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-rw-r--r--fs/drop_caches.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/drop_caches.c b/fs/drop_caches.c
index e619c31b6bd9..b9575957a7c2 100644
--- a/fs/drop_caches.c
+++ b/fs/drop_caches.c
@@ -10,6 +10,7 @@
#include <linux/writeback.h>
#include <linux/sysctl.h>
#include <linux/gfp.h>
+#include <linux/swap.h>
#include "internal.h"
/* A global variable is a bit ugly, but it keeps the code simple */
@@ -59,6 +60,7 @@ int drop_caches_sysctl_handler(struct ctl_table *table, int write,
static int stfu;
if (sysctl_drop_caches & 1) {
+ lru_add_drain_all();
iterate_supers(drop_pagecache_sb, NULL);
count_vm_event(DROP_PAGECACHE);
}