ static unsigned long do_shrink_slab(struct shrink_control
*shrinkctl,
* manner that handles concurrent updates. If we exhausted the
* scan, there is no need to do an update.
*/
- if (total_scan > 0)
- new_nr = atomic_long_add_return(total_scan,
+ if (freeable - freed > 0)
+ new_nr = atomic_long_add_return(freeable - freed,
&shrinker->nr_deferred[nid]);
else
new_nr = atomic_long_read(&shrinker->nr_deferred[nid]);
--
1.9.1
