vmscan: change shrink_slab() interfaces by passing shrink_control
Consolidate the existing parameters to shrink_slab() into a new
shrink_control struct. This is needed later to pass the same struct to
shrinkers.
Signed-off-by: Ying Han <yinghan@google.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Acked-by: Pavel Emelyanov <xemul@openvz.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Dave Hansen <dave@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/drop_caches.c b/fs/drop_caches.c
index 98b77c8..440999c 100644
--- a/fs/drop_caches.c
+++ b/fs/drop_caches.c
@@ -40,9 +40,13 @@
static void drop_slab(void)
{
int nr_objects;
+ struct shrink_control shrink = {
+ .gfp_mask = GFP_KERNEL,
+ .nr_scanned = 1000,
+ };
do {
- nr_objects = shrink_slab(1000, GFP_KERNEL, 1000);
+ nr_objects = shrink_slab(&shrink, 1000);
} while (nr_objects > 10);
}