1 files changed, 14 insertions, 2 deletions

diff --git a/fs/drop_caches.c b/fs/drop_caches.c
index 9fd702f5bfb2..9280202e488c 100644
--- a/fs/drop_caches.c
+++ b/fs/drop_caches.c
@@ -59,10 +59,22 @@ int drop_caches_sysctl_handler(ctl_table *table, int write,
         if (ret)
                 return ret;
         if (write) {
-                if (sysctl_drop_caches & 1)
+                static int stfu;
+
+                if (sysctl_drop_caches & 1) {
                         iterate_supers(drop_pagecache_sb, NULL);
-                if (sysctl_drop_caches & 2)
+                        count_vm_event(DROP_PAGECACHE);
+                }
+                if (sysctl_drop_caches & 2) {
                         drop_slab();
+                        count_vm_event(DROP_SLAB);
+                }
+                if (!stfu) {
+                        pr_info("%s (%d): drop_caches: %d\n",
+                                current->comm, task_pid_nr(current),
+                                sysctl_drop_caches);
+                }
+                stfu |= sysctl_drop_caches & 4;
         }
         return 0;
 }